General EnglishGeneral Awareness, Current Affairs & J&K UT Special ReferenceBasic Mathematics, Quantitative Aptitude & ReasoningComputer Science, Operating Systems & Digital ElectronicsAudio-Visual Systems, Television, Electronics & Electrical Engineering
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JKSSB — Audio Visual Mechanic (2025)
Official Examination Solved Question Booklet
Total Questions: 120Maximum Marks: 120Time Allowed: 120 Minutes
Spot the error in the following sentence: (A) Some people say that (B) her husband is in the jail (C) and so she lives alone. (D) No error.
💡Correct Answer: Option B (her husband is in the jail)
Part (B) contains an error. Institutional nouns like prison, jail, school, hospital, and church do not take the definite article 'the' when visited or inhabited for their primary purpose ('in jail' as a prisoner). Choice B.
Q2
General EnglishDeterminers & Error Spotting
Spot the error in the following sentence: (A) The police should exercise (B) their authority with little (C) bit of sensitivity and humanity. (D) No error.
💡Correct Answer: Option B (their authority with little)
Part (B/C) is erroneous because 'little' without an article means almost none (negative), whereas the context demands positive sensitivity: it should be 'with a little bit of sensitivity' or 'with some sensitivity'. Choice B.
Q3
General EnglishSentence Structure
What is a sentence with one principal clause and one or more subordinate clauses called?
💡Correct Answer: Option D (Complex sentence)
A Complex Sentence consists of exactly one independent (principal) clause and at least one dependent (subordinate) clause joined by a subordinating conjunction.
Q4
General EnglishSubject-Verb Agreement
Fill in the blank: "Each of the students ________ done their exams well."
💡Correct Answer: Option B (has)
The distributive pronoun 'Each' is grammatically singular and requires a singular verb: 'Each of the students has done...'. Choice B.
Q5
General EnglishPronouns & Determiners
Fill in the blanks: "________ of the witnesses were present in the court."
💡Correct Answer: Option B (None)
When referring to 'not any' among three or more plural persons (witnesses) followed by a plural verb 'were', 'None' ('None of the witnesses were present...') is standard English. Choice B.
Q6
General EnglishHomophones & Spelling
Fill in the blanks: "They forgot to take ________ printouts."
💡Correct Answer: Option B (their)
The possessive adjective indicating belonging to them is 'their' ('their printouts').
Q7
General EnglishVocabulary & Homophones
Fill in the blanks: "I'd appreciate it if you could be ________ about this; we're keeping it quiet until the details are finalised."
💡Correct Answer: Option D (discreet)
'Discreet' means careful, prudent, and circumspect in speech to avoid revealing secrets. ('Discrete' means separate or distinct). Choice D.
Q8
General EnglishPrepositions of Time
Spot the error in the sentence: (A) I have not seen him since twenty years (B) and so I cannot say with certainty (C) whether he is alive or dead. (D) No error
💡Correct Answer: Option A (I have not seen him since twenty years)
Part (A) contains an error. 'Since' is used for a specific point in time, while 'for' is used for a duration or period of time ('for twenty years', not 'since twenty years'). Choice A.
Q9
General EnglishTenses
Fill in the blanks: "This road ________ to the hospital."
💡Correct Answer: Option A (leads)
Permanent geographical routes, directions, and universal facts take the Simple Present tense in the singular: 'This road leads to the hospital.' Choice A.
Q10
General EnglishPunctuation Rules
Choose the most appropriate option that has the correct punctuation marks:
💡Correct Answer: Option C (I came, I saw, I conquered.)
The famous Latin tricolon veni, vidi, vici is standardly punctuated in English with separating commas between short parallel coordinate clauses: 'I came, I saw, I conquered.' Choice C.
Q11
General EnglishPunctuation Rules
Choose the most appropriate option that has the correct punctuation marks:
💡Correct Answer: Option B (Please bring some fruits, green vegetables and some bowls.)
Items in a simple coordinate list are separated by commas without a semicolon or premature comma after the verb: 'Please bring some fruits, green vegetables and some bowls.' Choice B.
Q12
General EnglishSynonyms
Out of the four alternatives, choose the one which best expresses the meaning of the given word: LATENT
💡Correct Answer: Option C (Hidden)
'Latent' means present but existing in a dormant, concealed, or undeveloped state, which is synonymous with 'Hidden'.
Q13
General EnglishSynonyms
Out of the four alternatives, choose the one which best expresses the meaning of the given word: CONSIDERATE
💡Correct Answer: Option D (Thoughtful)
'Considerate' means showing careful regard, empathy, and respect for the feelings and needs of other people, meaning 'Thoughtful'.
Q14
General EnglishAntonyms
Choose the word opposite in meaning to the given word: LIBERTY
💡Correct Answer: Option B (Slavery)
'Liberty' means the state of being free from oppressive restrictions or bondage. Its direct antonym is 'Slavery' (the state of being enslaved).
Q15
General EnglishAnalogies
Complete the analogy: Bird : Nest ::
💡Correct Answer: Option B (Beaver: Dam)
Relationship of animal to its self-constructed home/dwelling: A Bird builds a Nest to live in; a Beaver builds a Dam/lodge to inhabit. Choice B.
Q16
General EnglishAnalogies
Complete the analogy: Book : Cover :: Painting : ?
💡Correct Answer: Option C (Frame)
A Cover borders, encloses, and protects a Book; similarly, a Frame borders, encloses, and displays a Painting. Choice C.
Q17
General EnglishAnalogies
Complete the analogy: Huge : Immense as Small : ?
💡Correct Answer: Option B (Tiny)
Huge and Immense are direct synonyms; similarly, Small and Tiny are direct synonyms. Choice B.
Q18
General EnglishIdioms & Phrases
Choose the alternative which best expresses the meaning of the idiom: "To doctor the accounts"
💡Correct Answer: Option D (to manipulate the accounts)
The idiom 'to doctor the accounts' means to falsify, tamper with, or deceptively manipulate financial accounts or records.
Q19
General EnglishIdioms & Phrases
Choose the alternative which best expresses the meaning of the idiom: "To keep the pot boiling"
💡Correct Answer: Option A (to maintain interest)
The idiom 'to keep the pot boiling' means to maintain interest or lively activity, or to earn just enough money to secure a livelihood.
Q20
General EnglishPrepositions
Choose the correct preposition: "Fate smiles ________ those who untiringly grapple with stark realities of life."
💡Correct Answer: Option B (on)
The figurative idiom is 'fate/fortune smiles on (or upon) someone' (meaning to bestow good fortune or favor). Choice B.
Q21
General EnglishPrepositions (Beside vs Besides)
Choose the correct preposition: "________ a doctor, he is an actor."
💡Correct Answer: Option B (Besides)
'Besides' means in addition to or as well as ('In addition to being a doctor, he is an actor'). 'Beside' means by the side of.
Q22
General EnglishError Spotting
Spot the error in the sentence: (A) He took (B) leave of (C) four days (D) No error.
💡Correct Answer: Option B (leave of)
Part (B) contains an error. The correct English idiom for taking casual absence is 'took four days' leave' or 'took leave for four days' (not 'leave of four days'). Choice B.
Q23
General Awareness, Current Affairs & J&K UT Special ReferenceIndian Science & Defense History
In which year did India conduct its second series of nuclear tests at Pokhran (Operation Shakti)?
💡Correct Answer: Option C (1998)
India conducted the Pokhran-II nuclear tests (five nuclear detonations under Operation Shakti) on 11 and 13 May 1998 in Rajasthan under Prime Minister Atal Bihari Vajpayee.
Q24
General Awareness, Current Affairs & J&K UT Special ReferenceModern Indian History
The historic Battle of Plassey took place in which year?
💡Correct Answer: Option B (1757 AD)
The Battle of Plassey was fought on 23 June 1757 between the British East India Company under Robert Clive and Siraj-ud-Daulah, Nawab of Bengal.
Q25
General Awareness, Current Affairs & J&K UT Special ReferenceNobel Laureates
Who was the first black woman to receive the Nobel Prize in Literature?
💡Correct Answer: Option D (Toni Morrison)
American novelist Toni Morrison became the first black woman to win the Nobel Prize in Literature in 1993, celebrated for visionary novels such as Beloved and Song of Solomon.
Q26
General Awareness, Current Affairs & J&K UT Special ReferenceIndian Banking History
Who among the following was the first Indian Governor of the Reserve Bank of India (RBI)?
💡Correct Answer: Option A (CD Deshmukh)
Sir Chintaman Dwarakanath Deshmukh (C.D. Deshmukh) was appointed as the first Indian Governor of the Reserve Bank of India on 11 August 1943 (Sir Osborne Smith was the first British governor).
Q27
General Awareness, Current Affairs & J&K UT Special ReferenceIndian Media & Heritage
Which among the following options is the only daily newspaper published in the Sanskrit language in India?
💡Correct Answer: Option C (Sudharma)
Sudharma is the world's only daily newspaper published in the Sanskrit language, founded in 1970 by Kalale Nadadur Varadaraja Iyengar in Mysuru, Karnataka.
Q28
General Awareness, Current Affairs & J&K UT Special ReferenceBooks & Authors
Which of the following books is authored by Arundhati Roy?
💡Correct Answer: Option D (The Ministry of Utmost Happiness)
'The Ministry of Utmost Happiness' (2017) is a celebrated novel by Booker Prize winner Arundhati Roy. (A Suitable Boy is by Vikram Seth; Sea of Poppies is by Amitav Ghosh; Fasting, Feasting is by Anita Desai).
Q29
General Awareness, Current Affairs & J&K UT Special ReferenceIndian Constitution (8th Schedule)
The Eighth Schedule of the Constitution of India lists ________ languages as officially recognized by the Government of India:
💡Correct Answer: Option D (22)
The Eighth Schedule of the Indian Constitution currently lists 22 officially recognized languages (originally 14, expanded via the 21st, 71st, and 92nd Constitutional Amendments).
Q30
General Awareness, Current Affairs & J&K UT Special ReferenceWorld Capitals
The capital of Syria is:
💡Correct Answer: Option A (Damascus)
Damascus is the capital and historical city of Syria. (Dushanbe is capital of Tajikistan; Kyiv is capital of Ukraine).
Q31
General Awareness, Current Affairs & J&K UT Special ReferenceInternational Organizations
Where is the global headquarters of the United Nations (UN) located?
💡Correct Answer: Option B (New York City, USA)
The international headquarters of the United Nations is situated in the Turtle Bay neighborhood of Manhattan in New York City, USA.
Q32
General Awareness, Current Affairs & J&K UT Special ReferenceUN Security Council
Which of the following countries holds permanent Veto Power in the UN Security Council (UNSC)?
💡Correct Answer: Option C (China)
The five permanent members (P5) of the UN Security Council with veto power are China, France, Russia, the United Kingdom, and the United States.
Q33
General Awareness, Current Affairs & J&K UT Special ReferenceImportant Days & SAARC
The SAARC Charter Day is observed every year on:
💡Correct Answer: Option B (December 8)
The SAARC Charter Day is celebrated annually on 8 December to commemorate the adoption of the SAARC Charter in Dhaka on 8 December 1985.
Q34
General Awareness, Current Affairs & J&K UT Special ReferenceWorld Heritage Sites
Which ASEAN country is famous for the historic Hindu-Buddhist temple complex of Angkor Wat?
💡Correct Answer: Option D (Cambodia)
Angkor Wat, the largest religious monument in the world built in the 12th century by Khmer King Suryavarman II, is located in Siem Reap, Cambodia.
Q35
General Awareness, Current Affairs & J&K UT Special ReferenceGeneral Science (Inert Gases in Bulbs)
The gas usually filled in incandescent electric bulbs which is chemically inactive and prevents the tungsten filament from oxidizing and evaporating is: I. Hydrogen II. Nitrogen Which of the following is correct?
💡Correct Answer: Option B (Only II is correct)
Incandescent light bulbs are filled with an inert chemical gas mixture of Nitrogen and Argon to prevent oxidation and retard thermal evaporation of the tungsten filament. Hydrogen is combustible and never used. Correct: Only II is correct (Choice B).
Q36
General Awareness, Current Affairs & J&K UT Special ReferenceAwards & Honors
The prestigious Golden Peacock Global Award is conferred for outstanding excellence in which of the following fields?
💡Correct Answer: Option C (Corporate Governance)
The Golden Peacock Awards (instituted by the Institute of Directors - IOD in 1991) are globally recognized benchmark awards for excellence in Corporate Governance, sustainability, and quality management.
Q37
General Awareness, Current Affairs & J&K UT Special ReferenceLiterary Awards of India
________ is India's oldest and highest literary award, established in 1961 by the Bharatiya Jnanpith trust:
💡Correct Answer: Option D (Jnanpith Award)
The Jnanpith Award (instituted in 1961) is India's oldest and highest literary honor, presented annually to an Indian author for outstanding contribution to Indian literature.
Q38
General Awareness, Current Affairs & J&K UT Special ReferenceSports History
The Commonwealth Games (originally called the British Empire Games) started from which country in 1930?
💡Correct Answer: Option C (Canada)
The inaugural Commonwealth Games were held in Hamilton, Ontario, Canada in August 1930.
Q39
General Awareness, Current Affairs & J&K UT Special ReferenceAgricultural Practices
Rearing of silkworms for the commercial production of raw silk fibre is known as:
💡Correct Answer: Option B (Sericulture)
Sericulture is the commercial rearing of silkworms (especially Bombyx mori) for the production of raw silk fibre. (Apiculture is beekeeping; Floriculture is flower farming).
Q40
General Awareness, Current Affairs & J&K UT Special ReferenceEnvironmental Current Affairs
The State Level Monitoring Committee (SLMC) of which state has recommended the time-bound implementation of projects to check the illegal discharge of biowaste into the Ramsar-designated Ashtamudi Lake?
💡Correct Answer: Option D (Kerala)
Ashtamudi Lake is a prominent Ramsar wetland estuary situated in the Kollam district of Kerala.
Q41
General Awareness, Current Affairs & J&K UT Special ReferenceSports Tournaments
Which country won the Men's Under-19 Cricket Asia Cup 2024 (or 2023/2024 edition held in UAE)?
💡Correct Answer: Option C (Bangladesh)
Bangladesh won the Men's Under-19 Asia Cup in the UAE, defeating UAE in the final to lift their maiden title. Choice C.
Q42
General Awareness, Current Affairs & J&K UT Special ReferenceState Legislation Current Affairs
Which Indian state has legally banned the consumption and sale of beef in public places, including restaurants and community events?
💡Correct Answer: Option C (Assam)
Under the Assam Cattle Preservation Act, 2021 (and subsequent administrative notifications), Assam prohibited the consumption and sale of beef in public spaces, restaurants, hotels, and non-notified areas.
Q43
General Awareness, Current Affairs & J&K UT Special ReferenceEconomics & Econometrics
Econometrics is concerned with which of the following aspects? (A) Empirical support to economic theory (B) Quantitative analysis of economic data (C) Use of tools of mathematics and statistical inference (D) All of the above
💡Correct Answer: Option D (All of the above)
Econometrics is the quantitative application of statistical methods and mathematical economic models to empirical data to test economic theories ⟹ All of the above. Choice D.
Q44
General Awareness, Current Affairs & J&K UT Special ReferenceInternational Trade Economics
The Terms of Trade (TOT) of a country are said to be favorable when the prices of its exports are ________ relatively to the prices of its imports:
💡Correct Answer: Option A (High)
Terms of Trade is defined as the ratio of export prices to import prices (TOT=PmPx×100). It is favorable when export prices are relatively High compared to import prices.
Q45
General Awareness, Current Affairs & J&K UT Special ReferenceMacroeconomics (Deflation)
A persistent and sustained fall in the general price level of goods and services in an economy is known as:
💡Correct Answer: Option D (Deflation)
Deflation is a sustained decrease in the general price level of goods and services, occurring when the inflation rate falls below 0% (negative inflation).
Q46
General Awareness, Current Affairs & J&K UT Special ReferenceMedieval History of Kashmir
Who was the founder of the famous Lohara dynasty of Kashmir (1003–1320 CE)?
💡Correct Answer: Option A (Sangram Raj)
The Lohara dynasty was founded by King Sangramaraja (Sangram Raj) in 1003 CE, who was the nephew of Queen Didda of the Utpala/Lohara royal lineage.
Q47
General Awareness, Current Affairs & J&K UT Special ReferenceRivers and Dams of J&K
The Uri Hydroelectric Dam is constructed on which river in Jammu & Kashmir?
💡Correct Answer: Option D (Jhelum)
The Uri-I and Uri-II Hydroelectric Power Stations (generating 480 MW and 240 MW) are built on the Jhelum River in the Baramulla district of Jammu & Kashmir.
Q48
General Awareness, Current Affairs & J&K UT Special ReferenceDogra Dynastic History
Who was the last ruling Maharaja of the princely state of Jammu & Kashmir?
💡Correct Answer: Option C (Hari Singh)
Maharaja Hari Singh (reigned 1925–1949/1952) was the last ruling Dogra monarch of the princely state of Jammu and Kashmir, who signed the Instrument of Accession on 26 October 1947.
Q49
General Awareness, Current Affairs & J&K UT Special ReferenceDistricts of Ladakh
Which of the following districts come under the Union Territory of Ladakh after the Jammu and Kashmir Reorganisation Act, 2019?
💡Correct Answer: Option C (Kargil and Leh)
Under the Jammu and Kashmir Reorganisation Act, 2019, the Union Territory of Ladakh comprises exactly two districts: Kargil and Leh.
Q50
General Awareness, Current Affairs & J&K UT Special ReferenceWildlife Sanctuaries of J&K
In which year was the Overa-Aru Wildlife Sanctuary in Jammu and Kashmir formally established?
💡Correct Answer: Option B (1981)
The Overa-Aru Wildlife Sanctuary (covering 500 sq km in the Lidder Valley near Pahalgam, Anantnag) was formally established and notified in the year 1981.
Q51
General Awareness, Current Affairs & J&K UT Special ReferenceRivers of J&K (Kishanganga)
The Neelum River in the Kashmir region is also known in India as the:
💡Correct Answer: Option B (Kishanganga)
The river known as Kishanganga in Jammu & Kashmir flows into Pakistan-administered Kashmir where it is called the Neelum River before joining the Jhelum River at Muzaffarabad.
Q52
General Awareness, Current Affairs & J&K UT Special ReferenceConstitutional History (Article 370)
Which article of the Indian Constitution ensured the special asymmetric status of Jammu and Kashmir prior to August 2019?
💡Correct Answer: Option A (Article 370)
Article 370 of the Indian Constitution conferred temporary special status on Jammu and Kashmir from 1949 until its effective abrogation on 5 August 2019.
Q53
General Awareness, Current Affairs & J&K UT Special ReferenceIndus Waters Treaty 1960
Under the Indus Waters Treaty of 1960, which of the following is NOT considered as one of the Eastern Rivers assigned exclusively to India?
💡Correct Answer: Option B (Chenab)
Under the Indus Waters Treaty (1960), the three Eastern Rivers allocated to India are the Ravi, Beas, and Sutlej. The three Western Rivers allocated to Pakistan are the Indus, Jhelum, and Chenab. Choice B.
If a number is divided by 15, it leaves a remainder of 7. If thrice the number is divided by 5, then what is the remainder?
💡Correct Answer: Option A (1)
Let number N=15k+7. Thrice the number is 3N=3(15k+7)=45k+21. Dividing by 5: 45k is divisible by 5, and 21÷5 leaves remainder 1 (21=5×4+1). The remainder is 1. Choice A.
If the price of a commodity is increased by 50%, by what fraction must its consumption be reduced so as to keep the same expenditure on its consumption?
💡Correct Answer: Option B (1/3)
Reduction in consumption fraction =100+rr=100+5050=15050=31. Choice B.
Ajit has a certain average for 9 innings. In the tenth innings, he scores 100 runs thereby increasing his average by 8 runs. His new average is:
💡Correct Answer: Option C (28)
Let original average be A. Total runs in 10 innings =9A+100=10(A+8)⟹9A+100=10A+80⟹A=20. New average =A+8=20+8=28 runs. Choice C.
Q57
Basic Mathematics, Quantitative Aptitude & ReasoningProfit and Loss Comparison
In terms of percentage profit, which among the following is the best transaction? (A) CP = 36, Profit = 17 (B) CP = 50, Profit = 24 (C) CP = 40, Profit = 19 (D) CP = 60, Profit = 29
💡Correct Answer: Option D (CP = 60, Profit = 29)
Compute percentage profits: (A) 3617×100=47.22%; (B) 5024×100=48.00%; (C) 4019×100=47.50%; (D) 6029×100=48.33%. The highest profit percentage is in transaction D (48.33%). Choice D.
A man takes 6 hours 15 minutes in walking a distance and riding back to the starting place. He could walk both ways in 7 hours and 45 minutes. The time taken by him to ride back both ways is:
💡Correct Answer: Option C (4 hours 45 minutes)
Given: W+R=6 hr 15 min=375 min. 2W=7 hr 45 min=465 min. Multiplying the first equation by 2: 2W+2R=2(375)=750 min. Time to ride both ways: 2R=(2W+2R)−2W=750−465=285 minutes=4 hours 45 minutes. Choice C.
Q60
Basic Mathematics, Quantitative Aptitude & ReasoningSimultaneous Linear Equations
Two bus tickets from city A to B and three tickets from city A to C cost Rs. 77, but three tickets from city A to B and two tickets from city A to C cost Rs. 73. What are the fares for cities B and C from A?
💡Correct Answer: Option B (Rs. 13, Rs. 17)
Let fares be b and c: 2b+3c=77 (Eq 1) and 3b+2c=73 (Eq 2). Adding both equations: 5(b+c)=150⟹b+c=30. Subtracting Eq 2 from Eq 1: −b+c=4⟹c−b=4. Solving both gives c=17 and b=13. The fares are Rs. 13 and Rs. 17. Choice B.
Q61
Basic Mathematics, Quantitative Aptitude & ReasoningNumber Series
Complete the number series: 4832, 5840, 6848, 7856, ________
💡Correct Answer: Option D (8864)
Successive differences between consecutive terms: 5840−4832=1008, 6848−5840=1008, 7856−6848=1008. Adding constant difference 1008: 7856+1008=8864. Choice D.
Q62
Basic Mathematics, Quantitative Aptitude & ReasoningLetter Series
A series is given with one term missing. Select the correct alternative: PRS, TWY, XBE, BGK, ?
💡Correct Answer: Option C (FLQ)
Letter position shifts in each position: 1st letters: P(16)+4T(20)+4X(24)+4B(2)+4F(6). 2nd letters: R(18)+5W(23)+5B(2)+5G(7)+5L(12). 3rd letters: S(19)+6Y(25)+6E(5)+6K(11)+6Q(17). Resulting triad is FLQ. Choice C.
In a certain code "BASE" is written as "GUCD". How is "COMMAND" written in that code?
💡Correct Answer: Option C (FPCOOQE)
Analyzing the transformation from BASE to GUCD: applying the Caesar rotational and positional shift algorithm to COMMAND yields FPCOOQE. Choice C.
Q64
Basic Mathematics, Quantitative Aptitude & ReasoningDirection Sense & Pythagoras Theorem
A child is looking for his father. He went 90 meters in the east before turning to his right. He went 20 meters before turning to his right again to look for his father at his uncle's place 30 meters from this point. His father was not there. From there, he went 100 meters to his north before meeting his father in a street. How far did the son meet his father from starting point?
💡Correct Answer: Option C (100 meter)
Starting at (0,0): 1. East 90 m −>(90,0). 2. Right (South) 20 m −>(90,−20). 3. Right (West) 30 m −>(60,−20). 4. North 100 m −>(60,−20+100)=(60,80). Shortest distance from origin: d=602+802=3600+6400=10000=100 meters. Choice C.
R is the son of A's father's sister. S is son of D, who is the mother of G and grandmother of A. H is the father of T and grandfather of R. D is wife of H. How is R related to D?
💡Correct Answer: Option C (Grandson)
D is the wife of H. Since H is the grandfather of R and D is H's wife, D is the grandmother of R. Therefore, R is the Grandson of D. Choice C.
Q66
Basic Mathematics, Quantitative Aptitude & ReasoningStatements and Conclusions
Statement: After joining, Municipal Commissioner told to people of city "A" - "My first and foremost task is to beautify this city like Indore." Conclusions: I. The people of city "A" are not aware about the present condition of the city. II. The Commissioner worked in Indore and has good experience of beautifying cities. Choose the correct Answer:
💡Correct Answer: Option A (Neither conclusion I nor conclusion II follows.)
Neither conclusion is logically entailed: The Commissioner's aspirational remark does not mean the citizens are unaware of their city's condition (I is invalid), nor does benchmarking against clean Indore prove that the commissioner previously worked in Indore (II is unwarranted). Choice A.
If 'A&B' means A is father of B, 'A*B' means A is brother of B, 'AB′meansAismotherofB,thenwhichofthefollowingiscorrectaboutKT&M?
💡Correct Answer: Option B (T is son of K)
In expression K\T\&M:K\T means K is mother of T; T&M means T is father of M. Since T is the father of M, T is male; therefore, T is the Son of K. Choice B.
Q68
Basic Mathematics, Quantitative Aptitude & ReasoningClocks & Time Loss
A clock is set right at 12 noon. It loses 10 minutes in 24 hours. What will be the time indicated by the clock at 3:00 PM on the 4th day?
💡Correct Answer: Option B (02:30 PM)
From 12 noon on day 1 to 3:00 PM on day 4 is exactly 75 hours (3×24=72 hours+3 hours). Rate of loss =24 hrs10 min=125 min/hr. Total loss in 75 hours =75×125=31.25 minutes≈30 minutes. When true time is 3:00 PM, the clock will indicate 3:00 PM−30 minutes=02:30 PM. Choice B.
Q69
Computer Science, Operating Systems & Digital ElectronicsOperating Systems & Storage
The process of dividing a magnetic disk into tracks and sectors during disk preparation is known as:
💡Correct Answer: Option A (Formatting)
Disk Formatting (low-level/high-level formatting) is the process of preparing a data storage device such as a hard disk drive by dividing its magnetic surface into concentric tracks and sectors to install a file system.
Q70
Computer Science, Operating Systems & Digital ElectronicsCyber Security Fundamentals
Who is popularly known as the 'Father of Computer / Cyber Security' for formulating the foundational principle of cryptographic security?
💡Correct Answer: Option B (August Kerckhoffs)
August Kerckhoffs is widely recognized as a founding father of modern cryptography and cybersecurity for Kerckhoffs's Principle (1883), which dictates that a cryptographic system must remain secure even if everything about the system, except the key, is public knowledge. (Bob Thomas wrote Creeper). Choice B.
Q71
Computer Science, Operating Systems & Digital ElectronicsOperating System History
What was the very first commercial GUI version of Microsoft Windows released in 1985?
💡Correct Answer: Option C (Windows 1.01)
Microsoft released Windows 1.01 on 20 November 1985 as its very first graphical personal computer operating environment running on MS-DOS.
Q72
Computer Science, Operating Systems & Digital ElectronicsComputer Peripherals (Printers)
Which of the following is NOT a valid category of impact printers?
💡Correct Answer: Option B (Laser Printers)
Laser Printers are Non-Impact Printers that use electrostatic xerography, toner powder, and a laser beam to print without striking the paper. Dot-matrix, line, and daisy-wheel printers are impact printers.
Q73
Computer Science, Operating Systems & Digital ElectronicsMS Office (Excel)
What is the smallest individual addressable unit of a worksheet in Microsoft Excel?
💡Correct Answer: Option A (Cell)
A Cell (the rectangular intersection of a vertical column and a horizontal row, e.g., A1) is the fundamental smallest unit of data entry in an MS Excel worksheet.
Which of the following elements of electrical and electronic engineering CANNOT be analyzed using Ohm's law (V=IR)?
💡Correct Answer: Option C (Transistors)
Ohm's law applies strictly to linear bilateral circuit elements. Transistors (and semiconductor diodes) are non-linear active devices whose voltage-current characteristics are non-linear; hence Ohm's law cannot be directly applied. Choice C.
Which of the following statements according to fundamentals of electrical energy is INCORRECT about alternating current (AC)?
💡Correct Answer: Option A (Frequency is zero)
Statement A is completely incorrect: Direct Current (DC) has zero frequency (f=0), whereas Alternating Current has a periodic oscillating frequency (e.g. 50 Hz or 60 Hz). Choice A.
Q76
Computer Science, Operating Systems & Digital ElectronicsComputer Characteristics
Which of the following is NOT an inherent operational characteristic of a computer?
💡Correct Answer: Option D (I.Q.)
A computer possesses speed, versatility, diligence (tirelessness), and accuracy, but has No I.Q. (Intelligence Quotient is zero) because it cannot think or make independent decisions without programmed human instructions. Choice D.
Q77
Computer Science, Operating Systems & Digital ElectronicsHistory of Computing
Which of the following historical calculating devices used positional bead notation on wires to represent decimal numbers?
💡Correct Answer: Option A (Abacus)
The Abacus is the ancient mechanical calculating frame that utilizes sliding beads on parallel rods using positional place-value notation to represent and calculate decimal numbers.
Which international organization sets and publishes standard technical rules for Engineering Drawing and technical product documentation?
💡Correct Answer: Option C (ISO)
The International Organization for Standardization (ISO, specifically ISO/TC 10) sets universally recognized international standards for technical drawings, geometric dimensioning, and product specification.
According to ISO engineering drawing standards, the recommended method of dimensioning a spherical surface with a diameter of 20 mm is:
💡Correct Answer: Option D (SØ20)
Under ISO technical drawing conventions, a spherical diameter dimension is preceded by the prefix 'SØ' (Spherical Diameter symbol) followed by the numerical value: SØ20.
The distance between the plates of a parallel plate capacitor is tripled while keeping other parameters unchanged. The new capacitance will become:
💡Correct Answer: Option B (One-third of the initial capacitance)
Capacitance of a parallel plate capacitor is inversely proportional to plate separation distance: C=dεA. When d′=3d, new capacitance C′=3dεA=3C (One-third of initial capacitance). Choice B.
i -> 2 (Gallium Arsenide GaAs: direct bandgap semiconductor used for Semiconductor Lasers and LEDs), ii -> 4 (Nichrome alloy: high resistivity heating element), iii -> 5 (Piezoelectric quartz crystal: precise frequency oscillator), iv -> 1 (Silicon: base substrate for Integrated Circuits). Correct code: 2, 4, 5, 1 (Choice A).
Q82
Computer Science, Operating Systems & Digital ElectronicsNumber Systems (Hexadecimal to Decimal)
The decimal equivalent of the hexadecimal number (BAD)16 is:
💡Correct Answer: Option B (2989)
Converting (BAD)16 to base 10: B=11, A=10, D=13. Value =(11×162)+(10×161)+(13×160)=(11×256)+(10×16)+(13×1)=2816+160+13=2989. Choice B.
Read the below statements regarding a p-n junction diode: I. Diode is an uncontrolled device II. Diode is a rectifying device III. Diode is a unidirectional device IV. Diode has three terminals Which of the above mentioned statements is FALSE regarding a p-n junction diode?
💡Correct Answer: Option B (Only IV)
Statement IV is completely false: A p-n junction diode is a two-terminal semiconductor device (anode and cathode), not a three-terminal device. Statements I, II, and III are all correct physical properties. Correct: Only IV is false (Choice B).
In the normal operating (low slip) region, the torque of a three-phase induction motor is:
💡Correct Answer: Option C (Proportional to slip)
In a 3-phase induction motor running under normal working load (small values of slip s), the rotor reactance sX2 is negligible compared to rotor resistance R2, causing torque to be directly Proportional to slip (T∝s). Choice C.
Q85
Audio-Visual Systems, Television, Electronics & Electrical EngineeringCircuit Theory (Inductor Properties)
An electrical inductor does not allow a sudden change of:
💡Correct Answer: Option A (Current)
Because the voltage across an inductor is proportional to the rate of change of current (v=Ldtdi), an instantaneous jump in current would demand infinite voltage; hence, an inductor opposes any sudden change in Current. (A capacitor opposes sudden change in voltage).
Which of the following are the primary properties of an active electronic device (such as transistors and vacuum tubes)? I. Controls flow of electrons II. Amplification III. Rectification Choose the correct option:
💡Correct Answer: Option C (I, II and III)
Active devices have the ability to electrically control electron charge carrier flow (I), provide power gain or Amplification (II), and achieve Rectification (III) ⟹ I, II and III. Choice C.
Q87
Audio-Visual Systems, Television, Electronics & Electrical EngineeringPower Electronics History
Which of the following is considered the earliest high-power based electronic device developed for high-voltage DC rectification?
💡Correct Answer: Option A (Mercury Arc valves)
The Mercury Arc Valve (invented by Peter Cooper Hewitt in 1902) was the first commercial high-power electronic device used for converting high-voltage alternating current into direct current for industrial motors and HVDC systems. Choice A.
In moving-coil meters, a swamping resistance (made of Manganin with a nearly zero temperature coefficient) is connected in series with the meter coil to compensate for:
💡Correct Answer: Option A (Error due to temperature true variations)
A Swamping Resistance (composed of Manganin) is connected in series with the copper galvanometer coil to minimize and compensate for measuring errors caused by ambient temperature changes in coil resistance. Choice A (I Only).
A high frequency AC signal is applied to a Permanent Magnet Moving Coil (PMMC) instrument. If the RMS value of the AC signal is 2V, the reading of the instrument will be:
💡Correct Answer: Option D (Zero)
A PMMC instrument responds exclusively to the average DC value of current (Iavg). When alternating current of commercial or high frequency is applied, the mechanical inertia of the moving system cannot follow the rapid reversals, resulting in a net deflection of Zero. Choice D.
In telecommunication classifications, a modem is historically classified as a 'low-speed modem' if the data transmission rate handled is up to:
💡Correct Answer: Option D (600 bps)
Under early ITU-T standards, modems operating at transmission speeds up to 600 bps (such as Bell 103/V.21 at 300 bps and Bell 202 at 600 bps) were categorized as low-speed modems. Choice D.
Q91
Audio-Visual Systems, Television, Electronics & Electrical EngineeringTelevision Systems (CCIR-B Standards)
In the CCIR-B 625-line television broadcast system, what is the standardized time period between the start of one horizontal synchronization pulse and the next (horizontal line duration)?
💡Correct Answer: Option A (64 μs)
In 625-line CCIR System B, the horizontal line scanning frequency is 15,625 Hz. The total horizontal line scanning period TH=15625 Hz1=64×10−6 s=64μs. Choice A.
Q92
Computer Science, Operating Systems & Digital ElectronicsDigital Logic Gates
How many distinct input state entries will be present in the truth table of a 4-input digital NAND gate?
💡Correct Answer: Option C (16)
For any digital logic gate with n binary inputs, the truth table contains 2n distinct combinations. For 4 inputs, the number of entries =24=16. Choice C.
The Successive Approximation Technique (SAR) is most widely used in:
💡Correct Answer: Option A (Analog to Digital Conversion)
The Successive Approximation Register (SAR) is a high-speed, highly accurate binary search architecture primarily used in Analog-to-Digital Converters (ADCs). Choice A.
Q94
Audio-Visual Systems, Television, Electronics & Electrical EngineeringInduction Motor Starters
An autotransformer starter is suitable for starting:
💡Correct Answer: Option C (Both A and B)
Unlike a Star-Delta starter (which is restricted only to motors designed to run delta-connected), an autotransformer starter can be used to start 3-phase squirrel cage induction motors with stator windings connected in Either Star or Delta configuration. Choice C.
Which engineering methodology formally recognises and optimizes the inherent interrelationships between product design and industrial manufacturing?
💡Correct Answer: Option A (Design for manufacture and assembly (DFMA))
Design for Manufacture and Assembly (DFMA) is the integrated concurrent engineering design methodology focused on streamlining component manufacturing ease and rapid assembly.
Q96
Computer Science, Operating Systems & Digital ElectronicsData Structures (Arrays)
What is a primary disadvantage of using static arrays in programming?
💡Correct Answer: Option D (There are chances of wastage of memory space if elements inserted in an array are lesser than the allocated size)
Because arrays have fixed static memory allocation declared at compile time, allocating a large upper bound leads to significant memory wastage when fewer elements are actually stored. Choice D.
Q97
Computer Science, Operating Systems & Digital ElectronicsObject-Oriented Programming (Destructors)
In object-oriented programming with multilevel inheritance, if class C inherits class B, and class B inherits class A, in which sequence are their destructors called when an object of class C is destroyed?
💡Correct Answer: Option C (~C() then ~B() then ~A())
In C++ and OOP, destructors are always invoked in the exact reverse order of constructors: the derived class destructor executes first, followed by the intermediate base, ending with the top root base class: ∼C()−>∼B()−>∼A(). Choice C.
In the equivalent circuit obtained from the no-load test of an induction motor, what does the shunt resistance component (Rc or R0) represent?
💡Correct Answer: Option B (Core Loss Only)
In the shunt magnetizing branch of an induction motor's equivalent circuit, the core resistance R0 (shunt resistance) specifically represents the magnetizing Core Losses (hysteresis and eddy current iron losses in the stator laminations). Choice B.
In DC machine armature winding, which of the following represents the Commutator Pitch (Yc)?
💡Correct Answer: Option C (Number of commutator segments between two successive coils.)
Commutator Pitch (Yc) is defined as the distance measured around the commutator (expressed as the number of commutator segments) between the two segments to which the two ends of an armature coil are connected. Choice C.
Q100
Audio-Visual Systems, Television, Electronics & Electrical EngineeringCommunication Systems Elements
How many basic functional elements are essential for any communication system?
💡Correct Answer: Option B (3)
Every electrical communication system fundamentally consists of exactly 3 essential elements: 1. Transmitter, 2. Communication Channel/Medium, and 3. Receiver. Choice B.
Which of the given filter designs exhibits maximum passband flatness (maximally flat response without ripples)?
💡Correct Answer: Option B (Butterworth filter)
The Butterworth filter is designed to have a frequency response that is mathematically as flat as mathematically possible in the passband (often termed a 'maximally flat magnitude' filter). Choice B.
A filter that passes all frequencies lying outside a designated band while sharply attenuating all frequencies between those two cutoff frequencies is called a:
💡Correct Answer: Option A (Band Elimination Filter)
A Band Elimination Filter (also known as a Band-Reject, Band-Stop, or Notch Filter) passes all frequencies below a lower cutoff and above an upper cutoff, attenuating frequencies within the intermediate band. Choice A.
Q103
Audio-Visual Systems, Television, Electronics & Electrical EngineeringTelecommunication Transmission Units
The value of one decibel (dB) is equal to approximately how many Nepers (N)?
💡Correct Answer: Option A (0.115 N)
The conversion relationship between Nepers and Decibels: 1 Neper=20log10(e)≈8.686 dB. Therefore, 1 dB=8.6861=20ln10≈0.1151 Nepers. Choice A.
Q104
Computer Science, Operating Systems & Digital ElectronicsMicroprocessor Architecture (8085)
The classic Intel 8085 microprocessor IC has how many physical pins?
💡Correct Answer: Option C (40)
The Intel 8085 is an 8-bit NMOS microprocessor housed in a standard 40-pin Dual In-line Package (DIP).
A True RMS reading voltmeter can accurately measure the effective heating voltage of: I. Sine waveforms II. Square waveforms III. Saw tooth waveforms Choose the correct option:
💡Correct Answer: Option C (I, II and III)
Unlike average-responding AC meters (calibrated solely for pure sinusoids), a True RMS voltmeter calculates the root-mean-square heating value of any complex periodic waveform—including sinusoidal, square, triangular, and sawtooth waves ⟹ I, II and III. Choice C.
In a self-balancing potentiometric digital voltmeter (P-DVM), the physical adjustment of the sliding wiper contact is driven by a:
💡Correct Answer: Option B (Two phase servomotor)
In null-balancing potentiometric chart recorders and potentiometric DVMs, the amplified error voltage excites the control winding of a high-torque Two-Phase AC Servomotor to rotate the wiper until balance is reached. Choice B.
The standard microwave frequency at which domestic microwave ovens operate is:
💡Correct Answer: Option C (2.45 GHz)
Household microwave ovens operate at an ISM (Industrial, Scientific, and Medical) standard frequency of 2.45 GHz (wavelength ≈12.2 cm), optimized for efficient dielectric heating of water molecules in food.
According to the Radar Range Equation (Rmax∝4Pt), if the maximum detection range of a radar is to be doubled while keeping all other parameters constant, the transmitted peak power must be increased by:
💡Correct Answer: Option C (16 fold)
From the radar range equation: Rmax=[(4π)3SminPtG2λ2σ]1/4⟹Rmax∝Pt1/4. To make Rmax′=2Rmax, the required power ratio is PtPt′=24=16-fold. Choice C.
A +5 V PCB power supply rail that has been observed to be 'pulled down' to a lower +3.4 V level is typically caused by:
💡Correct Answer: Option B (A Faulty Regulator / heavy partial load)
When an onboard DC power rail drops partially from +5V down to +3.4V (rather than collapsing to 0V as in a dead short), it is classic evidence of a Faulty Voltage Regulator (e.g. failing 7805 regulator) or severe excessive current loading. Choice B.
What is the standard technician procedure after discovering that a single logic gate within an Integrated Circuit (IC) is internally faulty?
💡Correct Answer: Option C (Replace The IC Involved)
Integrated circuits are hermetically sealed monolithic silicon microchips; individual microscopic internal gates cannot be repaired. The correct service procedure is to desolder and Replace the entire IC. Choice C.
A snubber circuit (series resistor-capacitor RC network connected across an SCR) is primarily used to:
💡Correct Answer: Option B (Limit the rate of rising in voltage across SCR)
An RC Snubber circuit connected in parallel across a Thyristor (SCR) protects the device against false dv/dt triggering and breakdown by Limiting the rate of rise of forward voltage across the SCR. Choice B.
Find the output ripple frequency of a six-phase half-wave rectifier supplied from a 220V, 50Hz AC input source:
💡Correct Answer: Option D (300 Hz)
For an m-phase half-wave rectifier, the output ripple frequency is given by fripple=m×fin. For a six-phase system (m=6) with 50 Hz supply: fripple=6×50 Hz=300 Hz. Choice D.
Q113
Computer Science, Operating Systems & Digital ElectronicsMicroprocessor Machine Cycles
Which of the following represents the correct fundamental machine cycle sequence in microprocessor instruction execution?
In standard microprocessor architecture (like 8085), the execution of instructions initiates with Opcode Fetch, followed by Memory Read/Write or I/O Read/Write machine cycles as required by the instruction. Choice A.
Q114
Computer Science, Operating Systems & Digital Electronics8085 Vectored Interrupts
What is the hexadecimal vectored interrupt restart address for the RST-5 software instruction in the 8085 microprocessor?
💡Correct Answer: Option C (0028 H)
In 8085, vector restart locations are calculated as N×8. For RST-5: 5×8=4010. Converting 40 to hexadecimal: 40=(2×16)+8=(0028)16. Therefore, the restart vector address is 0028 H. Choice C.
Liquid Crystal Display (LCD) panels are not self-illuminating. Which of the following devices is widely used as a backlight illumination source in classic LCD screens?
💡Correct Answer: Option C (CCFL)
Because liquid crystals do not emit light on their own, Cold Cathode Fluorescent Lamps (CCFLs) or modern white LED arrays are employed as uniform edge/direct backlight illumination sources. Choice C.
The momentary pulsed testing of a domestic electric mixer grinder motor to check mechanical seating and balance is called:
💡Correct Answer: Option A (Inching)
Inching (or jogging) is the quick, momentary energization of an electric motor to produce small, brief rotations for testing blade seating, alignment, and initial starting performance. Choice A.
Q117
Computer Science, Operating Systems & Digital ElectronicsSystem Software (Loaders)
Which of the following statements about system loaders is/are correct? I. A loader is responsible for transferring the object program from secondary memory to the main memory. II. Embedded systems typically do not have loaders (programs run directly from ROM/Flash). III. The loader usually resides permanently in memory. Choose the correct statement:
💡Correct Answer: Option A (I and II)
Statements I and II are correct: Loaders load compiled executable binary code into physical RAM for CPU execution (I), and simple bare-metal embedded systems execute firmware directly in place from non-volatile ROM/Flash without a dynamic loader (II). Statement III is false because transient loaders relinquish memory once execution commences. Correct: I and II (Choice A).
Q118
Computer Science, Operating Systems & Digital ElectronicsMicroprocessors (Z80 Architecture)
In the Zilog Z80 8-bit microprocessor, how is the alternate (shadow) set of working registers (A′,F′,B′,C′,D′,E′,H′,L′) officially designated?
💡Correct Answer: Option A (Suffix (apostrophe/prime symbol))
The Z80 features a duplicate shadow register set denoted by a prime/apostrophe Suffix (e.g. A′,F′,BC′,DE′,HL′) toggled using the EX AF, AF' and EXX exchange instructions. Choice A.
Q119
Audio-Visual Systems, Television, Electronics & Electrical EngineeringData Communication & Multiplexing
Which type of multiplexing technique is inherently digital in operation and CANNOT be used directly for continuous analog signalling without prior sampling and digitization?
💡Correct Answer: Option A (TDM)
Time Division Multiplexing (TDM) requires interleaving discrete time slices or digital bitstreams; it cannot transmit continuous analog signals without prior analog-to-digital conversion or pulse modulation (unlike FDM and optical WDM, which naturally multiplex analog carriers across frequency bands). Choice A.
In digital line coding, in which type of transmission scheme do the signalling voltages occur on both sides (positive and negative) of the time axis (for example, +V for 0 and -V for 1)?
💡Correct Answer: Option A (polar)
In Polar Line Coding schemes (such as Polar NRZ), the voltage levels represent binary digits using non-zero voltages of opposite polarity on both sides of the zero axis (e.g. +V for binary 0 and −V for binary 1). (Bipolar uses three levels +V,0,−V; Unipolar uses only one polarity +V and 0). Choice A.
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About JKSSB Audio Visual Mechanic 2025 Previous Year Paper
This page provides the full solved question paper for the JKSSB Audio Visual Mechanic examination conducted in 2025. Every MCQ is presented with verified answer keys and detailed bilingual explanations to support concept building.
Key subjects covered in this paper include General English, General Awareness, Current Affairs & J&K UT Special Reference, Basic Mathematics, Quantitative Aptitude & Reasoning, Computer Science, Operating Systems & Digital Electronics, Audio-Visual Systems, Television, Electronics & Electrical Engineering. Practicing authentic previous year questions is the proven way to master question patterns and improve accuracy for upcoming exams across Jammu & Kashmir.