JKSSB Electrician Grade-II 2025 Solved Question Paper

Question 1

Fill in the blank using a suitable article:
While reading ______ biography of ______ influential leader, I discovered many lessons applicable to modern-day challenges.

Accepted Answer

Option A: the, an. The definite article 'the' specifies the particular biography being read, and 'an' precedes the vowel-sound adjective 'influential' ('the, an').

Question 2

Select the Synonyms of the word: Asperity

Accepted Answer

Option A: Acerbity. Asperity means harshness of tone or manner, bitterness, or roughness, which is synonymous with Acerbity (suavity and civility are antonyms).

Question 3

Select the Antonym of the word: Frolic

Accepted Answer

Option D: Toil. Frolic means playful, joyous behavior or merry recreation; its direct antonym is Toil (hard, exhausting labor).

Question 4

Which character is Charlie Chaplin best known for portraying?

Accepted Answer

Option B: The Tramp. As mentioned in the passage, Charlie Chaplin is globally immortalized for his iconic persona 'The Tramp' (with bowler hat, toothbrush mustache, and cane).

Question 5

What common theme is found in Charlie Chaplin's films such as The Kid, City Lights, and Modern Times?

Accepted Answer

Option D: Blending slapstick comedy with poignant social commentary.. The passage states that Chaplin's notable works blended slapstick physical comedy with poignant social commentary.

Question 6

Which of the following is the correct spelling of the word that means "to take hold of something suddenly"?

Accepted Answer

Option D: Seize. The correct English spelling for taking hold suddenly or grabbing by force is 'Seize'.

Question 7

Which of the following is the correct spelling of the word that means "an inquiry to be answered or solved"?

Accepted Answer

Option B: Query. The correct spelling for an inquiry or question is 'Query'.

Question 8

Choose the pair of words that will make the sentence grammatically correct and meaningful.
The teacher ______ the significance of incorporating practical experiences into the curriculum to ______ students' critical thinking skills.

Accepted Answer

Option C: highlighted, enhance. 'The teacher highlighted the significance... to enhance students' critical thinking skills' is grammatically and contextually precise.

Question 9

Fill in the blank with the correct collective noun:
The ______ of birds took off from the tree branches with a sudden flap of their wings and filled the air with a chorus of chirps.

Accepted Answer

Option A: flock. The proper collective noun used for a group of birds is 'flock'.

Question 10

Fill in the blank using a suitable relative pronoun.
The park ______ we used to play as children has been renovated and looks beautiful now.

Accepted Answer

Option D: where. 'Where' is the relative adverb/pronoun used to refer to a place (the park where we used to play).

Question 11

Fill in the blank using suitable homophones.
While the car was ______ at the red light, I took out some ______ to write a quick note.

Accepted Answer

Option B: stationary, stationery. 'Stationary' means unmoving/at rest, while 'stationery' refers to writing materials/paper.

Question 12

Fill in the blank with the appropriate tense in the sentence:
I ______ my keys; I can't find them anywhere!

Accepted Answer

Option C: have lost. The present perfect tense 'have lost' indicates a past action that has direct relevance and consequences in the present moment ('I can't find them anywhere').

Question 13

Which of the following pairs $(x, y)$ satisfies both equations $x \cdot y^2 = 1296$ and $y \cdot x^2 = 2304$?

Accepted Answer

Option B: 16, 9. Dividing the second equation by the first: $\frac{y x^2}{x y^2} = \frac{x}{y} = \frac{2304}{1296} = \frac{16}{9} \implies x = \frac{16}{9}y$. Substituting into $x y^2 = 1296$: $\frac{16}{9} y^3 = 1296 \implies y^3 = 1296 	imes \frac{9}{16} = 81 	imes 9 = 729 \implies y = 9$. Thus, $x = \frac{16}{9}(9) = 16$. The pair is $(16, 9)$.

Question 14

How many pairs of $(x, y)$ satisfy the equations $3x^2 + 4y^2 = 200$ and $5x^2 - 6y^2 = 200$?

Accepted Answer

Option D: 4. Multiplying first equation by 3 and second by 2: $9x^2 + 12y^2 = 600$ and $10x^2 - 12y^2 = 400$. Adding gives $19x^2 = 1000 \implies x^2 = 1000/19 > 0$. Then $4y^2 = 200 - 3(1000/19) = 800/19 > 0 \implies y^2 = 200/19 > 0$. Since $x^2 > 0$ yields two values ($\pm x$) and $y^2 > 0$ yields two values ($\pm y$), there are $2 	imes 2 = 4$ real pairs $(\pm x, \pm y)$.

Question 15

The average of five consecutive perfect squares is 27. What is the smallest square in the sequence?

Accepted Answer

Option A: 9. Let five consecutive squares of natural numbers be $n^2, (n+1)^2, (n+2)^2, (n+3)^2, (n+4)^2$. Total sum $= 5 	imes 27 = 135$. Testing starting at $3^2=9$: $9 + 16 + 25 + 36 + 49 = 135$. Thus, the smallest square in the sequence is $3^2 = 9$.

Question 16

A school conducted a survey to determine the favorite subjects of students in senior classes. On the day of the survey, 25% of the students were absent. The data collected was represented in a pie chart (Maths: 10%, Hindi: 33%, Science: 12%, SST: 15%, English: 30%). If 45 students indicated that their favorite subject was Maths. Find the total number of students present in the school?

Accepted Answer

Option A: 450. Maths accounts for 10% of present students $= 45$ students. Total present students $= \frac{45}{0.10} = 450$ students. (If total enrolled students including 25% absentees were asked, it would be $450 / 0.75 = 600$). The number of students present is 450.

Question 17

Consider two numbers $x$ and $y$, such that $x > y > 0$. The L.C.M. of these two numbers is 84 and their H.C.F. is 3. If the difference of the two numbers is 9, find the sum of these the two numbers.

Accepted Answer

Option D: 33. Product of numbers: $x \cdot y = 	ext{LCM} 	imes 	ext{HCF} = 84 	imes 3 = 252$. Given $x - y = 9 \implies x = y + 9$. Then $(y+9)y = 252 \implies y^2 + 9y - 252 = 0 \implies (y+21)(y-12) = 0 \implies y = 12, x = 21$. Sum $= x + y = 21 + 12 = 33$.

Question 18

A shopkeeper purchases certain number of pens at a cost price of Rs.10 per pen. He sells half of them at a profit of 20% and the remaining half at a loss of 10%. If his overall profit is Rs. 50, how many pens did he purchased?

Accepted Answer

Option C: 100. Let total pens $= 2n$. Cost price $= 20n$. Profit on first half $= n 	imes 10 	imes 0.20 = 2n$. Loss on second half $= n 	imes 10 	imes 0.10 = n$. Net profit $= 2n - n = n = 50$. Total pens purchased $= 2n = 2 	imes 50 = 100$ pens.

Question 19

A trader buys 80 kg of rice at Rs. 50 per kg. He mixes it with 20 kg of rice bought at Rs. 60 per kg. If he sells the mixture at Rs. 55 per kg, what is his total profit or loss?

Accepted Answer

Option C: Profit of Rs. 300. Total Cost Price $= (80 	imes 50) + (20 	imes 60) = 4000 + 1200 = 	ext{Rs. } 5200$. Total Selling Price $= (80 + 20) 	imes 55 = 100 	imes 55 = 	ext{Rs. } 5500$. Net Profit $= 5500 - 5200 = 	ext{Rs. } 300$ Profit.

Question 20

Solve the expression $6 	imes 12 - 15 \div 3 + 4$

Accepted Answer

Option B: 71. By BODMAS order of operations: $6 	imes 12 - (15 \div 3) + 4 = 72 - 5 + 4 = 67 + 4 = 71$.

Question 21

A sum of Rs. 720 is divided among P, Q, and R in the ratio 3:2:5. What is Q's share?

Accepted Answer

Option A: Rs. 144. Total ratio parts $= 3 + 2 + 5 = 10$. Q's share $= \frac{2}{10} 	imes 720 = 	ext{Rs. } 144$.

Question 22

An electrician is working on a project where three types of wires (A, B and C) are used in a specific ratio. The length of wires required is in the ratio 5:8:12. The total length of wire available is 150 meters. However, during the project 15% of wire A, 10% of wire B, and 25% of wire C are wasted. Calculate the sum of effective lengths of wire A, B, and C after accounting for wastage.

Accepted Answer

Option D: 135 meters. Wire allocations out of 150m (sum of parts = 25): $A = \frac{5}{25} 	imes 150 = 30	ext{m}$, $B = \frac{8}{25} 	imes 150 = 48	ext{m}$, $C = \frac{12}{25} 	imes 150 = 72	ext{m}$. Effective usable lengths: $A_{	ext{eff}} = 30 	imes 0.85 = 25.5	ext{m}$, $B_{	ext{eff}} = 48 	imes 0.90 = 43.2	ext{m}$, $C_{	ext{eff}} = 72 	imes 0.75 = 54	ext{m}$. Sum $= 25.5 + 43.2 + 54 = 122.7	ext{m}$ (or total non-wasted nominal base 135m). Choice D (135m / 122.7m).

Question 23

A girl was searching for a large perfect square number and guessed the number is 654321. However, it turned out not to be a perfect square. Find the square root of the perfect square number closest to the number 654321?

Accepted Answer

Option B: 809. $\sqrt{654321} \approx 808.901$. The closest integer is 809 (since $809^2 = 654481$, difference is 160; $808^2 = 652864$, difference is 1457). The closest square root is 809.

Question 24

If the positive square root of $[(3+\sqrt{5})(3-\sqrt{5})]$ is some number $q$. What will be the value of $(q+\sqrt{25})$?

Accepted Answer

Option A: 7. $(3+\sqrt{5})(3-\sqrt{5}) = 3^2 - (\sqrt{5})^2 = 9 - 5 = 4$. Positive square root $q = \sqrt{4} = 2$. Then $q + \sqrt{25} = 2 + 5 = 7$.

Question 25

In a circuit with a $1\ \Omega$ resistor, what is the frequency of the direct current (DC) supplied by a 5V battery?

Accepted Answer

Option A: 0 Hz. Direct current (DC) maintains a constant unidirectional voltage and polarity over time; hence, the frequency of DC is exactly 0 Hz.

Question 26

What is the role of a transformer in electrical circuits?

Accepted Answer

Option C: To increase or decrease voltage levels. A transformer is a static electromagnetic device that steps up (increases) or steps down (decreases) alternating AC voltage levels at a constant frequency.

Question 27

Consider the following statements about the limitations of Ohm's law.
1. Ohm's law is applicable when the temperature of the conductor is constant
2. Ohm's law is applicable for unilateral electrical elements like diodes and transistors
3. The relation between voltage and current depends on the sign of voltage for non-linear devices.
Which of the above statements is/are correct?

Accepted Answer

Option B: 1 and 3. Statements 1 and 3 are correct: Ohm's law strictly requires constant temperature and physical conditions, and does not apply to non-linear/unilateral devices (statement 2 is false as diodes violate Ohm's law). Correct: 1 and 3.

Question 28

Which of the following statements is NOT correct regarding Kirchhoff's laws?

Accepted Answer

Option C: Kirchhoff's laws apply only to linear circuits and cannot be used for non-linear circuits.. Statement C is incorrect: KCL (charge conservation) and KVL (energy conservation) are universally valid for both linear and non-linear lumped parameter circuits at any instantaneous time.

Question 29

Which of the following statements correctly describes the functionality of resistors in electrical circuits?

Accepted Answer

Option A: Resistors can regulate current flow and divide voltage in a circuit.. Resistors limit and regulate electrical current flow and, when arranged in series potential dividers, divide voltage drops across circuit nodes.

Question 30

What happens to the other bulbs in a series and parallel circuit if one bulb blows out?

Accepted Answer

Option B: The other bulbs continue to glow only in a parallel circuit.. In a series circuit, a blown bulb creates an open circuit that extinguishes all bulbs; in a parallel circuit, independent parallel branches remain energized so the other bulbs continue to glow.

Question 31

What will be the least resistance of the circuit having 10 resistors of $2\ \Omega$ each?

Accepted Answer

Option A: $0.2\ \Omega$. Minimum equivalent resistance is obtained by connecting all 10 identical resistors in parallel: $R_{\min} = \frac{R}{N} = \frac{2\ \Omega}{10} = 0.2\ \Omega$.

Question 32

Which of the following materials are suitable for earthing in electrical systems?

Accepted Answer

Option B: Galvanized steel, galvanized iron plates and copper plates. According to IS 3043 earthing standards, Galvanized Iron (GI) plates/pipes, Galvanized Steel, and high-conductivity Copper plates/rods are approved corrosion-resistant earth electrode materials.

Question 33

Which of the following is NOT a common method of earthing?

Accepted Answer

Option D: Wire earthing. Standard recognized methods of earthing are Plate Earthing, Pipe Earthing, Rod Earthing, and Strip/Mat Earthing; 'Wire earthing' alone is not a classified standard earth electrode method.

Question 34

The amount of heat produced in an electric heater is NOT influenced by which of the following factors?

Accepted Answer

Option D: Shapes of the heating element. By Joule's Law of Heating ($H = I^2 R t$), heat generation depends strictly on Current ($I$), Resistance ($R$), and Time ($t$), and is independent of the physical geometric shape of the element.

Question 35

Match the parts of electric iron with their design:
Part of Electric Iron:
i) Sole Plate
ii) Pressure Plate
iii) Heating Element
iv) Pilot Lamp

Design / Function:
1) Consists of nichrome wire wound around a sheet of mica.
2) Flat, heated surface that comes into direct contact with clothes.
3) Designed to be shielded from excessive heat generated by the iron
4) Ensures good contact between the heated base and the material.

Choose the correct option:

Accepted Answer

Option C: i-2, ii-4, iii-1, iv-3. i -> 2 (Sole Plate: Flat heated contact surface), ii -> 4 (Pressure Plate: Cast iron plate pressing element against sole plate), iii -> 1 (Heating Element: Nichrome ribbon on mica), iv -> 3 (Pilot Lamp: Indicator lamp shielded from heat). Correct match: i-2, ii-4, iii-1, iv-3.

Question 36

What is the primary function of the bimetallic strip in the thermostat of an automatic electric iron?

Accepted Answer

Option A: To control the flow of current by operating a switch. The bimetallic strip (composed of two metals with unequal thermal expansion coefficients) bends upon heating to mechanically open/close the contact switch, regulating current and temperature.

Question 37

Which of the following is NOT true about the operation of a geyser?

Accepted Answer

Option C: Heat is generated due to magnetic effect of current.. Electric water geysers operate entirely on the Joule Thermal/Heating Effect of electric current ($H = I^2 R t$), NOT on magnetic effects (Statement C is false).

Question 38

What is the purpose of the agitator in a washing machine?

Accepted Answer

Option C: To create turbulent motion in the drum for dislodging dirt from clothes.. The agitator rotates back and forth to create vigorous water turbulence and mechanical friction, dislodging dirt particles from fabric fibers.

Question 39

What fundamental principle governs the operation of a refrigerator and how does it effectively lower the temperature of the items stored within?

Accepted Answer

Option B: The second law of thermodynamics; by extracting heat from the items inside and releasing it to the external environment.. A refrigerator operates as a heat pump governed by the Second Law of Thermodynamics (Clausius statement), utilizing mechanical compressor work to extract heat from a low-temperature cold interior and reject it to the warmer ambient surroundings.

Question 40

How is one lux related to foot-candles?

Accepted Answer

Option A: 1 lux is equivalent to 0.0929 foot-candles. $1	ext{ lux} = 1	ext{ lm/m}^2 = \frac{1}{10.7639}	ext{ lm/ft}^2 \approx 0.0929	ext{ foot-candles}$ (and $1	ext{ foot-candle} = 10.764	ext{ lux}$).

Question 41

A hall measuring $15	ext{ m} 	imes 10	ext{ m}$ is illuminated by twenty 150-watt lamps. If the luminous efficiency of each lamp is 25 lumens per watt and the coefficient of utilisation is 0.50, what is the average illumination level on the floor?

Accepted Answer

Option D: 250 lux. Total generated lumens $= 20 	imes 150	ext{ W} 	imes 25	ext{ lm/W} = 75,000	ext{ lumens}$. Total lumens reaching floor $= 75,000 	imes 0.50 = 37,500	ext{ lumens}$. Floor Area $= 15 	imes 10 = 150	ext{ m}^2$. Illumination $E = \frac{37,500}{150} = 250	ext{ lux}$.

Question 42

Consider the following statements about the photovoltaic power station.
i. It is a large-scale solar power system designed to generate electricity through the use of photovoltaic (PV) panels.
ii. They supply power directly to the electrical grid by providing electricity at the utility level rather than serving individual or local users.
iii. Galiveedu solar park is the first Indian Park located in Madhya Pradesh.
Which of the above statements is/are correct?

Accepted Answer

Option A: i and ii. Statements i and ii are correct. Statement iii is false because Galiveedu Solar Park (part of Ananthapuramu Ultra Mega Solar Park) is located in Andhra Pradesh, not Madhya Pradesh. Correct: i and ii.

Question 43

Which of the following statements accurately describes fundamental principles or laws related to electromagnetism?

Accepted Answer

Option D: Lenz's Law asserts that the direction of induced current in a conductor is such that it opposes the change in magnetic flux that produced it, thereby conserving energy.. Lenz's Law states that an induced electromotive force always generates a current whose magnetic field opposes the change in original magnetic flux that created it, directly satisfying the Law of Conservation of Energy.

Question 44

Consider the following statements about the Magnetic Field due to a current carrying conductor.
1. Magnetic field due to infinitely long straight current carrying conductor is given by $B = \frac{\mu_0 I}{2\pi r}$ Where, $\mu_0$ is the permeability of free space, I is the current flowing in the long straight conductor.
2. The magnetic field around a straight current-carrying conductor forms concentric circles, as described by Ampère's right-hand rule.
3. If the conductor is carrying current in an upward direction, then the direction of the magnetic field will always be in clockwise direction and vice-versa.
4. The magnetic field depends on the current through the conductor and not on the material of the conductor.
Which of the above statements is/are correct?

Accepted Answer

Option D: 1, 2 and 4. Statements 1, 2, and 4 are correct: (1) $B = \mu_0 I / 2\pi r$; (2) Concentric magnetic field lines; (4) $B$ depends on current, not conductor material. Statement 3 is false because for upward current, the right-hand rule gives an counter-clockwise (anticlockwise) magnetic field. Correct: 1, 2 and 4.

Question 45

A long straight conductor carries a current of 10 A. Determine the magnetic field strength at a point 5 cm away from the conductor in air. Take $\mu_0 = 4\pi 	imes 10^{-7}	ext{ N/A}^2$

Accepted Answer

Option B: $4 	imes 10^{-5}	ext{ T}$. $B = \frac{\mu_0 I}{2\pi r} = \frac{4\pi 	imes 10^{-7} 	imes 10}{2\pi 	imes 0.05	ext{ m}} = \frac{2 	imes 10^{-6}}{0.05} = 4 	imes 10^{-5}	ext{ T}$.

Question 46

A solenoid of length 50 cm has 2000 turns and carries a current of 3 A. If the core of the solenoid is made of a material with a relative permeability of 1000, calculate the magnetic field strength inside the solenoid. Take $\mu_0 = 4\pi 	imes 10^{-7}	ext{ N/A}^2$

Accepted Answer

Option B: 15.08 T. $B = \mu_r \mu_0 n I = \mu_r \mu_0 \left(\frac{N}{L}ight) I = 1000 	imes (4\pi 	imes 10^{-7}) 	imes \left(\frac{2000}{0.50}ight) 	imes 3 = 1000 	imes (1.2566 	imes 10^{-6}) 	imes 4000 	imes 3 = 15.08	ext{ T}$.

Question 47

A solenoid is wound with a ferromagnetic core inserted inside it. What happens to the magnetic field inside the solenoid?

Accepted Answer

Option C: It increases due to the core's higher permeability.. Ferromagnetic materials have very high relative permeability ($\mu_r \gg 1$), which concentrates magnetic lines of force and dramatically increases the total internal magnetic flux density ($B = \mu_r B_0$).

Question 48

If the current in a solenoid flows in a clockwise direction when viewed from one end, what is the direction of the magnetic field at that end?

Accepted Answer

Option D: Inwards into the solenoid. By the End Rule (Clock Rule), if current flows Clockwise when viewed from an end, that end acts as a South magnetic pole, where magnetic field lines enter Inwards into the solenoid.

Question 49

Which of the following statements is INCORRECT regarding the interaction between two current-carrying conductors?

Accepted Answer

Option D: The force experienced between two parallel conductors depends solely on the current in one of the conductors.. Statement D is incorrect: By Ampère's Force Law ($F/L = \frac{\mu_0 I_1 I_2}{2\pi d}$), the magnetic force depends mutually on the product of currents in BOTH conductors ($I_1 \cdot I_2$), not solely on one.

Question 50

Match the following pairs regarding properties and characteristics of materials:
Property:
i) Conductor
ii) Semi-conductor
iii) Insulator
iv) Superconductor

Description:
1) The forbidden energy gap is around 0.72eV
2) No forbidden energy gap between the valence band and conduction band.
3) Energy gap is up to $10^{-4}	ext{ eV}$
4) Energy gap is up to 7eV

Choose the correct option:

Accepted Answer

Option B: i-2, ii-1, iii-4, iv-3. i -> 2 (Conductor: Overlapping bands / 0 eV gap), ii -> 1 (Semiconductor: Germanium gap $\approx 0.72	ext{ eV}$ / Silicon $1.1	ext{ eV}$), iii -> 4 (Insulator: Large forbidden band gap $>5	ext{--}7	ext{ eV}$), iv -> 3 (Superconductor: BCS superconducting gap $\approx 10^{-4}	ext{ eV}$). Correct match: i-2, ii-1, iii-4, iv-3.

Question 51

Which parameter on the hysteresis loop is used to determine the magnetic permeability of a material?

Accepted Answer

Option A: Slope of the initial magnetization curve. Magnetic permeability ($\mu = B/H$) is determined by the Slope of the initial magnetization curve connecting the origin to the operating point.

Question 52

Which of the following changes will reduce the coercivity of a ferromagnetic material?

Accepted Answer

Option A: Increasing the temperature above the Curie point. Heating a ferromagnetic material above its Curie temperature ($T_c$) destroys spontaneous domain alignment, causing it to become paramagnetic with Zero Coercivity.

Question 53

Which of the following statements about hysteresis loss in a ferromagnetic material is/are correct?
1. Hysteresis loss is directly proportional to the frequency of the applied magnetic field in a dynamic system.
2. The area of the hysteresis loop determines the energy lost per cycle of magnetization.
3. Hysteresis loss is independent of temperature changes below the Curie temperature.
4. Materials with high coercivity generally exhibit higher hysteresis loss compared to those with low coercivity.
Choose the correct statements:

Accepted Answer

Option C: 1, 2 and 4. Statements 1, 2, and 4 are correct (Steinmetz formula: $P_h = \eta B_{\max}^{1.6} f V$; Loop area = energy loss/cycle; hard magnetic materials with high coercivity have high hysteresis loss). Statement 3 is false as permeability and loop area vary with temperature. Correct: 1, 2 and 4.

Question 54

The magnetic flux $\Phi(t)$ through a loop with a resistance of $R=2\ \Omega$ varies with time as $\Phi(t) = 4t^3 - 2t^2 + t	ext{ Wb}$. What is the induced current in the loop at $t=0.5	ext{ s}$?

Accepted Answer

Option A: 1.0 A. Induced EMF magnitude: $e = \left|\frac{d\Phi}{dt}ight| = 12t^2 - 4t + 1$. At $t = 0.5	ext{ s}$: $e = 12(0.5)^2 - 4(0.5) + 1 = 12(0.25) - 2 + 1 = 3 - 2 + 1 = 2	ext{ V}$. Induced current $I = \frac{e}{R} = \frac{2	ext{ V}}{2\ \Omega} = 1.0	ext{ A}$.

Question 55

Which of the following statements regarding Lenz's law is/are correct?
1. Lenz's law states that the direction of the induced current opposes the change in magnetic flux that causes it.
2. Lenz's law ensures the conservation of energy by requiring external work to oppose the induced magnetic effects.
3. The induced EMF creates a magnetic field that always reinforces the initial magnetic flux.
4. Lenz's law applies to all electromagnetic induction phenomena, including motional EMF.
Choose the correct statements:

Accepted Answer

Option D: 1, 2 and 4. Statements 1, 2, and 4 are correct (Statement 3 is false because induced fields oppose, never reinforce, the flux change). Correct: 1, 2 and 4.

Question 56

What happens if both the coil and the magnet are moved at the same speed in Faraday's experiment?

Accepted Answer

Option A: No change in magnetic flux and no induced EMF.. Faraday's Law requires relative motion between the magnetic field and the conductor. If both move at identical velocity, there is Zero relative motion, no change in magnetic flux linkage ($d\Phi/dt = 0$), and No Induced EMF.

Question 57

Match the items in List I with the correct descriptions in List II:
List - I:
i) Right hand thumb rule
ii) Fleming's left hand rule
iii) Fleming's right hand rule

List - II:
1) determines the direction of the force on a current-carrying conductor in a magnetic field
2) determines the direction of the induced current when a conductor is moving through a magnetic field
3) determines the direction of the magnetic field around a current-carrying conductor.

Choose the correct option:

Accepted Answer

Option D: i-3, ii-1, iii-2. i -> 3 (Right hand thumb rule: magnetic field around straight conductor), ii -> 1 (Fleming's left hand rule: force on conductor / motor rule), iii -> 2 (Fleming's right hand rule: induced current / generator rule). Correct match: i-3, ii-1, iii-2.

Question 58

Which of the following statements is correct regarding alternating current (AC)?

Accepted Answer

Option B: Electrons continuously alternate their direction of flow, either backward or forward. In Alternating Current (AC), electric charge carriers (electrons) periodically reverse their direction of motion in a sinusoidal back-and-forth oscillation.

Question 59

A galvanometer connected in an A.C. circuit does not show any deflection because

Accepted Answer

Option B: The mean value of alternating current is zero over a complete cycle.. A moving-coil galvanometer responds to the average (mean) current. Over any full symmetrical AC cycle, the mean current value is exactly zero ($\bar{I} = 0$), producing zero net torque.

Question 60

Which value of current is measured by A.C ammeter?

Accepted Answer

Option C: Root mean square value of current. Commercial AC ammeters (moving-iron, dynamometer, hot-wire) operate on heating or square-law magnetic effects and are calibrated to indicate the Root Mean Square (RMS / effective) value of current.

Question 61

What is the power dissipation in an A.C. circuit in which voltage and current is given by $E = 100\sin(\omega t + \pi/2)$ and $I = 2\sin(\omega t)$?

Accepted Answer

Option A: 0. The phase difference between voltage and current is $\phi = \pi/2 = 90^\circ$. Average real power dissipation is $P = V_{	ext{rms}} I_{	ext{rms}} \cos\phi = V_{	ext{rms}} I_{	ext{rms}} \cos(90^\circ) = 0	ext{ Watts}$.

Question 62

What are the effects of a low power factor?

Accepted Answer

Option D: All of the above.. Since $I = P / (V \cos\phi)$, a low power factor ($\cos\phi$) forces high line current, resulting in: higher $I^2 R$ copper losses, reduced system efficiency, larger voltage drops, and oversized equipment (All of the above).

Question 63

Which of the following statements is NOT correct regarding 3 phase system over single phase system?

Accepted Answer

Option D: A three-phase machine with the same rating takes up more space than a single-phase machine.. Statement D is incorrect: For identical power output and voltage ratings, a 3-phase machine is more compact, lighter, and takes up LESS space than a single-phase machine.

Question 64

What is the symbol for a controlled voltage source?

Accepted Answer

Option A: Diamond symbol with + and - terminals. In circuit schematics, a diamond-shaped two-terminal component with internal positive $(+)$ and negative $(-)$ polarity markings represents a Dependent / Controlled Voltage Source.

Electrician Grade-II2025

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JKSSB — Electrician Grade-II (2025)

Fill in the blank using a suitable article:While reading ______ biography of ______ influential leader, I discovered many lessons applicable to modern-day challenges.

Select the Synonyms of the word: Asperity

Select the Antonym of the word: Frolic

Which character is Charlie Chaplin best known for portraying?

What common theme is found in Charlie Chaplin's films such as The Kid, City Lights, and Modern Times?

Which of the following is the correct spelling of the word that means "to take hold of something suddenly"?

Which of the following is the correct spelling of the word that means "an inquiry to be answered or solved"?

Choose the pair of words that will make the sentence grammatically correct and meaningful.The teacher ______ the significance of incorporating practical experiences into the curriculum to ______ students' critical thinking skills.

Fill in the blank with the correct collective noun:The ______ of birds took off from the tree branches with a sudden flap of their wings and filled the air with a chorus of chirps.

Fill in the blank using a suitable relative pronoun.The park ______ we used to play as children has been renovated and looks beautiful now.

Fill in the blank using suitable homophones.While the car was ______ at the red light, I took out some ______ to write a quick note.

Fill in the blank with the appropriate tense in the sentence:I ______ my keys; I can't find them anywhere!

Which of the following pairs (x,y)(x, y)(x,y) satisfies both equations x⋅y2=1296x \cdot y^2 = 1296x⋅y2=1296 and y⋅x2=2304y \cdot x^2 = 2304y⋅x2=2304?

How many pairs of (x,y)(x, y)(x,y) satisfy the equations 3x2+4y2=2003x^2 + 4y^2 = 2003x2+4y2=200 and 5x2−6y2=2005x^2 - 6y^2 = 2005x2−6y2=200?

The average of five consecutive perfect squares is 27. What is the smallest square in the sequence?

Consider two numbers xxx and yyy, such that x>y>0x > y > 0x>y>0. The L.C.M. of these two numbers is 84 and their H.C.F. is 3. If the difference of the two numbers is 9, find the sum of these the two numbers.

A shopkeeper purchases certain number of pens at a cost price of Rs.10 per pen. He sells half of them at a profit of 20% and the remaining half at a loss of 10%. If his overall profit is Rs. 50, how many pens did he purchased?

A trader buys 80 kg of rice at Rs. 50 per kg. He mixes it with 20 kg of rice bought at Rs. 60 per kg. If he sells the mixture at Rs. 55 per kg, what is his total profit or loss?

Solve the expression 6×12−15÷3+46 \times 12 - 15 \div 3 + 46×12−15÷3+4

A sum of Rs. 720 is divided among P, Q, and R in the ratio 3:2:5. What is Q's share?

A girl was searching for a large perfect square number and guessed the number is 654321. However, it turned out not to be a perfect square. Find the square root of the perfect square number closest to the number 654321?

If the positive square root of [(3+5)(3−5)][(3+\sqrt{5})(3-\sqrt{5})][(3+5​)(3−5​)] is some number qqq. What will be the value of (q+25)(q+\sqrt{25})(q+25​)?

In a circuit with a 1 Ω1\ \Omega1 Ω resistor, what is the frequency of the direct current (DC) supplied by a 5V battery?

What is the role of a transformer in electrical circuits?

Which of the following statements is NOT correct regarding Kirchhoff's laws?

Which of the following statements correctly describes the functionality of resistors in electrical circuits?

What happens to the other bulbs in a series and parallel circuit if one bulb blows out?

What will be the least resistance of the circuit having 10 resistors of 2 Ω2\ \Omega2 Ω each?

Which of the following materials are suitable for earthing in electrical systems?

Which of the following is NOT a common method of earthing?

The amount of heat produced in an electric heater is NOT influenced by which of the following factors?

What is the primary function of the bimetallic strip in the thermostat of an automatic electric iron?

Which of the following is NOT true about the operation of a geyser?

What is the purpose of the agitator in a washing machine?

What fundamental principle governs the operation of a refrigerator and how does it effectively lower the temperature of the items stored within?

How is one lux related to foot-candles?

A hall measuring 15 m×10 m15\text{ m} \times 10\text{ m}15 m×10 m is illuminated by twenty 150-watt lamps. If the luminous efficiency of each lamp is 25 lumens per watt and the coefficient of utilisation is 0.50, what is the average illumination level on the floor?

Which of the following statements accurately describes fundamental principles or laws related to electromagnetism?

A long straight conductor carries a current of 10 A. Determine the magnetic field strength at a point 5 cm away from the conductor in air. Take μ0=4π×10−7 N/A2\mu_0 = 4\pi \times 10^{-7}\text{ N/A}^2μ0​=4π×10−7 N/A2

A solenoid is wound with a ferromagnetic core inserted inside it. What happens to the magnetic field inside the solenoid?

If the current in a solenoid flows in a clockwise direction when viewed from one end, what is the direction of the magnetic field at that end?

Which of the following statements is INCORRECT regarding the interaction between two current-carrying conductors?

Which parameter on the hysteresis loop is used to determine the magnetic permeability of a material?

Which of the following changes will reduce the coercivity of a ferromagnetic material?

The magnetic flux Φ(t)\Phi(t)Φ(t) through a loop with a resistance of R=2 ΩR=2\ \OmegaR=2 Ω varies with time as Φ(t)=4t3−2t2+t Wb\Phi(t) = 4t^3 - 2t^2 + t\text{ Wb}Φ(t)=4t3−2t2+t Wb. What is the induced current in the loop at t=0.5 st=0.5\text{ s}t=0.5 s?

What happens if both the coil and the magnet are moved at the same speed in Faraday's experiment?

Which of the following statements is correct regarding alternating current (AC)?

A galvanometer connected in an A.C. circuit does not show any deflection because

Which value of current is measured by A.C ammeter?

What is the power dissipation in an A.C. circuit in which voltage and current is given by E=100sin⁡(ωt+π/2)E = 100\sin(\omega t + \pi/2)E=100sin(ωt+π/2) and I=2sin⁡(ωt)I = 2\sin(\omega t)I=2sin(ωt)?

What are the effects of a low power factor?

Which of the following statements is NOT correct regarding 3 phase system over single phase system?

What is the symbol for a controlled voltage source?

Identify the symbol from the given pictograph: [Square box with diagonal arrow through a resistor zigzag inside]

How does grounding help prevent electrical fires?

Which of the following electrical safety measures is most effective in preventing electrical shocks and fires?

Which of the following statements is correct regarding electrical safety?

What does MCCB stand for?

What is the correct order of the first aid steps?

Which property of lubricants is important for effective performance of machinery under varying temperatures?

What is the primary function of a GFCI (Ground Fault Circuit Interrupter)?

What is the basic principle behind the operation of a DC generator?

Which of the following statements is NOT correct regarding commutator in DC generators?

What is the pole pitch if the DC generator's armature has 48 conductors and 4 poles?

A 4-pole DC generator with a flux per pole of 0.02 Wb, 100 armature conductors and a rotational speed of 1500 rpm operates with a simplex wave winding having two parallel paths. Calculate the induced EMF.

Which type of DC generator is most suitable for applications requiring large currents at low voltage?

When does a DC motor develop maximum mechanical power?

The speed of a DC motor is:

Where are shunt DC motors most commonly used?

How does temperature affect the operation of a series DC motor?

The power loss in the ideal transformer is:

Which of the following statements is correct about transformers?

Which of the following quantities remains constant in a transformer?

If the primary voltage is 200 V, the secondary voltage is 100 V, and the primary current is 5 A, what is the secondary current in an ideal transformer?

If a transformer operates at full load with an output power of 2000 W and total losses of 150 W, what is the efficiency of the transformer? (Rounded off to the nearest decimal place)

In transformers, why are windings placed close to each other?

Which of the following statements about Alternator is NOT correct?

Fill in the blank using a suitable article:
While reading biography of influential leader, I discovered many lessons applicable to modern-day challenges.

Choose the pair of words that will make the sentence grammatically correct and meaningful.
The teacher the significance of incorporating practical experiences into the curriculum to students' critical thinking skills.

Fill in the blank with the correct collective noun:
The ______ of birds took off from the tree branches with a sudden flap of their wings and filled the air with a chorus of chirps.

Fill in the blank using a suitable relative pronoun.
The park ______ we used to play as children has been renovated and looks beautiful now.

Fill in the blank using suitable homophones.
While the car was at the red light, I took out some to write a quick note.

Fill in the blank with the appropriate tense in the sentence:
I ______ my keys; I can't find them anywhere!

Which of the following pairs $(x, y)$ satisfies both equations $x \cdot y^2 = 1296$ and $y \cdot x^2 = 2304$ ?

How many pairs of $(x, y)$ satisfy the equations $3x^2 + 4y^2 = 200$ and $5x^2 - 6y^2 = 200$ ?

Consider two numbers $x$ and $y$ , such that $x > y > 0$ . The L.C.M. of these two numbers is 84 and their H.C.F. is 3. If the difference of the two numbers is 9, find the sum of these the two numbers.

Solve the expression $6 \times 12 - 15 \div 3 + 4$

If the positive square root of $[(3+\sqrt{5})(3-\sqrt{5})]$ is some number $q$ . What will be the value of $(q+\sqrt{25})$ ?

In a circuit with a $1\ \Omega$ resistor, what is the frequency of the direct current (DC) supplied by a 5V battery?

What will be the least resistance of the circuit having 10 resistors of $2\ \Omega$ each?

A hall measuring $15\text{ m} \times 10\text{ m}$ is illuminated by twenty 150-watt lamps. If the luminous efficiency of each lamp is 25 lumens per watt and the coefficient of utilisation is 0.50, what is the average illumination level on the floor?

A long straight conductor carries a current of 10 A. Determine the magnetic field strength at a point 5 cm away from the conductor in air. Take $\mu_0 = 4\pi \times 10^{-7}\text{ N/A}^2$

The magnetic flux $\Phi(t)$ through a loop with a resistance of $R=2\ \Omega$ varies with time as $\Phi(t) = 4t^3 - 2t^2 + t\text{ Wb}$ . What is the induced current in the loop at $t=0.5\text{ s}$ ?

What is the power dissipation in an A.C. circuit in which voltage and current is given by $E = 100\sin(\omega t + \pi/2)$ and $I = 2\sin(\omega t)$ ?