## SSC JE 10 Oct 2023 PAPER I Electrical Part 6

SSC JE 10 Oct 2023 PAPER I Electrical Part 6

Q.26 A heater of resistance 300Ω is connected to the main supply for 10 minutes. If the heat produced in the heater during this time is 18 J, then find the current through it.

1. 100 A

2. 0.01A

3. 10A

4. 0.10 A

Correct Option: 2

Q.27 The range of a moving iron ammeter can be extended by using a ___________.

1. shunt connected in series with an ammeter

2. multiplier connected in series with an ammeter

3. shunt connected in parallel with an ammeter

4. multiplier connected in parallel with an ammeter

Correct Option: 3

SSC JE 10 Oct 2023 PAPER I Electrical Part 6

Q.28 A power system consists of a coal-fired power plant of 800 MW with the availability factor of 0.8 and a wind farm of 400 MW with the availability factor of 0.5. Find the firm power of the system.

1. 1200 MW

2. 1800 MW

3. 840 MW

4. 400 MW

Correct Option: 3

Q.29 A series RLC circuit has the following parameter values: R = 5 Ω, L = 0.01 H, C = 100 μF, Voltage source (t) = 10 sin 1000t. What is the value of quality factor?

1. 1.11

2. 2

3. 2.51

4. 1

Correct Option: 2

SSC JE 10 Oct 2023 PAPER I Electrical Part 6

Q.32 Which of the following materials is used to construct the rotor of variable reluctance stepper motor with salient poles?

1. Ferromagnetic

2. Nonmagnetic

3. Paramagnetic

4. Diamagnetic

Correct Option: 1

SSC JE 10 Oct 2023 PAPER I Electrical Part 6

Q.33 If supports are at equal levels and tension in an overhead line is increased to two times, then ______________.

1. sag also increases to four times

2. sag decreases to half of the previous value

3. sag also increases to two times

4. sag becomes zero

Correct Option: 2

Q.34 Which of the following constitutes a valid reason for rejecting the lowest bid?

1. Unreasonable compensation is received

2. All of the options

3. Bidder has not signed

4. Lack of sufficient opposition

Correct Option: 2

Q.35 The conductor of an overhead transmission line has cross-sectional area of 2 cm2. If the specific gravity of the conductor material is 9.9 gm/cm3 and wind pressure is

1.5 kg/m length. The effective weight per metre of length (kg/m) of the conductor will be ____.

1. 3.48 kg/m

2. 5.48 kg/m

3. 4.48 kg/m

4. 2.48 kg/m

Correct Option: 4

SSC JE 10 Oct 2023 PAPER I Electrical Part 6

Q.36 Which of the following statements about the losses in a DC motor is INCORRECT?

1. Brush losses forms a part of mechanical losses.

2. Stray load losses are produced due to the distortion of the air gap flux due to armature reaction.

3. In series motors, the field ohmic loss forms a part of the armature circuit loss.

4. The no load rotational loss is made up of iron loss and mechanical loss.

Correct Option: 1

Q.37 Self-inductance does NOT depend on which of the following parameters?

1. Length of the conductor

2. Number of turns

3. Flux

4. Current flowing through the conductor

Correct Option: 1

Q.38 Three phases (R, Y and B) of a balanced AC circuit with the phase sequence RYB are connected in star. These three voltages are equal in magnitude and displaced from one another by ________ electrical angle.

1. 120°

2. 240°

3. 360°

4. 90°

Correct Option: 1

SSC JE 10 Oct 2023 PAPER I Electrical Part 6

Q.40 In commercial multimeters, to obtain the same deflection on corresponding DC and AC voltage ranges, the multiplier for AC range is to be ___________________.

1. kept the same

2. lowered proportionately

3. increased proportionately

4. dependent on the duration of testing

Correct Option: 2

SSC JE 10 Oct 2023 PAPER I Electrical Part 6

Q.42 The deflection produced by a half wave rectifier type AC voltmeter is how much times the deflection produced by the DC of equal magnitude voltage?

1. 0.45 times

2. 0.80 times

3. 0.40 times

4. 0.90 times

Correct Option: 1

Q.43 A moving coil instrument gives a full scale deflection of 10 mA when the potential difference across its terminals is 100 mV. Calculate the shunt resistance for full scale deflection which corresponds to 200 A?

1. 500.02 mΩ

2. 50.02 µΩ

3. 500.02 µΩ

4. 50.02 mΩ

Correct Option: 3

SSC JE 10 Oct 2023 PAPER I Electrical Part 6

Q.44 In a shaded-pole induction motor, in the core, when a __________ phase is applied, a/an _________ flux is generated.

1. single; constant

2. three; alternating

3. single; alternating

4. three; constant

Correct Option: 3

Q.45 Consider the following statements about damper winding used to start a synchronous motor and choose the suitable combination of correct choices.a) When a motor is overloaded it does not stop.b) Synchronous motor made self-starting by providing damper winding.c) Damper winding consists of short-circuited copper bars embedded in the face of the field poles.d) Since damper winding resistance is high so it takes a small current from the supply mains.

1. All a, b, c, d are true.

2. Only a, b and c are true.

3. Both b and d are true.

4. Both b and c are true.

Correct Option: 2

SSC JE 10 Oct 2023 PAPER I Electrical Part 6

Q.47 In the application of electrical and magnetic circuits, the heater element in an electric iron is manufactured by using ________.

1. tungsten

2. nichrome

3. iron

4. copper

Correct Option: 2

SSC JE 10 Oct 2023 PAPER I Electrical Part 6

Q.49 In case of magnetic circuits, the flux produced per unit area of the magnetic material, for every unit of the magnetising force applied to it, is called _________.

1. relative permeability

2. absolute permeability

3. MMF

4. EMF

Correct Option: 2

SSC JE 10 Oct 2023 PAPER I Electrical Part 6

Q.50 The voltage across the impedance ‘Z’ is 100∠15 V and the current through ‘Z’ is 20∠−45 A. Find the reactive power (Q).

1. Q = 1000 VAR

2. Q = 1732 VAR

3. Q = 600 VAR

4. Q = 6000 VAR

Correct Option: 2

SSC JE 10 Oct 2023 PAPER I Electrical Part 6

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