SSC JE 9 Oct 2023 PAPER I Electrical Part 6

Q.26 For an AC circuit, the voltage and the current are given as V = (100 + j10) V and I = (20 − j10) A, respectively. The active power of the circuit is:

1. P = 1000 W
2. P = 1500 W
3. P = 1800 W
4. P = 1900 W

Correct Option: 4

Q.29 The following test results were obtained from a 6 kVA, 200/400 V, 50 Hz single-phase transformer: Data for no-load low-voltage side: 200 V, 0.5 A and 50 W. At normal voltage and frequency, determine the magnetising current of the transformer.

1. 0.236 A
2. 0.433 A
3. 0 A
4. 0.569 A

Correct Option: 2

SSC JE 9 Oct 2023 PAPER I Electrical Part 6

Q.30 Calculate the apparent power of a circuit if the circuit has a power factor of 0.8 and the active power of the circuit is 40 W.

1. 75 VA
2. 50 VA
3. 40 VA
4. 100 VA

Correct Option: 2

Q.31 Which of the following statements is accurate regarding wires and cables?

1. Cables are made by stranding together many wires.
2. Wires are made by stranding together many cables.
3. Wires and cables are never insulated.
4. Wires and cables are the same thing.

Correct Option: 1

Q.32 In the split-phase induction motor, both main winding and starting winding are displaced _________ in space.

1. 360 degrees
2. 180 degrees
3. 90 degrees
4. 270 degrees

Correct Option: 3

SSC JE 9 Oct 2023 PAPER I Electrical Part 6

Q.33 The split-phase induction motor is NOT used for drives that require more than _________.

1. 1 KW
2. 10 KW
3. 1000 KW
4. 100 KW

Correct Option: 1

Q.35 Which of the following connections is used as distribution transformer?

1. Star-star
2. Delta-star
3. Star-delta
4. Delta-delta

Correct Option: 2

SSC JE 9 Oct 2023 PAPER I Electrical Part 6

Q.37 Why is the hold-on coil connected in series with the shunt field in a three-point starter of a DC motor?

1. To disconnect the supply when the motor is in normal operation
2. To provide the lubricant for the motor
3. To prevent the motor from running away in case of an open-field circuit
4. To control the speed of the motor

Correct Option: 3

Q.38 If V-I characteristics is plotted for forward current by increasing the temperature, it has been seen that plot for V-I characteristics _________ as temperature increases.

1. is moved down
2. does not change
3. is moved to the left
4. is moved to the right

Correct Option: 3

SSC JE 9 Oct 2023 PAPER I Electrical Part 6

Q.39 Which of the following should NOT be prioritised when making a comparison statement for the tender evaluation sheet/format?

1. Supplier’s name
2. Conditions of supply
3. Cost of packaging and shipping
4. Confidence that faulty goods will be replaced

Correct Option: 1

Q.40 Which of the following is the correct interrelation between the variables x1 and x2 used in the expression to calculate the sag in a transmission conductor with different heights, where , variables x1 and x2 represent the horizontal distances of support at lower and higher levels from the lowest point of the conductor, respectively?

1. x1 >> x2
2. x1 > x2
3. x1 = x2
4. x1 < x2

Correct Option: 4

Q.41 In electromagnetic induction, the energy is supplied to the circuit and a part of this supplied energy is spent to meet ____.

1. eddy current loss
2. hysteresis loss
3. I2R losses
4. iron losses

Correct Option: 3

SSC JE 9 Oct 2023 PAPER I Electrical Part 6

Q.42 The phasing out test on a three-phase transformer is carried out to find _______________.

1. primary winding belonging to the same phase
2. primary and secondary windings belonging to a different phase
3. secondary winding belonging to a different phase
4. primary and secondary windings belonging to the same phase

Correct Option: 4

Q.43 At the leading power factor, the armature reaction of an alternator is:

1. partially cross magnetising and partially demagnetising
2. partially cross magnetising and partially magnetising
3. wholly magnetising
4. wholly demagnetising

Correct Option: 2

Q.44 Find the electrical energy consumed in 10Ω resistance when 100 mA current flows for 2 minutes.

1. 120 J
2. 100 J
3. 12 J
4. 1200 J

Correct Option: 3

SSC JE 9 Oct 2023 PAPER I Electrical Part 6

Q.45 Which of the following statements accurately describes voltage drop due to armature leakage reactance in an alternator on load?

1. The voltage drop due to armature leakage reactance decreases with increasing load.
2. The voltage drop due to armature leakage reactance increases with increasing load.
3. The voltage drop due to armature leakage reactance is independent of the load.
4. The voltage drop due to armature leakage reactance only occurs when the alternator is operating at no load.

Correct Option: 2

Q.46 Which of the following statements is FALSE in association with synchronous motor applications?

1. Voltage regulation can be done using synchronous motor.
2. Synchronous motor is used in constant load drive application.
3. Synchronous motor is expensive in low power output application.
4. Synchronous motor is highly suitable for low power output below 40 kW in medium speed range.

Correct Option: 4

Q.47 Which of the following types of steel is used to make the core of a transformer?

1. Silicon steel
2. High-carbon steel
3. Stainless steel
4. Tool steel

Correct Option: 1

SSC JE 9 Oct 2023 PAPER I Electrical Part 6

Q.48 In an electrical network, if the quantity of a source is controlled by another voltage or current present in the circuit, such a source is called _______.

1. ideal source
2. dependent source
3. non-ideal source
4. independent source

Correct Option: 2