Search Previous Year Questions

Find real questions from previous competitive exam papers with answers and solutions.

Leave the keyword blank to browse saved questions for your selected exam, newest papers first. Add a keyword, year or topic to narrow the results.

Browse complete papers
Showing 10 question(s)
Clear

Question 41

SSC JE EE 2026• General Engineering

When applying "Dynamic Braking" (Rheostatic Braking) to a 3-phase induction motor, which connection change is made?

  1. AOption (a)

    The phase sequence of the supply is reversed

  2. BOption (b)

    The stator is disconnected from AC and connected to a DC source

  3. COption (c)

    Resistance is added to the rotor circuit while keeping AC supply

  4. DOption (d)

    One phase of the stator supply is opened

View answer & explanation

Correct answer

Answer: (a)A.

The phase sequence of the supply is reversed

Explanation not yet available.

Question 42

SSC JE EE 2026• General Engineering

A double-cage induction motor is designed to achieve:

  1. AOption (a)

    High efficiency and low slip

  2. BOption (b)

    High starting torque and low starting current

  3. COption (c)

    Low starting torque and high starting current

  4. DOption (d)

    Constant speed operation

View answer & explanation

Correct answer

Answer: (a)A.

High efficiency and low slip

Explanation not yet available.

Question 43

SSC JE EE 2026• General Engineering

It is never advisable to start a DC series motor without a mechanical load on its shaft because:

  1. AOption (a)

    The speed will become dangerously high

  2. BOption (b)

    It will draw excessive current

  3. COption (c)

    The back EMF will be zero

  4. DOption (d)

    The motor will not start

View answer & explanation

Correct answer

Answer: (a)A.

The speed will become dangerously high

Explanation not yet available.

Question 44

SSC JE EE 2026• General Engineering

Which type of DC generator is most suitable for electric arc welding applications?

  1. AOption (a)

    DC Shunt Generator

  2. BOption (b)

    DC Series Generator

  3. COption (c)

    Over-compound Generator

  4. DOption (d)

    Differential Compound Generator

View answer & explanation

Correct answer

Answer: (a)A.

DC Shunt Generator

Explanation not yet available.

Question 45

SSC JE EE 2026• General Engineering

In a DC machine, the effect of armature reaction causes the Magnetic Neutral Axis (MNA) to shift:

  1. AOption (a)

    In the direction of rotation for a generator and opposite to rotation for a motor

  2. BOption (b)

    Opposite to the direction of rotation for a generator and in the direction for a motor

  3. COption (c)

    In the direction of rotation for both

  4. DOption (d)

    Perpendicular to the Geometrical Neutral Axis (GNA) for both

View answer & explanation

Correct answer

Answer: (a)A.

In the direction of rotation for a generator and opposite to rotation for a motor

Explanation not yet available.

Question 46

SSC JE EE 2026• General Engineering

During the commutation process in a DC machine, the "Reactance Voltage" responsible for sparking is produced due to:

  1. AOption (a)

    The resistance of the brush contact

  2. BOption (b)

    The self-inductance of the coil undergoing commutation

  3. COption (c)

    The back EMF of the motor

  4. DOption (d)

    The friction between commutator and brush

View answer & explanation

Correct answer

Answer: (a)A.

The resistance of the brush contact

Explanation not yet available.

Question 47

SSC JE EE 2026• General Engineering

When the series field flux in a DC compound generator opposes the shunt field flux, the device is referred to as:

  1. AOption (a)

    Cumulatively Compound

  2. BOption (b)

    Differentially Compound

  3. COption (c)

    Series Generator

  4. DOption (d)

    Shunt Generator

View answer & explanation

Correct answer

Answer: (a)A.

Cumulatively Compound

Explanation not yet available.

Question 48

SSC JE EE 2026• General Engineering

The average power absorbed by an impedence \( Z = 30 - j70\Omega \) when a voltage \( V = 120\angle 0^\circ \) is applied across it is ________.

  1. AOption (a)

    189.12W

  2. BOption (b)

    94.56W

  3. COption (c)

    37.24W

  4. DOption (d)

    86.91W

View answer & explanation

Correct answer

Answer: (a)A.

189.12W

Explanation not yet available.

Question 49

SSC JE EE 2026• General Engineering

The rms value of the current waveform shown in image is ________.

  1. AOption (a)

    10A

  2. BOption (b)

    8.165A

  3. COption (c)

    5.77A

  4. DOption (d)

    5A

View answer & explanation

Correct answer

Answer: (a)A.

10A

Explanation not yet available.

Question 50

SSC JE EE 2026• General Engineering

The rms value of the current waveform shown in figure is ________.

  1. AOption (a)

    2A

  2. BOption (b)

    2.30A

  3. COption (c)

    4A

  4. DOption (d)

    2.82A

View answer & explanation

Correct answer

Answer: (a)A.

2A

Explanation not yet available.
Page 5