GPSSB Additional Assistant Engineer (Electrical) 2026 CBRT – Technical Section

Question 1

Damper windings in alternators help prevent which operational issue during sudden load changes?

Accepted Answer

Hunting

Answer

Short-circuit

Answer

Overheating

Answer

Voltage drop

Question 2

What does the Gujarat policy state about residential solar projects and consumer sanctioned load?

Accepted Answer

Solar projects are allowed irrespective of sanctioned load

Answer

Projects are limited to consumers with specific sanctioned load

Answer

Only consumers with high load can install solar projects

Answer

Solar projects require special approval for low loads

Question 3

To prevent an alternator from operating in motor mode due to prime mover failure, a/an __________ relay is used.

Accepted Answer

Reverse Power

Answer

Earth Fault

Answer

Overcurrent

Answer

Differential

Question 4

Which type of wire is typically used to connect a ceiling fan to the power supply in residential buildings?

Accepted Answer

Flexible copper wire

Answer

Twisted pair wire

Answer

Aluminum armored cable

Answer

Coaxial cable

Question 5

Voltage magnification factor of a series resonance circuit is:

Accepted Answer

Q = ωL/R

Answer

Q = ωCR

Answer

Q = ωR/L

Answer

Q = ωC/R

Question 6

Which of the following statements is not true about a vertical amplifier?

Accepted Answer

Sensitivity is inversely proportional to the gain of the vertical amplifier.

Answer

When the gain of the vertical amplifier increases sensitivity of the oscilloscope increases, which allows us to observe small amplitude signals.

Answer

The sensitivity of the oscilloscope is directly proportional to the gain of the vertical amplifier.

Answer

The vertical amplifier is the principal factor in determining the sensitivity and bandwidth.

Question 7

A balanced delta-connected load of (4+j3) Ω per phase is connected to a balanced three-phase 440V supply. The phase current is 10A. Find the total active power.

Accepted Answer

√3×440×17.32×0.8 W

Answer

3×440×17.32×0.6 W

Answer

√3×440×17.32×0.6 W

Answer

3×440×17.32×0.8 W

Question 8

For a power inverter circuit that demands fast switching and high efficiency, which MOSFET type would be most effective?

Accepted Answer

N-channel enhancement mode MOSFET

Answer

N-channel depletion mode MOSFET

Answer

P-channel enhancement mode MOSFET

Answer

P-channel depletion mode MOSFET

Question 9

Which of the following systems is not a part of single phase energy meter?

Accepted Answer

Damping System

Answer

Braking System

Answer

Driving System

Answer

Moving System

Question 10

The transformation ratio of an isolation transformer is usually:

Accepted Answer

1 : 1

Answer

1 : 10

Answer

2 : 1

Answer

10 : 1

Electrical Machines	2
Network Theory	2
Measurements & Instruments	2
Energy Management & Electricity Laws	1
Switchgear & Protection	1
Installation, Earthing & Safety	1
Power Electronics	1

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