Transmission And Distribution MCQ Questions & Answers

1

By which of the following a bus-bar is rated?

A) Current only B) Current and voltage C) Current, voltage and frequency D) Current, voltage, frequency and short time current

Discuss

Answer & Solution

Answer: Option D

Solution:

A bus-bar is rated based on current, voltage, frequency, and short time current.

Current: The maximum amount of current the bus-bar can carry without overheating.

Voltage: The highest voltage the bus-bar can handle safely without breakdown.

Frequency: The frequency of the alternating current (AC) the bus-bar can operate with.

Short time current: The maximum short-circuit current the bus-bar can withstand for a brief period without damage.

These ratings ensure the bus-bar operates safely and efficiently within its designed parameters.

2

Which of the following equipment, for regulating the voltage in distribution feeder, will be most economical?

A) Static condenser B) Synchronous condenser C) Tap changing transformer D) Booster transformer

Discuss

Answer & Solution

Answer: Option D

No explanation is given for this question. Let's Discuss on Board

3

The frequency of voltage generated, in case of generators, can be increased by

A) Using reactors B) Increasing the load C) Adjusting the governor D) Reducing the terminal voltage

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Answer & Solution

Answer: Option C

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4

In aluminium conductors, steel core is provided to

A) Compensate for skin effect B) Neutralise proximity effect C) Reduce line inductance D) Increase the tensile strength

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Answer & Solution

Answer: Option D

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5

Overhead system can be designed for operation up to

A) 11 kV B) 33 kV C) 66 kV D) 400 kV

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Answer & Solution

Answer: Option D

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6

Pin type insulators are generally not used for voltages beyond

A) 1 kV B) 11 kV C) 22 kV D) 33 kV

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Answer & Solution

Answer: Option D

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7

Which of the following is usually not the generating voltage?

A) 6.6 kV B) 8.8 kV C) 11 kV D) 13.2 kV

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Answer & Solution

Answer: Option B

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8

When the interconnector between two stations has large reactance

A) The transfer of power will take place with voltage fluctuation and noise B) The transfer of power will take place with least loss C) The stations will fall out of step because of large angular displacement between the stations D) None of the above

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Answer & Solution

Answer: Option C

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9

Distribution lines in India generally use

A) Wooden poles B) R.C.C. poles C) Steel towers D) None of the above

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Answer & Solution

Answer: Option B

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10

A 3-phase 4-wire system is commonly used on

A) Primary transmission B) Secondary transmission C) Primary distribution D) Secondary distribution

Discuss

Answer & Solution

Answer: Option D

No explanation is given for this question. Let's Discuss on Board

Transmission And Distribution MCQ Questions & Answers | Electrical Engineering