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Tap Changing Transformers - Transformers MCQs

Tap Changing Transformers MCQs : This section focuses on the "Tap Changing Transformers" in Transformers. These Multiple Choice Questions (MCQs) should be practiced to improve the Transformers skills required for various interviews (campus interview, walk-in interview, company interview), placement, entrance exam and other competitive examinations.

Question 1

___________ change of voltage is affected by changing the numbers of turns of the transformer provided with taps.

A. Turn-changing Transformers
B. Voltage-changing Transformers
C. Tap-changing Transformers
D. Open-changing Transformers

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Question 2

How many types of tap-changing transformers?

A. 1
B. 2
C. 3
D. 4

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Question 3

In which type, the transformer is disconnected from the main supply when the tap setting is to be changed?

A. Off-load tap changing transformer
B. On-load tap changing transformer
C. closed-load tap changing transformer
D. open-load tap changing transformer

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Question 4

In Off-load tap-changing transformer, The tap setting is usually done automatically.

C. Can be true or false
D. Can not say

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Question 5

While tapping, Which essential conditions need to be fulfilled?

A. The load circuit should not be broken to avoid arcing and prevent the damage of contacts
B. No parts of the windings should be short–circuited while adjusting the tap
C. Both A and B
D. None of the above

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Question 6

Common range pf tap changing is __________

A. 0.02
B. 0.03
C. 0.04
D. 0.05

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Question 7

Negative tapping means ________________

A. less turns than positive tap
B. less turns than principal tap
C. less turns than zero tap
D. more turns than principal tap

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Question 8

With the introduction of on-load tap changers, operating efficiency ___________

A. stays constant
B. depends on the application
C. decreases
D. improves

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Question 9

During the tap change, only half of the reactance which limits the current is connected in the circuit.

C. Can be true or false
D. Can not say

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Question 10

Which of the following is/are part/s of tap changing circuit?

A. Automatic voltage regulator
B. A time delay relay
C. AVR, time delay relay, compounding elements
D. Compounding elements

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