What is Transformer?

A)
Transformers are used only for low alternating voltage
B)
Transformer is a device used to convert alternating current to direct current
C)
Transformer is a device used to convert low alternating voltage to a high alternating voltage
D)
Transformer is a device used to convert low alternating current to a high alternating current

Correct Answer : Option (C) :   Transformer is a device used to convert low alternating voltage to a high alternating voltage

Explanation : A Transformer is a device used to convert low alternating voltage to a high alternating voltage and vice versa. Transformers are based on the phenomena of mutual induction. A transformer consists of a soft iron coil with two coils wound around it which are not connected to one another.

Recently Updated in Transformers Questions
Which of the following parts of a transformer is visible from outside?
A)
Core
B)
Bushings
C)
Primary winding
D)
Secondary winding

Correct Answer :   Bushings

A no-load test is performed on a transformer to determine
A)
efficiency
B)
copper loss
C)
magnetising current
D)
magnetising current and loss

Correct Answer :   magnetising current and loss

Natural oil cooling is used for transformers up to a rating of
A)
250 kVA
B)
500 kVA
C)
1000 kVA
D)
3000 kVA

Correct Answer :   3000 kVA

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