No-load current in a transformer

A)
leads the voltage by about 15°
B)
leads the voltage by about 75°
C)
lags behind the voltage by about 15°
D)
lags behind the voltage by about 75°

Correct Answer : Option (D) :   lags behind the voltage by about 75°

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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