Gas is usually not liberated due to dissociation of transformer oil unless the oil temperature exceeds?

Related Mcqs:

No-load current in a transformer________________?

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

Helical coils can be used on___________?

A. low voltage side of high kVA transformers B. high frequency transformers C. high voltage side of small capacity transformers D. high voltage side of high kVA rating transformers...

A transformer oil must be free from________________?

A. sludge B. odour C. gases D. moisture...

When secondary of a current transformer is open-circuited its iron core will be__________?

A. hot because of heavy iron losses taking place in it due to high flux density B. hot because primary will carry heavy current C. cool as there is no secondary current D. none of above will happen...

In a transformer the resistance between its primary and secondary should be_____________?

A. zero B. 10 Q C. 1000 Q D. infinity...