Buchholz’s relay gives warning and protection against_________________?

Related Mcqs:

Efficiency of a power transformer is of the order of________________?

A. 100 per cent B. 98 per cent C. 50 per cent D. 25 per cent...

The thickness of laminations used in a transformer is usually____________?

A. 0.4 mm to 0.5 mm B. 4 mm to 5 mm C. 14 mm to 15 mm D. 25 mm to 40 mm...

If the supply frequency to the transformer is increased,”the iron loss will__________?

A. not change B. decrease C. increase D. any of the above...

For the parallel operation of single phase transformers it is necessary that they should have___________?

A. same efficiency B. same polarity C. same kVA rating D. same number of turns on the secondary side....

Which of the following statements regarding an idel single-phase transformer having a turn ratio of 1 : 2 and drawing a current of 10 A from 200 V A.C. supply is incorrect?

A. Its secondary current is 5 A B. Its secondary voltage is 400 V C. Its rating is 2 kVA D. Its secondary current is 20 A E. It is a step-up transformer...