Which of the following does not change in a transformer ?

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...

If R2 is the resistance of secondary winding of the transformer and K is the transformation ratio then the equivalent secondary resistance referred to primary will be___________?

A. R2/VK B. R2IK2 C. R22!K2 D. R22/K...

Power transformers are generally designed to have maximum efficiency around__________?

A. no-load B. half-load C. near full-load D. 10% overload...

Which of the following is not a routine test on transformers ?

A. Core insulation voltage test B. Impedance test C. Radio interference test D. Polarity test...

The transformer oil should have _______ volatility and _______ viscosity?

A. low,low B. high,high C. low,high D. high,low...