In a given transformer for given applied voltage, losses which remain constant irrespective of load changes are______________?

Related Mcqs:

A transformer cannot raise or lower the voltage of a D.C. supply because_______________?

A. there is no need to change the D.C. voltage B. a D.C. circuit has more losses C. Faraday’s laws of electromagnetic induction are not valid since the rate of change of flux is zero D. none of the above...

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...

An ideal transformer will have maximum efficiency at a load such that?

A. copper loss = iron loss B. copper loss iron loss D. none of the above...

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...

Iron loss of a transformer can be measured by____________?

A. low power factor wattmeter B. unity power factor wattmeter C. frequency meter D. any type of wattmeter...