Auto-transformer makes effective saving on copper and copper losses, when its transformation ratio is_________________?

Related Mcqs:

The dielectric strength of transformer oil is expected to be______________?

A. lkV B. 33 kV C. 100 kV D. 330 kV...

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...

Distribution transformers are generally designed for maximum efficiency around________________?

A. 90% load B. zero load C. 25% load D. 50% load...

If a transformer is continuously operated the maximum temperature rise will occur in_______________?

A. core B. windings C. tank D. any of the above...

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...