The purpose of providing iron core in a step-up transformer is?

Related Mcqs:

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

A. friction and windage losses B. copper losses C. hysteresis and eddy current losses D. none of the above...

In a transformer the tappings are generally provided on_____________?

A. primary side B. secondary side C. low voltage side D. high voltage side...

The full-load copper loss of a trans¬former is 1600 W. At half-load, the copper loss will be___________?

A. 6400 W B. 1600 W C. 800 W D. 400 W...

The efficiency of a transformer, under heavy loads, is comparatively low because_______________?

A. copper loss becomes high in proportion to the output B. iron loss is increased considerably C. voltage drop both in primary and secondary becomes large D. secondary output is much less as compared to primary input...

Which of the following protection is normally not provided on small distribution transformers ?

A. Overfluxing protection B. Buchholz relay C. Overcurrent protection D. All of the above...