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___________?

Related Mcqs:

1. In a transformer the resistance between its primary and secondary is____________?

   A. zero B. 1 ohm C. 1000 ohms D. infinite...

2. In a transformer the resistance between its primary and secondary should be_____________?

   A. zero B. 10 Q C. 1000 Q D. infinity...

3. The voltage transformation ratio of a transformer is equal to the ratio of_______________?

   A. primary turns to secondary turns B. secondary current to primary current C. secondary induced e.m.f. to primary induced e.m.f D. secondary terminal voltage to primary applied voltage...

4. Which of the following is the main advantage of an auto-transformer over a two winding transformer?

   A. Hysteresis losses are reduced B. Saving in winding material C. Copper losses are negligible D. Eddy losses are totally eliminated...

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

   A. approximately equal to one B. less than one C. great than one D. none of the above...

6. An ideal transformer has infinite values of primary and secondary inductances. The statement is______________?

   A. true B. false...

7. The secondary winding of which of the following transformers is always kept closed?

   A. Step-up transformer B. Step-down transformer C. Potential transformer D. Current transformer...

8. In the transformer following winding has got more cross-sectional area______________?

   A. Low voltage winding B. High voltage winding C. Primary winding D. Secondary winding...

9. Which winding in a transformer has more number of turns ?

   A. Low voltage winding B. High voltage winding C. Primary winding D. Secondary winding...

10. Which type of winding is used in 3 phase shell-type transformer?

    A. Circular type B. Sandwich type C. Cylindrical type D. Rectangular type...