6. A transformer having 1000 primary turns is connected to a 250-V a.c. supply. For a secondary voltage of 400 V, the number of secondary turns should be :
(a) 1600 (b) 250 (c) 400 (d) 1250
Answer
Answer : (a)
Explanation
Explanation : No answer description available for this question. Let us discuss.
Transformer » Exercise - 18. If the primary power of an ideal transformer having a 2:1 voltage ratio is 100 W, the secondary power is : (a) 50 W (b) 75 W (c) 100 W (d) 200 W
Transformer » Exercise - 12. Which of the following is not a basic element of a transformer ? (a) core (b) primary winding (c) secondary winding (d) mutual flux
Transformer » Exercise - 13. In an ideal transformer : (a) windings have no resistance (b) core has no losses (c) core has infinite permeability (d) all of the above
Transformer » Exercise - 17. The primary and secondary induced e.m.fs. E1 and E2 in a two-winding transformer are always : (a) equal in magnitude (b) antiphase with each other (c) in-phase with each other (d) determined by load on transformer secondary
Transformer » Exercise - 18. If the primary power of an ideal transformer having a 2:1 voltage ratio is 100 W, the secondary power is : (a) 50 W (b) 75 W (c) 100 W (d) 200 W