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 - 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 - 16. 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