Q.

For a step-up transformer, the turns ratio is 3 and its efficiency is 0.75. The current flowing in the primary coil is 2 A and the voltage applied to it is 100 V. Then the voltage and the current flowing in the secondary coil are __________ respectively:

1 150 V, 1.5 A  
2 300 V, 0.5 A  
3 300 V, 1.5 A  
4 150 V, 0.5 A  

Ans.

(2)

Vs=300

Vpip×34=Vsis