Question

A step-up transformer has transformation ratio of 3 : 2. What is the voltage in secondary, if voltage in primary is 30 V?(a) 45 V(b) 15 V(c) 90 V(d) 300 V

Answer 1

Hola User

a) 45 V

Thanks

Answer 2

Answer:

(a) 45 V

Explanation:

Voltage of primary = 30V (Given)

Transformation ratio = 3:2 (Given)

The primary transformer will have less turns as compared to the secondary. Thus, ratio of number of turns -

primary : secondary - 3:2

Np/Ns = Vp/Vs

2/3 = 30/Vs

2Vs = 90

Vs = 90/2

Vs = 45

Thus, the voltage in secondary transformer is 45V