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A step up transformer has transformation...

A step up transformer has transformation ratio of 3: 2. What is the voltage in secondary if voltage in primary coil is 30 V ?

A

45 V

B

15 V

C

90 V

D

300 V

Text Solution

Verified by Experts

The correct Answer is:
A
`epsilon_1=30V, epsilon_2`= ?
Transformation ratio `r=N_2/N_1=3/2`
`therefore epsilon_2/epsilon_1=N_2/N_1`
`therefore epsilon_2/30=3/2`
`therefore epsilon_2`=45 V
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