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A power transmission line feeds input po...

A power transmission line feeds input power a 3300 V to a step down transformer with it primary windings having 2000 turns. Wha should be the number of turns in th secondary in order to get output power a 330 V ?

A

400

B

200

C

33

D

40

Text Solution

Verified by Experts

The correct Answer is:
B
`V_P`=3300 V
`N_P`= 2000
`V_S`=330 V
Transformation ratio ,
`gamma=V_S/V_P` and `gamma=N_S/N_P`
`therefore V_S/V_P=N_S/N_P`
`therefore N_S=(V_SN_P)/V_P`= 200
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