yuhomie yuhomie

04-08-2014
Physics

Answered

A transformer has a primary coil with 600 turns and a secondary coil

with 300 turns. If the output voltage is 320 volts, what is the input

voltage?
A. 8 volts

B. 150 volts

C. 640 volts

D. 600 volts

Verified Answer :

05-08-2014

Number of turns in the primary Np = 600
Number of turns in the secondary Ns = 300
Output voltage Es = 320 volts
Input voltage Ep = ?
Assuming the transformer to be ideal,
Np/Ns = Ep/Es
Ep/Es = 600/300 = 2
Ep = 320*2 = 640 volts

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