Question

a step down transformer at the end of transmission line reduce the voltage from 2400 volts to 1200 volts the primary winding has 400 turns how many turns have the secondary Coil​

Answer 1

We have,

• Voltage in primary winding = 2400 v
• Voltage in secondary winding = 1200 v
• No. of turns in primary winding = 400

We know that, the relation between primary and secondary voltage - turn is,

• Ns/Np = Vs/Vp

Put the value from the question,

= Ns/Np = Vs/Vp

= Ns/400 = 1200/2400

= Ns = 1/2 × 400

= Ns = 200

Therefore,the no. of turns in secondary coil are 200.

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