15.44: Transformers (Q15.6.6)

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A step-up transformer is designed so that the output of its secondary winding is 2000 V (rms) when the primary winding is connected to a 110-V (rms) line voltage.

(a) If there are 100 turns in the primary winding, how many turns are there in the secondary winding?

(b) If a resistor connected across the secondary winding draws an rms current of 0.75 A, what is the current in the primary winding?

Text Question

A step-up transformer is designed so that the output of its secondary winding is 2000 V (rms) when the primary winding is connected to a 110-V (rms) line voltage.

(a) If there are 100 turns in the primary winding, how many turns are there in the secondary winding?

(b) If a resistor connected across the secondary winding draws an rms current of 0.75 A, what is the current in the primary winding?

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