An ideal 50 kVA transformer has a voltage ratio of 1000/200 V. If the secondary winding delivers a current of 200 A, what is the current in the primary winding?

If the no-load voltage of a generator is 210 V and its full-load rated voltage is 200 V, what is its voltage regulation percentage?

Calculate the number of poles of a synchronous motor operating at a synchronous speed of 1200 rpm with a supply frequency of 60 Hz.