Question

during slip test it would be observed
that as swing of ammeter is wide
(1) swing of voltmeter is wide​

Answer 1

During slip test it will be observed that the swing of ammeter is wide and not of swing of voltmeter as it is relatively small.

• The slip test is used to evaluate the ratio of xd / xq, the ratio of direct axis to quadrature axis reaction.
• It is achieved essentially by spinning the alternator rotor with an external prime mover while the alternator rotor winding is held open.
• The impedance during the slip test is small in the case of an ammeter, so that the voltage drop will be smaller and the current will be greater.