Answer : To measure a resistance with the help of a potentiometer it is not necessary to standardise the potentiometer.
Answer : For measuring a very high resistance we should use Meggar.
Answer : The stator of phase shifting transformer for use in conjunction with an A.C. potentiometer usually has a two-phase winding.
Answer : Basically a potentiometer is a device for comparing two voltages.
Answer : A potentiometer may be used for measurement of resistance, measurement of current, calibration of ammeter, calibration of voltmeter.