Question

The standardization of AC potentiometer is done by ____________

(a) Using a DC standard source and d’ Arsonval galvanometer

(b) Using AC standard sources and transfer instruments

(c) Using a standard AC voltage source

(d) Using a DC standard source and transfer instruments

The question was asked during an internship interview.

The query is from Advanced Problems on Indicating Instruments in portion Extension of Instrument Ranges of Electrical Measurements

Answer 1

Right option is (d) Using a DC standard source and transfer instruments

Easiest explanation: Standardization of AC potentiometer is done with the help of standard DC source i.e., a standard cell or a Zener source and a transfer instrument where transfer instrument may be an electrodynamometer or a thermocouple instrument.