Question

What is the role of a multiplier?

(a) it multiplies the voltage and current

(b) divides the alternating voltage and current

(c) supplies instantaneous voltage and current

(d) multiplies alternating voltage and current

This question was addressed to me by my college director while I was bunking the class.

This interesting question is from Electronic Energy Meter, Adjustments in Single Phase Energy meters in section Measurement of Power and Related Parameters of Electrical Measurements

Answer 1

The correct choice is (d) multiplies alternating voltage and current

Explanation: A multiplier basically performs the multiplication of the alternating voltage and the current. Multiplier also provides the current in the form of instantaneous power to a voltage controlled oscillator.