Measurements and Instrumentation - Engineering

Q1:

The dynamometer principle can be used for

A ammeter only

B voltmeter only

C wattmeter only

D ammeter, voltmeter and wattmeter

ANS:D - ammeter, voltmeter and wattmeter

Dynamometer principle can be used for ammeter, voltmeter and wattmeter. However it is generally used for wattmeters only.