It is required to measure the true open circuit e.m.f. of a battery. The best device is_____________?

Related Mcqs:

Most common form of A.C. meters met with in every day domestic and industrial installations are______________?

A. mercury motor meters B. commutator motor meters C. induction type single phase energy meters D. all of the above...

The chemical effect of current is used in ______________?

A. D.C. ammeter hour meter B. D.C. ammeter C. D.C. energy meter D. none of the above...

The adjustment of position of shading bands, in an energy meter is done to provide______________?

A. friction compensation B. creep compensation C. braking torque D. none of the above...

A Weston synchronoscope is a________________?

A. moving coil instrument B. moving iron instrument C. dynamometer instrument D. none of the above...

The principle on which vector voltmeter is based is_____________?

A. that it works on the principle of complex variation B. that it measures the response of linear ramp voltage C. same as digital meter D. that it measures the amplitude of a single at two points and at the same time measures their phase difference...