Hopkinson’s test on D.C. machines is conducted at_______________?

Related Mcqs:

When two D.C. series motors are connected in parallel, the resultant speed is____________?

A. more than the normal speed B. loss than the normal speed C. normal speed D. zero...

A three point starter is considered suitable for______________?

A. shunt motors B. shunt as well as compound motors C. shunt, compound and series motors D. all D.C. motors...

The mechanical power developed by a shunt motor will be maximum when the ratio of back e.m.f. to applied voltage is______________?

A. 4.0 B. 2.0 C. 1.0 D. 0.5...

Which motor should not be started on no-load ?

A. Series motor B. Shunt motor C. Cumulatively compounded motor D. Differentially compounded motor...

Which D.C. motor has got maximum self relieving property ?

A. Series motor B. Shunt motor C. Cumulatively compounded motor D. Differentially compounded motor...