If the supply voltage for a D.C. motor is increased, which of the following will decrease ?

Related Mcqs:

What will happen if the back e.m.f. of a D.C. motor vanishes suddenly?

A. The motor will stop B. The motor will continue to run C. The armature may burn D. The motor will run noisy...

The current drawn by the armature of D.C. motor is directly proportional to__________?

A. the torque required B. the speed of the motor C. the voltage across the terminals D. none of the above...

In D.C. machines the residual magnetism is of the order of_________________?

A. 2 to 3 per cent B. 10 to 15 per cent C. 20 to 25 per cent D. 50 to 75 per cent...

Which motor should not be started on no-load ?

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

In a DC motor the inter-pole winding is connected in________________?

A. series with field winding B. series speed armature winding C. parallel big field winding D. parallel with armature winding...