The condition for maximum power in case of D.C. motor is______________?

Related Mcqs:

The direction of rotation of a D.C. series motor can be changed by___________?

A. interchanging supply terminals B. interchanging field terminals C. either of A. and B. above D. None of the above...

A direct on line starter is used: for starting motors___________?

A. up to 5 H.P B. up to 10 H.P C. up to 15 H.P D. up to 20 H.P...

In a D.C. series motor, if the armature current is reduced by 50%, the torque of the motor will be equal to

A. 100% of the previous value B. 50% of the previous value C. 25% of the previous value D. 10% of the previous value E. none of the above...

If a D.C. motor designed for 40°C ambient temperature is to be used for 50°C ambient temperature, then the motor_____________?

A. of lower H.P. should be selected B. of higher H.P. should be selected C. can be used for 50°C ambient temperature also D. is to be derated by a factor recommended by manufacturer and select the next higher H.P. 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...