In D.C. machines fractional pitch winding is used__________?

Related Mcqs:

A D.C. series motor is that which______________?

A. has its field winding consisting of thick wire and less turns B. has a poor torque C. can be started easily without load D. has almost constant speed...

The power mentioned on the name plate of an electric motor indicates____________?

A. the power drawn in kW B. the power drawn in kVA C. the gross power D. the output power available at the shaft...

If I2 be the armature current, then speed of a D.C. shunt motor is_______________?

A. independent of Ia B. proportional to la C. varies as (Ia) D. varies as la...

In Ward-Leonard control the lower limit of speed is imposed by________?

A. residual magnetism of the generator B. core losses of motor C. mechanical losses of motor and generator together D. all of the above...

One D.C. motor drives another D.C. motor. The second D.C. motor when excited and driven_______________?

A. runs as a generator B. does not run as a generator C. also runs as a motor comes to stop after sometime...