D.C. motor is to a drive a load which is almost nil for certain part of the load cycle and peak value for short duration. We will select this______________?

Related Mcqs:

In a D.C. shunt motor, speed is______________?

A. independent of armature current B. directly proportional to the armature current C. proportional to the square of the current D. inversely proportional to the armature current...

Which of the following law/rule can he used to determine the direction of rotation of D.C. motor ?

A. Lenz’s law B. Faraday’s law C. Coloumb’s law D. Fleming’s left-hand rule...

The armature torque of the D.C. shunt motor is proportional to____________?

A. field flux only B. armature current only C. both A. and B. D. none of the above...

Why are the D.C. motors preferred for traction applications ?

A. Torque and speed are inversely proportional to armature current B. Torque is proportional to armature current C. Torque is proportional to square root of armature current D. The speed is inversely proportional to the torque and the torque is proportional to square of armature current...

If a D.C. shunt motor is working at full load and if shunt field circuit suddenly opens____________?

A. this will make armature to take heavy current, possibly burning it B. this will result in excessive speed, possibly destroying armature due to excessive centrifugal stresses C. nothing will happen to motor D. motor will come to stop...