The shaft of an induction motor is made of_____________?

Related Mcqs:

Which of the following methods is easily applicable to control the speed of the squirrel-cage induction motor _____________?

A. By changing the number of stator poles B. Rotor rheostat control C. By operating two motors in cascade D. By injecting e.m.f. in the rotor circuit...

In three-phase squirrel-cage induction motors____________?

A. rotor conductor ends are short-circuited through slip rings B. rotor conductors are short-circuited through end rings C. rotor conductors are kept open D. rotor conductors are connected to insulation...

If a 3-phase supply is given to the stator and rotor is short circuited rotor will move___________?

A. in the opposite direction as the direction of the rotating field B. in the same direction as the direction of the field C. in any direction depending upon phase squence of supply...

In case of 3-phase induction motors, plugging means__________?

A. pulling the motor directly on line without a starter B. locking of rotor due to harmonics C. starting the motor on load which is more than the rated load D. interchanging two supply phases for quick stopping...

When /?2 is the rotor resistance, .X2 the rotor reactance at supply frequency and s the slip, then the condition for maximum torque under running conditions will be_____________?

A. sR2X2 = 1 B. sR2 = X2 C. R2 = sX2 D. R2 = s2X2...