The ‘cogging’ of an induction motor can be avoided by____________?

Related Mcqs:

In medium sized induction motors, the slip is generally around___________?

A. 0.04% B. 0.4% C. 4% D. 14%...

In a three-phase induction motor, the number of poles in the rotor winding is always__________?

A. zero B. more than the number of poles in stator C. less than number of poles in stator D. equal to number of poles in stator...

The speed characteristics of an induction motor closely resemble the speedload characteristics of which of the following machines?

A. D.C. series motor B. D.C. shunt motor C. universal motor D. none of the above...

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...