Which motor is normally free from mechanical and magnetic vibrations ?

Related Mcqs:

In a capacitor start motor, the phase displacement between starting and running winding can be nearly__________?

A. 10° B. 30° C. 60° D. 90°...

The direction of rotation of an hysteresis motor is determined by____________?

A. interchanging the supply leads B. position of shaded pole with respect to main pole C. retentivity of the rotor material D. none of these...

A hysteresis motor works on the principle of__________?

A. hysteresis loss B. magnetisation of rotor C. eddy current loss D. electromagnetic induction...

Which type of load is offered by cranes and hoists ?

A. Gradually varying load B. Non-reversing, no-load start C. Reversing, light start D. Reversing, heavy start...

The motor used for the compressors is____________?

A. d.c. series motor B. shaded pole motor C. capacitor-start capacitor-run motor D. reluctance motor...