need frequent starting and stopping of electric motors ?

Related Mcqs:

________________is preferred for automatic drives?

A. Squirrel cage induction motor B. Synchronous motors C. Ward-Leonard controlled D.C. motors D. Any of the above...

________________ motor is a constant speed motor?

A. Synchronous motor B. Schrage motor C. Induction motor D. Universal motor...

In jaw crushers a motor has to often start against ____________________ load?

A. heavy B. medium C. normal D. low...

In ______________ the speed can be varied by changing the position of brushes?

A. slip ring motor B. schrage motor C. induction motor D. repulsion motor...

In series motor which of the following methods can be used for changing the flux per pole ?

A. Tapped field control B. Diverter field control C. Series-parallel control D. Any of the above...