A double squirrel-cage induction motor has? Mark as favorite Copy Link two rotors moving in opposite direction two parallel windings in stator parallel windings in rotor two series windings in stator Check Answer
An induction motor with 1000 r.p.m. speed will have? Mark as favorite Copy Link 8 poles 6 poles 4 poles 2 poles Check Answer
Slip rings for induction motors are made of? Mark as favorite Copy Link phosphor bronze aluminium carbon cobalt steel Check Answer
A 3-phase induction motor is running at a load of the rated torque. What happens when one of the outer mains is interrupted while the motor is running? Mark as favorite Copy Link The motor keeps on running and the current drawn does not change The motor keeps on running but draws more current The motor stops immediately The motor stops after a few seconds Check Answer
The starting torque of a squirrel-cage induction motor is? Mark as favorite Copy Link low negligible same as full-load torque slightly more than full-load torque Check Answer
If an induction motor is to be run on unbalanced supply, then it should be run at? Mark as favorite Copy Link lower loads low speeds higher loads higher speeds Check Answer
In case of the induction motors the torque is? Mark as favorite Copy Link inversely proportional to (?slip) directly proportional to (slip)2 inversely proportional to slip directly proportional to slip Check Answer
Slip ring motor is recommended where? Mark as favorite Copy Link speed control is required frequent starting, stopping and reversing is required high starting torque is needed all above features are required Check Answer
The auto-starters, (using three auto transformers) can be used to start cage induction motor of the following type? Mark as favorite Copy Link star connected only delta connected only (a) and (b) both none of the above Check Answer
Slip rings are usually made of? Mark as favorite Copy Link copper carbon phosphor bronze aluminium Check Answer