An induction motor can run at synchronous speed when – McqOptions

MCQOPTIONS

1.	An induction motor can run at synchronous speed when
A.	It is run on load
B.	It is run in reverse direction
C.	It is run on voltage higher than the rated voltage
D.	e.m.f. is injected in the rotor circuit
Answer» E.

Discussion

No Comment Found

Related MCQs

Auto transformer method of starting has most acceptable method for the starting of the induction motor due to __________
For the application requiring high starting torque and minimum starting current, the most suitable starting method will be?
A 3-phase, 4-pole, 50 Hz induction motor is uses DOL method of starting. It is later replaced by auto transformer method of starting with a tapping ratio of ‘x’, then the starting torque will be?
A 3-phase, 4-pole, 50 Hz induction motor is uses DOL method of starting. It is later replaced by auto transformer method of starting with a tapping ratio of ‘x’, then the starting current reduces by?
Series reactor method of starting has main disadvantage of lowering the starting power. This can be overcome by __________
Series reactor method of starting has main disadvantage of __________
A 3-phase, 4-pole, 50 Hz induction motor is uses DOL method of starting. It is later replaced by reactance method of starting with a fraction of ‘x’, then the starting torque reduces by?
A 3-phase, 4-pole, 50 Hz induction motor is uses DOL method of starting. It is later replaced by reactance method of starting with a fraction of ‘x’, then the starting current reduces by?
External methods of induction motor starting is employed to __________
The method which employs raising of the voltage while induction motor starting is?