Polyphase Induction Motors - Study Mode
[#1] The low power factor of induction motor is due to
Correct Answer
(D) All of the above
[#2] The injected e.m.f. in the rotor of induction motor must have
Correct Answer
(B) The same frequency as the slip frequency
[#3] If any two phases for an induction motor are interchanged
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(A) The motor will run in reverse direction
[#4] Slip of an induction motor is negative when
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(C) Rotor speed is more than the synchronous speed of the field and are in the same direction
[#5] The torque developed by a 3-phase induction motor least depends on
Correct Answer
(D) Shaft diameter