The frequency of the induced emf in an induction motor is
In an induction motor, the air gap flux density is usually kept low so as to
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The rotor slots are slightly skewed in squirrel - cage induction motor to
The rotor of an induction motor never runs at synchronous speed, because then the relative speed between the rotating flux and rotor will be
A wound rotor motor is mainly used in applications where ..............
Which dc motor characteristic is similar to that of a 3- phase induction motor?
Slip ring induction motors are less extensively used than squirrel cage motors because .........
Which of the following statement is not valid when a squirrel-cage induction motor operates under no-load?
If the supply voltage of 3-phase induction motor is increased two times, then, torque is .
The approximate efficiency of a 3-phase, 50 Hz, 4-pole induction motor running at 1350 r.p.m. is..............
When the supply frequency of a three phase induction motor is increased, then its synchronous speed is
In a double squirrel cage induction motor, the outer cage winding has ................
Very large 3-phase induction motors (> 25 h.p.) are started ............
For the same kVA rating, the leakage flux in induction motor is ....... that of transformer
The frequency of the induced emf in an induction motor is
At no load induction motor has possible power factor as
The rotor power output of 3-phase induction motor is 15 KW. The rotor copper losses at a slip of 4% will be
The frequency of the induced emf in an induction motor is
A capacitor start single phase induction motor will usually have a power factor of
Which part will surely tell that given motor is DC motor and not an AC type?
Slip ring of an induction motor is usually made up of