To study the torque speed characterstics of three phase induction motor.
The shape of the torque/slip curve of an induction motor is:
Introducing the external resistance increases____.i. Speed ii. Output power iii. Starting torque
Introducing the external resistance decreases____. i. Speed ii. Output power iii. Starting torque
What happens to the slip of a three-phase induction motor as the load on the motor increases?
When a three-phase induction motor is rotating at steady state,if the load is increased then the slip will _____ and the efficiency will
A properly shunted centre-zero galvanometer is connected in the rotor circuit of a 6-pole, 50Hz wound rotor Induction motor.If the galvanometer makes 90 complete oscillations in one minute, the speed of rotor would be-
The slip of an induction motor at full load typically falls within the range of:
If Ns is the synchronous speed and s is the slip, then the actual running speed of a three-phase induction motor will be-
A 3-phase 440v, 50Hz induction motor has 4% slip. The frequency of rotor e.m.f. will be-
A 6 pole, 50 Hz, 3-phase induction motor is running at 950 rpm. It has rotor copper loss of 5 KW. The rotor input will be -