Which of the following methods is easily applicable to control the spe – McqOptions

MCQOPTIONS

1.	Which of the following methods is easily applicable to control the speed of the squirrel-cage induction motor?
A.	y changing the number of stator poles
B.	otor rheostat control
C.	y operating two motors in cascade
D.	y injecting e.m.f. in the rotor circuit
Answer» B. otor rheostat control

Discussion

No Comment Found

Related MCQs

A change of 4% of supply voltage to an induction motor will produce a change of approximately ________?
A 500 kW, 3-phase, 440 volts, 50 Hz, A.C. induction motor has a speed of 960 r.p.m. on full load. The machine has 6 poles. The slip of the machine will be__________?
A 3-phase slip ring motor has____________?
A 3-phase induction motor stator delta connected, is carrying full load and one of its fuses blows out. Then the motor_______________?
A 3-phase induction motor delta connected is carrying too heavy load and one of its fuses blows out. Then the motor______________?
A 3-phase 440 V, 50 Hz induction motor has 4% slip. The frequency of rotor e.m.f. will be____________?
5 H.P., 50-Hz, 3-phase, 440 V, induction motors are available for the following r.p.m. Which motor will be the costliest ?
Insertion of resistance in the rotor of an induction motor to develop a given torque
Which of the following component is usually fabricated out of silicon steel?
The speed of a squirrel-cage induction motor can be controlled by all of the following except