Star-delta starting of motors is not possible in case of – McqOptions

MCQOPTIONS

1.	Star-delta starting of motors is not possible in case of
A.	Single phase motors
B.	Variable speed motors
C.	Low horse power motors
D.	High speed motors
Answer» B. Variable speed motors

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