GATE EE 2005 | Induction Machines Question 48 | Electrical Machines

GATE EE 2005

MCQ (Single Correct Answer)

-0.6

Under no load condition, if the applied voltage to an induction motor is reduced from the rated voltage to half the rated value,

the speed decreases and the stator current increases

both the speed and the stator current decrease

the speed and the stator current remain practically constant

there is negligible change in the speed but the stator current decreases

GATE EE 2005

MCQ (Single Correct Answer)

-0.6

In a single phase induction motor driving a fan load, the reason for having a high resistance rotor is to achieve

low starting torque

quick acceleration

high efficiency

reduced size

GATE EE 2004

MCQ (Single Correct Answer)

-0.6

A rotating electrical machine having its self-inductances of both the stator and the rotor windings, independent of the rotor position will be definitely not develop

starting torque

synchronizing torque

hysteresis torque

reluctance torque

GATE EE 2004

MCQ (Single Correct Answer)

-0.6

A 400 V, 15 kW, 4 pole, 50 Hz, Y-connected induction motor has full load slip of 4%. The output torque of the machine at full load is

1.66 Nm

95.50 Nm

99.47 Nm

624.73 Nm

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