GATE EE 2000 | GATE EE Year Wise Previous Years Questions

GATE EE 2000

MCQ (Single Correct Answer)

-0.6

A three phase, wound rotor induction motor is to be operated with slip energy recovery in the constant torque mode, when it delivers an output power P₀ at slop 's'. then theoretically, the maximum power that is available for recovery at the rotor terminals, is equal to

P₀

P_0.s

$$\frac{P_0}{\left(1-s\right)}$$

$$\frac{P_0S}{\left(1-s\right)}$$

GATE EE 2000

MCQ (Single Correct Answer)

-0.6

The power input to a 415 V, 50 Hz, 6 pole, 3-phase induction motor running at 975 rpm is 40 kW. The stator losses are 1kW and friction and windage losses total 2 kW. The efficiency of the motor is

92.5%

90%

91%

88%

GATE EE 2000

MCQ (Single Correct Answer)

-0.6

A 3-phase, 4-pole squirrel cage induction motor has 36 stator and 28 rotor slots. The number of phases in the rotor is:

GATE EE 2000

MCQ (Single Correct Answer)

-0.3

The phase sequence of a three-phase alternator will reverse if

the field current is reversed keeping the direction of rotation same

the field current remains the same but the direction of rotation is reversed

the field current is reversed and the number of poles is doubled

the number of poles is doubled without reversing the field current

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