GATE EE 2000 | GATE EE Year Wise Previous Years Questions

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GATE EE 2000

MCQ (Single Correct Answer)

-0.3

The compensating winding in a dc machine

is located in armature slots for compensation of the armature reaction

is located on commutating poles for improving the commutation

is located on pole shoes for avoiding the flashover at the commutator surface

is located on poles shoes to avoid the sparking at the brushes.

GATE EE 2000

MCQ (Single Correct Answer)

-0.3

Ratio of the rotor reactance X to the rotor resistance R for a two-phase servomotor

is equal to that of a normal induction motor

is less than that of a normal induction motor

is greater than that of a normal induction motor

may be less or greater than that of a normal induction motor

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

A 240 V dc series motor takes 40A when giving its rated output at 1500 rpm. Its resistance is 0.3 ohms. The value of resistance which must be added to obtain rated torque at 1000 rpm is:

6 ohms

5.7 ohms

2.2 ohms

1.9 ohms

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