GATE EE exam:gate PYQs & Answers — Page 33

Questions 321–330 of 715. Imported answers require independent review unless marked reviewed.

The steady state current flowing through the inductor of a DC-DC buck boost converter is given in the figure below. If the peak-to-peak ripple in the output voltage of the converter is 1 V, then the value of the output capacitor, in μF, is ________________. (round off to nearest integer)

Diagram for Electrical Engineering question 61

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A 280 V, separately excited DC motor with armature resistance of 1 Ω and constant field excitation drives a load. The load torque is proportional to the speed. The motor draws a current of 30 A when running at a speed of 1000 rpm. Neglect frictional losses in the motor. The speed, in rpm, at which the motor will run, if an additional resistance of value 10 Ω is connected in series with the armature, is __________. (round off to nearest integer)

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A 4-pole induction motor with inertia of 0.1 kg-m² drives a constant load torque of 2 Nm. The speed of the motor is increased linearly from 1000 rpm to 1500 rpm in 4 seconds as shown in the figure below. Neglect losses in the motor. The energy, in joules, consumed by the motor during the speed change is __________. (round off to nearest integer)

Diagram for Electrical Engineering question 63

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A star-connected 3-phase, 400 V, 50 kVA, 50 Hz synchronous motor has a synchronous reactance of 1 ohm per phase with negligible armature resistance. The shaft load on the motor is 10 kW while the power factor is 0.8 leading. The loss in the motor is 2 kW. The magnitude of the per phase excitation emf of the motor, in volts, is __________. (round off to nearest integer).

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A 3-phase, 415 V, 4-pole, 50 Hz induction motor draws 5 times the rated current at rated voltage at starting. It is required to bring down the starting current from the supply to 2 times of the rated current using a 3-phase autotransformer. If the magnetizing impedance of the induction motor and no load current of the autotransformer is neglected, then the transformation ratio of the autotransformer is given by ____________. (round off to two decimal places).

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The people ______ were at the demonstration were from all sections of society.

Your answerChoose one option.

whose

which

who

whom

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A transparent square sheet shown above is folded along the dotted line. The folded sheet will look like ________.

Diagram for Electrical Engineering question 2

Your answerChoose one option.

Diagram for Electrical Engineering question 2 (figure 2)

Diagram for Electrical Engineering question 2 (figure 3)

Diagram for Electrical Engineering question 2 (figure 4)

Diagram for Electrical Engineering question 2 (figure 5)

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For a regular polygon having 10 sides, the interior angle between the sides of the polygon, in degrees, is:

Your answerChoose one option.

396

324

216

144

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Which one of the following numbers is exactly divisible by

Your answerChoose one option.

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Oasis is to sand as island is to ________.

Which one of the following options maintains a similar logical relation in the above sentence?

Your answerChoose one option.

Stone

Land

Water

Mountain

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GATE EE exam:gate PYQs

Question 61

Question 62

Question 63

Question 64

Question 65

Question 1

Question 2

Question 3

Question 4

Question 5