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Dear candidates you will find MCQ questions of Control of Electric Drives here. Learn these questions and prepare yourself for coming examinations and interviews. You can check the right answer of any question by clicking on any option or by clicking view answer button.

M

Mr. Dubey • 51.17K Points
Coach

Q. 81) A motor of less than full load power rating can be used if the load is

(A) continuous duty
(B) short time duty
(C) intermittent periodic duty
(D) none of these.
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Mr. Dubey • 51.17K Points
Coach

Q. 82) Pole changing method of speed control is used in

(A) slip ring induction motor
(B) dc shunt motor
(C) dc series motor
(D) squirrel cage induction motor.
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Mr. Dubey • 51.17K Points
Coach

Q. 83) To save the energy during braking

(A) dynamic braking is used
(B) plugging is used
(C) regenerative braking is used
(D) mechanical braking is used.
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Mr. Dubey • 51.17K Points
Coach

Q. 84) To get speed higher than the base speed of the dc shunt motor

(A) armature resistance control is used
(B) field resistance control is used
(C) armature voltage control is used
(D) none of these.
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M

Mr. Dubey • 51.17K Points
Coach

Q. 85) Rotor resistance speed control is used in

(A) squirrel cage induction motor
(B) synchronous motor
(C) slip ring induction motor
(D) dc shunt motor.
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M

Mr. Dubey • 51.17K Points
Coach

Q. 86) Effect of friction torque is more pronounced

(A) when the drive is running on full speed
(B) when the drive is being started
(C) when the drive is being stopped
(D) when the drive at half of its normal speed.
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Mr. Dubey • 51.17K Points
Coach

Q. 87) The equilibrium speed of a motor load system is obtained

(A) when motor torque equals the load torque
(B) when motor torque is less than the load torque
(C) when motor torque is more than the load torque
(D) none of the these.
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Mr. Dubey • 51.17K Points
Coach

Q. 88) Most commonly used ac motor is

(A) Synchronous motor
(B) Slip ring induction motor
(C) Squirrel cage induction motor
(D) ac commutator induction motor.
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M

Mr. Dubey • 51.17K Points
Coach

Q. 89) The motor commonly used in computers and digital systems is

(A) dc shunt motor
(B) Induction motor
(C) Stepper motor
(D) Synchronous motor.
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M

Mr. Dubey • 51.17K Points
Coach

Q. 90) Regenerative braking mode can be achieved in which quadrant (V-I curve)?

(A) Third
(B) Second
(C) Fourth
(D) First
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