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Dear candidates you will find MCQ questions of Electrical and Electronics Engineering 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 • 51.43K Points
Coach

Q. 101) In a 3-phase induction motor, the mechanical power developed, in terms of air rotor input P2 is

(A) (s - 1) p2
(B) p2 / (1-s)
(C) 1/(s p2)
(D) (1 - s) p2
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M

Mr. Dubey • 51.43K Points
Coach

Q. 102) An induction motor employs a starting device to restrict………….. at start

(A) line voltage
(B) line current
(C) torque
(D) power
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M

Mr. Dubey • 51.43K Points
Coach

Q. 103) High starting torque can be produced by induction motor if

(A) a squirrel cage motor is started with auto-transformer starter
(B) a slip-ring induction motor is started with star-delta starter
(C) a squirrel cage motor is started by direct-on-line starter.
(D) a slip-ring induction motor is started with rotor resistance starter
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M

Mr. Dubey • 51.43K Points
Coach

Q. 104) A squirrel cage induction motor is favoured when ……………….. is the main consideration.

(A) initial cost
(B) rotor core and rotor teeth
(C) stator core and stator teeth
(D) stator winding
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M

Mr. Dubey • 51.43K Points
Coach

Q. 105) The torque developed by a 3-phase induction motor during starting

(A) depends on rotor induced emf during starting
(B) rotor induced emf during running condition
(C) does not depend on rotor induced emf
(D) none of these
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M

Mr. Dubey • 51.43K Points
Coach

Q. 106) Condition for maximum torque developed during starting by a three phase induction motor is

(A) r2 = x2
(B) r2 =s x2
(C) r2 /s x2
(D) x2/r2
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M

Mr. Dubey • 51.43K Points
Coach

Q. 107) Condition for maximum torque developed during running by a three phase induction motor is

(A) r2 = x2
(B) r2 =s x2
(C) r2 /s x2
(D) x2/r2
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M

Mr. Dubey • 51.43K Points
Coach

Q. 108) Starting torque depends on

(A) rotor resistance and rotor reactance during starting
(B) supply voltage
(C) both 1 and 2
(D) none of these
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M

Mr. Dubey • 51.43K Points
Coach

Q. 109) Torque developed by three phase induction motor

(A) depends on power factor of rotor
(B) depends on power factor of stator
(C) does not depend on on power factor of rotor or stator
(D) both 1 and 2
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M

Mr. Dubey • 51.43K Points
Coach

Q. 110) The power factor of induction motor is during running condition

(A) depend on slip
(B) is independent of slip
(C) rotor reactance
(D) both b and c
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