Electrical Engineering MCQs

3699 MCQs  — Computer Programming MCQs  (Page 358 of 370)

Attempt Electrical Engineering Mcqs Quiz
The shaft of an induction motor is made of_____________?
A. High speed steel
B. Stainless steel
C. Carbon steel
D. Cast iron
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In an induction motor, no-load the slip is generally____________?
A. Less than 1%
B. 1.5%
C. 2%
D. 4%
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In case the air gap in an induction motor is increased?
A. The magnetising current of the rotor will decrease
B. The power factor will decrease
C. Speed of motor will increase
D. The windage losses will increase
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The torque of an induction motor is___________?
A. Directly proportional to slip
B. Inversely proportional to slip
C. Proportional to the square of the slip
D. None of the above
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The frame of an induction motor is usually made of____________?
A. Silicon steel
B. Cast iron
C. Aluminium
D. Bronze
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A D.C. generator works on the principle of____________?
A. Lenz’s law
B. Ohm’s law
C. Faraday’s law of electromagnetic induction
D. None of the above
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The terminal voltage of a series generator is 150 V when the load current is 5 A. If the load current is increased to 10 A, the terminal voltage will be____________?
A. 150 v
B. Less than 150 v
C. Greater than 150 v
D. None of the above
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A series generator can self-excite:______________?
A. Only if the load current is zero
B. Only if the load current is not zero
C. Irrespective of the value of load current
D. None of the above
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Which of the following generators will be preferred if they are required to be run in parallel?
A. Shunt generators
B. Series generators
C. Compound generators
D. None of the above
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Two generators are running in parallel. One of the generators may run as motor for which of the following reasons ?
A. The direction of that generator is reversed
B. The speed of that generator is increased
C. The field of that generator is weakened
D. That generator takes large share of loads
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Word of the Day
12 Jul
Obdurate
stubbornly refusing to change one’s opinion or course of action.
ضدی، بدکار، سنگدلی

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