Electrical Engineering MCQs

3699 MCQs  — Computer Programming MCQs  (Page 366 of 370)

Attempt Electrical Engineering Mcqs Quiz
Which of the following distribution systems is more reliable?
A. radial system
B. tree system
C. ring main system
D. all are equally reliable
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Which of the following characteristics should the line supports for transmission lines possess?
A. low cost
B. high mechanical strength
C. longer life
D. all of the above
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Transmission voltage of 11 kV is normally used for distances up to_____km?
A. 20—25 km
B. 40—50 km
C. 60—70 km
D. 80—100 km
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In a given transformer for a given applied voltage, losses which remain constant irrespective of load changes are__________?
A. Hysteresis and eddy current losses
B. Friction and windage losses
C. Copper losses
D. None of the above
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Which of the following statements regarding an idel single-phase transformer having a turn ratio of 1 : 2 and drawing a current of 10 A from 200 V A.C. supply is incorrect?
A. Its secondary current is 5 a
B. Its secondary voltage is 400 v
C. Its rating is 2 kva
D. Its secondary current is 20 a
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Which of the following relays is used on long transmission lines?
A. impedance relay
B. mho’s relay
C. reactance relay
D. none of the above
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The steel used in steel cored conductors is usually__________?
A. alloy steel
B. stainless steel
C. mild steel
D. high speed steel
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For given applied voltage, with the increase in frequency of the applied voltage?
A. Eddy current loss will decrease
B. Eddy current loss will increase
C. Eddy current loss will remain unchanged
D. None of the above
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Losses which occur in rotating electric machines and do not occur in transformers are___________?
A. Friction and windage losses
B. Magnetic losses
C. Hysteresis and eddy current losses
D. Copper losses
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A Transformer transforms____________?
A. Voltage
B. Current
C. Current and voltage
D. Power
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Word of the Day
11 Jul
Envisage
contemplate or conceive of as a possibility or a desirable future event.
گمان کرنا، تصور کرنا، سوچنا

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