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.Management Sciences
Category: Electrical Engineering Mcqs
If the load current drawn by unregulated power supply increases, the d.c. output voltage______________?
0
A. Increases
B. Decreases
C. Stays the same
D. None of the above
At low value of power factor, the cost of generation of a power station will be____________?
A. high
B. low
C. remain same
D. none of the above
Super conductivity can be destroyed by_____________?
A. adding impurities
B. reducing temperatures
C. application of magnetic field
D. any of the above
Which of the following loss in a transformer is zero even at full load ____________?
A. Core loss
B. Friction loss
C. Eddy current loss
D. Hysteresis loss
The carbon percentage is least in__________________?
A. low carbon steel
B. wrought iron
C. cast iron
D. malleable iron
Under harmonic free load voltages, the 3 phase VSI_____________?
A. Does not contains second harmonic
B. Does not contains third harmonic
C. Does not contains fifth harmonic
D. Does not contains seventh harmonic
Overhead lines for power supply to tramcars are at a minimum height of______________?
A. 3 m
B. 6 m
C. 10 m
D. 15 m
If resistance across LM in Fig. 2.30 is 15 ohms, the value of R is____________?
A. 10 Q
B. 20 Q
C. 30 Q
D. 40 Q
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