#eBook_Power_System (Page -2),
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#mcqs_electrical_cables (Page -1),
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Pressure cables are generally not used beyond
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20%
A. 11 kV
24%
B. 33 kV
28%
C. 66 kV
28%
D. 132 kV
Solid type cables are considered unreliable beyond 66 kV because
A. Insulation may melt due to higher temperature
B. Skin effect dominates on the conductor
C. Of corona loss between conductor and sheath material
D. There is a danger of breakdown of insulation due to the presence of voids
Answer: Option D
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A. Insulation may melt due to higher temperature
B. Skin effect dominates on the conductor
C. Of corona loss between conductor and sheath material
D. There is a danger of breakdown of insulation due to the presence of voids
Answer: Option D
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The insulation of the cable decreases with
A. The increase in length of the insulation
B. The decrease in the length of the insulation
C. Either (A) or (B)
D. None of the above
Answer: Option A
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A. The increase in length of the insulation
B. The decrease in the length of the insulation
C. Either (A) or (B)
D. None of the above
Answer: Option A
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The thickness of the layer of insulation on the conductor, in cables, depends upon
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0%
A. Reactive power
0%
B. Power factor
73%
C. Voltage
27%
D. Current carrying capacity