There is a greater possibility of occurence of corona during______________?
There is a greater possibility of occurence of corona during______________?
A. dry weather
B. winter
C. summer heat
D. humid weather
E. none of the above
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Which of the following materials is not used for transmission and distribution of electrical power________________?
Which of the following materials is not used for transmission and distribution of electrical power________________?
A. Copper
B. Aluminium
C. Steel
D. TungstenThe current drawn by the line due to corona losses is___________?
The current drawn by the line due to corona losses is___________?
A. non-sinusoidal
B. sinusoidal
C. triangular
D. squareFor aluminium, as compared to copper, all the following factors have higher values except:
For aluminium, as compared to copper, all the following factors have higher values except:
A. specific volume
B. electrical conductivity
C. co-efficient of linear expansion
D. resistance per unit length for same cross-sectionThe material commonly used for sheaths of underground cables is______________?
The material commonly used for sheaths of underground cables is______________?
A. lead
B. rubber
C. copper
D. iron_______________are the conductors, which connect the consumer’s terminals to the distribution?
_______________are the conductors, which connect the consumer’s terminals to the distribution?
A. Distributors
B. Service mains
C. Feeders
D. None of the aboveA 3-phase 4 wire system is commonly used on________________?
A 3-phase 4 wire system is commonly used on________________?
A. primary transmission
B. secondary transmission
C. primary distribution
D. secondary distribution