The spacing between phase conductors of a 220 kV line is approximately equal to________________?
The spacing between phase conductors of a 220 kV line is approximately equal to________________?
A. 2 m
B. 3.5 m
C. 6 m
D. 8.5 m
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The distributors for residential areas are______________?
The distributors for residential areas are______________?
A. single phase
B. three-phase three wire
C. three-phase four wire
D. none of the aboveOverhead system can be designed for operation up to____________?
Overhead system can be designed for operation up to____________?A. 11 kV
B. 33 kV
C. 66 kV
D. 400 kVThe voltage of the single phase supply to residential consumers is_____________?
The voltage of the single phase supply to residential consumers is_____________?
A. 110 V
B. 210 V
C. 230 V
D. 400 VThe presence of ozone due to corona is harmful because it________________?
The presence of ozone due to corona is harmful because it________________?
A. reduces power factor
B. corrodes the material
C. gives odour
D. transfer energy to the ground
E. none of the aboveThe following system is not generally used?
The following system is not generally used?
A. 1-phase 3 wire
B. 1-phase 4 wire
C. 3-phase 3 wire
D. 3-phase 4 wireThe operating voltage of supertension cables is up to_________________?
The operating voltage of supertension cables is up to_________________?
A. 3.3 kV
B. 6.6 kV
C. 11 kV
D. 33 kV