Which of the following is not a constituent for making porcelain insulators ?
Which of the following is not a constituent for making porcelain insulators ?
A. Quartz
B. Kaolin
C. Felspar
D. Silica
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Aluminium has a specific gravity of___________?
Aluminium has a specific gravity of___________?
A. 1.5
B. 2.7
C. 4.2
D. 7.8The operating voltage of extra high tension cables is upto_______________?
The operating voltage of extra high tension cables is upto_______________?
A. 6.6 kV
B. 11 kV
C. 33 kV
D. 66 kV
E. 132 kVThe 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 aboveBy which of the following systems electric power may be transmitted ?
By which of the following systems electric power may be transmitted ?
A. Overhead system
B. Underground system
C. Both A. and (b)
D. None of the aboveA conductor, due to sag between two supports, takes the form of____________?
A conductor, due to sag between two supports, takes the form of____________?
A. semi-circle
B. triangle
C. ellipse
D. catenaryA booster is a_________________?
A booster is a_________________?
A. series wound generator
B. shunt wound generator
C. synchronous generator
D. none of the above