A. primary transmission
B. secondary transmission
C. primary distribution
D. secondary distribution
0
There is a greater possibility of occurence of corona during______________?
0
Which of the following is not a constituent for making porcelain insulators ?
A. dry weather
B. winter
C. summer heat
D. humid weather
E. none of the above
0
Which of the following materials is used for overhead transmission lines ?
A. Quartz
B. Kaolin
C. Felspar
D. Silica
0
The power transmitted will be maximum when____________?
A. Steel cored aluminium
B. Galvanised steel
C. Cadmium copper
D. Any of the above
0
A feeder, in a transmission system, feeds power to________________?
A. corona losses are minimum
B. reactance is high
C. sending end voltage is more
D. receiving end voltage is more
0
The presence of ozone due to corona is harmful because it________________?
A. distributors
B. generating stations
C. service mains
D. all of the above
0
For an overhead line, the surge impedance is taken as________________?
A. reduces power factor
B. corrodes the material
C. gives odour
D. transfer energy to the ground
E. none of the above
0
Which of the following is usually not the generating voltage ?
A. 20-30 ohms
B. 70—80 ohms
C. 100—200 ohms
D. 500—1000 ohms
E. none of the above