Computer Programming MCQs

5739 MCQs  (Page 25 of 574)

As compared to a 2-wire D.C. distributor, a 3-wire distributor with same maximum voltage to earth uses only__________________?
A. 31.25 percent of copper
B. 33.3 percent of copper
C. 66.7 percent of copper
D. 125 percent of copper
For an overhead line, the surge impedance is taken as________________?
A. 20-30 ohms
B. 70—80 ohms
C. 100—200 ohms
D. 500—1000 ohms
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
A feeder, in a transmission system, feeds power to________________?
A. Distributors
B. Generating stations
C. Service mains
D. All of the above