Computer Programming MCQs

5739 MCQs  (Page 26 of 574)

The power transmitted will be maximum when____________?
A. Corona losses are minimum
B. Reactance is high
C. Sending end voltage is more
D. Receiving end voltage is more
Which of the following materials is used for overhead transmission lines ?
A. Steel cored aluminium
B. Galvanised steel
C. Cadmium copper
D. Any of the above
A 3-phase 4 wire system is commonly used on________________?
A. Primary transmission
B. Secondary transmission
C. Primary distribution
D. Secondary distribution
Due to which of the following reasons the cables should not be operated too hot ?
A. the oil may loose its viscosity and it may start drawing off from higher levels
B. expansion of the oil may cause the sheath to burst
C. unequal expansion may create voids in the insulation which will lead to ionization
D. the thermal instability may rise due to the rapid increase of dielectric losses with temperature
The commercial sources of energy are____________?
A. Solar, wind and biomass
B. Fossil fuels, hydropower and nuclear energy
C. Wood, animal wastes and agriculture wastes
D. None of the above
The proper indication of incomplete combustion is_______________?
A. High co content in flue gases at exit
B. High co2 content in flue gases at exit
C. High temperature of flue gases
D. The smoking exhaust from chimney