A steam power station requires space______________?

Secondary air is the air used to______________?

A. reduce the flame length
B. increase the flame length
C. transport and dry the coal
D. provide air round the burners for getting optimum combustion

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
E. All of the above

Rankine efficiency of a steam power plant____________?

A. improves in summer as compared to that in winter
B. improves in winter as compared to that in summer
C. is unaffected by climatic conditions
D. none of the above

Edward’s air pump____________?

A. removes air and also vapour from condenser
B. removes only air from condenser
C. removes only un-condensed vapour from condenser
D. removes air alongwith vapour and also the condensed water from condenser

One kilowatt hour is equal to_________?

A. 532 k cal.
B. 735 k cal.
C. 746 k cal.
D. 860 k cal.

The fuel used in nuclear reactor is_____________?

A. radium
B. cadmium
C. uranium
D. all of the above