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
Related Mcqs:
- Primary air is that air which is used to_____________?
A. reduce the flame length
B. increase the flame length
C. transport and dry the coal
D. provide air around burners for get¬ting optimum combustion - 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 - The percentage O2 by Weight in atmospheric air is____________?
A. 18%
B. 23%
C. 77%
D. 79% - The percentage 02 by volume in atmosphere air is____________?
A. 21%
B. 23%
C. 77%
D. 79% - In a surface condenser if air is removed, there is___________?
A. fall in absolute pressure maintained in condenser
B. rise in absolute pressure maintained in condenser
C. no change in absolute pressure in the condenser
D. rise in temperature of condensed steam - The amount of air which is supplied for complete combustion is called___________?
A. primary air
B. secondary air
C. tertiary air - Rankine cycle efficiency of a good steam power plant may be in the range of____________?
A. 15 to 20 per cent
B. 35 to 45 per cent
C. 70 to 80 per cent
D. 90 to 95 per ceut - The ratio of exit pressure to inlet pressure of maximum mass flow rate per area of steam through a nozzle when steam is initially superheated is__________?
A. 0.555
B. 0.578
C. 0.5457
D. 0.6 - Steam pressure in a steam power station, which is usually kept now-a-days is of the order of____________?
A. 20 kgf/cm2
B. 50 kgf/cm2
C. 100 kgf/cm2
D. 150 kgf/cm2 - Which of the following power plant has least fuel transportation______________?
A. nuclear power plants
B. diesel generating plants
C. thermal power plants
D. steam power stations
