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
Related Mcqs:
- The amount of air which is supplied for complete combustion is called___________?
A. primary air
B. secondary air
C. tertiary air - The energy radiated by sun on a bright sunny day is approximately______________?
A. 700 W/m2
B. 800 W/m2
C. 1 kW/m2
D. 2 kW/m2 - Mercury is a choice with steam in binary vapour cycle because it has____________?
A. higher critical temperature and pressure
B. higher saturation temperature than other fluids
C. relatively low vapourisation pressure
D. all above - The draught produced by steel chimney as compared to that produced by brick chimney for the same height is_____________?
A. less
B. more
C. same
D. may be more or less - For the induced draught the fan is located_______________?
A. near bottom of chimney
B. near bottom of furnace
C. at the top of the chimney
D. anywhere permissible - Parson’s turbine is___________?
A. pressure compounded steam turbine
B. simple single wheel, impulse steam turbine
C. simple single wheel reaction steam turbine
D. multi wheel reaction steam turbine - In a steam power plant, the function of a condenser is__________?
A. to maintain pressure below atmospheric to increase work output from the primemover
B. to receive large volumes of steam exhausted from steam prime mover
C. to condense large volumes of steam to water which may be used again in boiler
D. all of the above - The maximum length of a screw conveyer is about___________?
A. 30 metres
B. 40 metres
C. 60 metres
D. 100 metres - Blowing down of boiler water is the process_____________?
A. to reduce the boiler pressure
B. to increase the steam temperature
C. to control the solid concentration in the boiler water by removing some of the concentrated saline water
D. none of the above - One kilowatt hour is equal to_________?
A. 532 k cal.
B. 735 k cal.
C. 746 k cal.
D. 860 k cal.
