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.Management Sciences
Category: Power Generation
The efficiency of a modern boiler using coal and heat recovery equipment is about_____________?
A. 25 to 30%
B. 40 to 50%
C. 65 to 70%
D. 85 to 90%
Which of the following load is responsible for lower power factor of supply system__________?
A. induction motors
B. resistive loads
C. synchronous Motors
D. all of the above
Where unpulverised coal has to be used and boiler capacity is large, the stoker which is used is______________?
A. underfeed stoker
B. overfeed stoker
C. any
Which material is used to made a solar cell_______________?
A. aluminum
B. Germanium
C. silicon
D. scandium
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
The effect of considering friction in steam nozzles for the same pressure ratio leads to_________?
A. increase in dryness fraction of exit steam
B. decrease in dryness fraction of exit steam
C. no change in the quality of exit steam
D. decrease or increase of dryness fraction of exit steam depending upon inlet quality
Load center in a power station is___________?
A. center of coal fields
B. center of maximum load of equipments
C. center of gravity of electrical system
Curtis turbine is_____________?
A. reaction steam turbine
B. pressure velocity compounded steam turbine
C. pressure compounded impulse steam turbine
D. velocity compounded impulse steam turbine
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