Economisers improve boiler efficiency by__________?
A. 1 to 5%
B. 4 to 10%
C. 10 to 12%
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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
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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
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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%
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The maximum length of a screw conveyer is about___________?
A. 30 metres
B. 40 metres
C. 60 metres
D. 100 metres
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Belt conveyer can be used to transport coal at inclinations upto____________?
A. 30°
B. 60°
C. 80°
D. 90°
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Steam turbines commonly used in steam power station are__________?
A. Condensing type
B. Non-condensing type
C. None of the above
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For the safety of a steam boiler the number of safety valves fitted are____________?
A. Four
B. Three
C. Two
D. One
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Pipes carrying steam are generally made up of_____________?
A. Steel
B. Cast iron
C. Copper
D. Aluminium
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Evaporative type of condenser has___________?
A. Steam in pipes surrounded by water
B. Water in pipes surrounded by steam
C. Either a. or (b)
D. None of the above
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Word of the Day
31 Aug
Hefty
large and heavy.
طاقتور، ہٹا کٹا، زبردست

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