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A. has high heating value
B. retards electric precipitation
C. promotes complete combustion
D. has highly corrosive effect
Answer
Answer
D. has highly corrosive effect
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An economiser in a boiler?
A. increases steam pressure
B. increases steam flow
C. decreases fuel consumption
D. decreases steam pressure
Answer
Answer
C. decreases fuel consumption
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Ultimate analysis of fuel is determination of percentage of?
A. carbon, hydrogen, nitrogen, sulphur, moisture
B. fixed carbon, ash, volatile matter, moisture
C. higher calorific value
B. lower calorific value
Answer
Answer
A.
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Which device is used in thermal power plants to reduce level of pollution?
A. induced draft fan
B. smoke meter
C. chimney
D. precipitator
Answer
Answer
D. precipitator
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In locomotives, the draught is produced by?
A. chimney
B. induced draft fan
C. both combined A. and B.
D. steam jet draught
Answer
Answer
D. steam jet draught
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Vacuum for reciprocating steam engines compared to steam turbines is?
A. more
B. equal
C. less
D. could be more or less depending on the size of plant
Answer
Answer
C. less
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The height of chimney in a power plant is governed by?
A. the draft to be created
B. limitation of construction facilities
C. control of pollution
D. quantity of flue gases to be handled
Answer
Answer
C. control of pollution
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With increase in load, convection superheater has?
A. drooping characteristic
B. linear characterisstic
C. rising characteristic
D. flat characteristic
Answer
Answer
C. rising characteristic
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In which of the following boilers, the draught in furnace is increased by utilising exhaust steam from engine?
A. Lancashire boiler
B. locomotive boiler
C. Babcock and Wilcox boiler
D. Cochran boiler
Answer
Answer
B. locomotive boiler
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The radius of a dished head is taken approximately as?
A. one-fourth
B. half
C. one
D. two
Answer
Answer
C. one
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