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Which system is noisy out of all the following ash handling systems?


A) steam jet ash handling system
B) mechanical ash handling system
C) pneumatic ash handling system
D) hydraulic ash handling system

E) None of the above
F) A) and C)

Correct Answer

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Which of the following are not taken as operation and maintenance cost in economics of nuclear power plant?


A) taxes and insurance
B) salaries and wages of staff
C) cost of waste disposal
D) cost of processing materials

E) C) and D)
F) B) and C)

Correct Answer

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The coal is fed to the furnace through


A) conveyor belt
B) wagon tipper
C) hopper
D) crane

E) B) and C)
F) A) and D)

Correct Answer

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Nuclear fuel in reactor lasts for


A) more than 5 months
B) few weeks
C) few days
D) more than 5 years

E) B) and D)
F) B) and C)

Correct Answer

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Thermal treatment methods used to remove impurities like:


A) dissolved carbon dioxide and other gases
B) solid materials
C) carbonate
D) bacterial impurities

E) B) and C)
F) B) and D)

Correct Answer

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Which of these accentuates clinkering trouble on furnace grate burning coal?


A) low reactivity of carbonised residue containing high proportions of iron and sulphur
B) low forced draught and low fuel bed temperature
C) thick fire bed and preheated primary air
D) all of the mentioned

E) All of the above
F) None of the above

Correct Answer

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Stack heat losses can be minimised by


A) using low c.v. fuels
B) controlling the excess air
C) oxygen enrichment of combustion air
D) maintaining proper draft in the furnace

E) A) and B)
F) All of the above

Correct Answer

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Which medium is used to carry ash in the pneumatic ash handling system?


A) conveyor belt
B) water trough
C) air
D) chain belt

E) B) and C)
F) A) and B)

Correct Answer

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Feed water for boiler of thermal power plant is obtained from:


A) natural sources like river and lake
B) partly from condensed steam and natural sources
C) condensed steam and small percentage from natural resources
D) natural sources and small percentage from condensed steam

E) None of the above
F) A) and B)

Correct Answer

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Which of the following types of the fans has the highest cost?


A) centrifugal fans
B) axial fans
C) primary fans
D) gas recirculation fans

E) C) and D)
F) A) and C)

Correct Answer

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Chemical method of treatment is used for treatment of:


A) diissolve gases
B) carbonate and carbon dioxide
C) bacterial impurities
D) send and suspended materials

E) A) and D)
F) C) and D)

Correct Answer

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