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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
Hard coke is used in

Cement industry
Thermal power plant
Domestic use
Blast furnace

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Steam Boilers, Engines, Nozzles and Turbines
A device in which some portion of waste heat of flue gases is recovered to heat the air before it passes to the furnace for combustion purpose, is known as

Injector
Air-preheater
Economizer
Superheater

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Steam Boilers, Engines, Nozzles and Turbines
The capacity of induced draft fan compared to forced draft fan in a boiler is

Less
Same
More
Less or more depending on size of boiler

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Steam Boilers, Engines, Nozzles and Turbines
The height of chimney in a power plant is governed by

Quantity of flue gases to be handled
Limitation of construction facilities
The draft to be created
Control of pollution

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Steam Boilers, Engines, Nozzles and Turbines
Which is not correct statement about pulverized fuel firing?

It is the best technique for burning high ash content fuel having low fusion ash
Heat release can be easily controlled
High burning rate is possible
Fuel burns economically

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Steam Boilers, Engines, Nozzles and Turbines
In order to compare the capacity of boilers, the feed water temperature and working pressure are taken as

100°C and 1.1 bar pressure
50°C and normal atmospheric pressure
50°C and 1.1 bar pressure
100°C and normal atmospheric pressure

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