WorksheetsSTEAM BOILER
Total questions: 15
Worksheet time: 11mins
Air preheater is used to preheat air with the help of ______
Air
Flue gases
Water
Steam
_______ is the transfer of heat within a fluid, that is a liquid or gas. It is caused by a mixing action within a fluid.
Conduction
Convection
Radation
Combustion
The following is the correct order of energy conversion in thermal power plants
Chemical energy – Mechanical energy – Electrical energy
Mechanical energy – Chemical energy – Electrical energy
Wind energy – Mechanical energy – Electrical energy
Heat energy – Electrical energy – Mechanical energy
In thermal power plant, turbine is placed
before boiler
in between boiler and generator
after generator
any of the above
In thermal power plants, the dust of flue gases is trapped by
Precipitator
Economizer
Superheater
Air preheater
The path of flue gases in Thermal power plant is
Boiler – Economizer – Superheater– Air preheater
Boiler – Superheater – Air preheater – Economizer
Boiler – Air preheater – Superheater – Economizer
Boiler – Superheater – Economizer – Air preheater
The following is not a component of Thermal power plant
Condenser
Cooling tower
Turbine
Fuel tank
For steam boilers, the fuel(s) is (are) mainly
Bituminous coal
Fuel oil
Natural gas
All of the above
The thermal efficiency of a steam power station is.......
38%
28%
40%
45%
The draught produced by the chimney if due to the ____ difference between the column of hot gases inside the chimney and the cold air outside.
Temperature
Potential
Density
None of the above
The major heat loss in a steam power station occurs in ........
Heat chamber
Penstock
Spillways
Condenser
The cost of fuel transportation is maximum in........
Hydro-electric power plant
Steam power plant
Nuclear power plant
Wind power plant
The boiler commonly used in a thermal plant are__________________.
Water tube type
Fire tube
Both (a) & (b)
None of these
The equipment which produces steam pressure above (a) bar is called high pressure boiler
Steam is classified as
WET STEAM
DRY STEAM
SUPER HEATED STEAM
ALL THE ABOVE
