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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
Boiler parameters are expressed by

Tonnes/hr. of steam
Pressure of steam in kg/cm²
All of these
Temperature of steam in °C

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Steam Boilers, Engines, Nozzles and Turbines
In a uniflow engine

Steam enters and exhausts through the same port
Steam enters at one end and exhausts at the centre
None of these
Steam enters at the centre and exhausts at the other end

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Steam Boilers, Engines, Nozzles and Turbines
When the nozzle operates with the maximum mass flow, the nozzle is said to be

Under-damping
Over-damping
Choked
None of these

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Steam Boilers, Engines, Nozzles and Turbines
The heat balance sheet for the boiler shows the

All of these
Steam formed by combustion of hydrogen per kg of fuel
Complete account of heat supplied by 1 kg of dry fuel and the heat consumed
Moisture present in the fuel

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Steam Boilers, Engines, Nozzles and Turbines
Tertiary air is the air used to

Transport and dry the coal
Convert CO (formed in lower zone of furnace) into CO₂ at higher zone
Provide air around burners for obtaining optimum combustion
Cool the scanners

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Steam Boilers, Engines, Nozzles and Turbines
The diameter of a cylindrical shell of a Scotch marine boiler varies from

3.5 to 4.5 m
1.5 to 2 m
2.5 to 3.5 m
None of these

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MORE MCQ ON Steam Boilers, Engines, Nozzles and Turbines

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