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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
The forced circulation of water does not take place in

Benson boiler
Lancashire boiler
LaMont boiler
Velox boiler

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Steam Boilers, Engines, Nozzles and Turbines
Lancashire boiler is

Internally fired boiler
All of these
Horizontal boiler
Stationary fire tube boiler

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Steam Boilers, Engines, Nozzles and Turbines
A device used in a boiler to control the flow of steam from the boiler to the main pipe and to shut off the steam completely when required, is known as

Blow off cock
Fusible plug
Stop valve
Superheater

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Steam Boilers, Engines, Nozzles and Turbines
Water tube boilers are those in which

Flue gases pass through tubes and water around it
Work is done during adiabatic expansion
Water passes through the tubes and flue gases around it
Change in enthalpy

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Steam Boilers, Engines, Nozzles and Turbines
The ratio of total useful heat drop to the total isentropic heat drop, is called

None of these
Internal efficiency
Rankine efficiency
Stage efficiency

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Steam Boilers, Engines, Nozzles and Turbines
Over fire burning is the phenomenon of

Supply of excess coal
Fuel bed firing
Burning CO and unburnt in upper zone of furnace by supplying more air
Supply of excess, air

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