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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
The chimney draught varies with

All of these
Height of chimney
Climatic conditions
Temperature of furnace gases

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Steam Boilers, Engines, Nozzles and Turbines
Gusset stays in a boiler are provided to

Avoid explosion in furnace
Support furnace freely from top
Prevent the bulging of flat surfaces
Prevent leakage of hot flue gases

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Steam Boilers, Engines, Nozzles and Turbines
Green coal, in order to be burnt, must be

Heated sufficiently
Burnt in excess air
Burnt as powder
Heated to its ignition point

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Steam Boilers, Engines, Nozzles and Turbines
The high pressure boiler is one, which produces steam at a pressure more than

7580 kg/cm²
10 kg/cm²
Atmospheric pressure
5 kg/cm²

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Steam Boilers, Engines, Nozzles and Turbines
The expansion of steam, as it flows over the blades in reaction turbine, represents

Free expansion process
Isentropic process
Throttling process
Isothermal process

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Steam Boilers, Engines, Nozzles and Turbines
In a reaction turbine when the degree of reaction is zero, then there is

Maximum heat drop in fixed blades
No heat drop in moving blades
No heat drop in fixed blades
Maximum heat drop in moving blades

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