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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
An air preheater is installed

Before the economiser
Between the economiser and chimney
Before the superheater
None of these

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Steam Boilers, Engines, Nozzles and Turbines
Adiabatic process is

Non-heat transfer process
Essentially an isentropic process
Reversible process
Constant temperature process

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Steam Boilers, Engines, Nozzles and Turbines
The safety valve at superheater as compared to drum safety valve setting is set at

Higher value
Lower value
Same value
Any value

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Steam Boilers, Engines, Nozzles and Turbines
In a reaction turbine, when steam flows through the moving blades,

Pressure decreases while velocity increases
Pressure and velocity both increases
Pressure increases while velocity decreases
Pressure and velocity both decreases

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

Provide air around burners for obtaining optimum combustion
Air delivered by forced draft fan
Convert CO (formed in lower zone of furnace) into CO₂ at higher zone
Transport and dry the coal

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Steam Boilers, Engines, Nozzles and Turbines
The cylinder condensation or missing quantity may be reduced by

Keeping the expansion ratio small in each cylinder
Superheating the steam supplied to the engine cylinder
All of these
The efficient steam jacketing of the cylinder walls

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MORE MCQ ON Steam Boilers, Engines, Nozzles and Turbines

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