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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
With increase in load, radiant superheater has

Linear characteristic
Drooping characteristic
Flat characteristic
Rising characteristic

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Steam Boilers, Engines, Nozzles and Turbines
Steam in water tube boiler as compared to fire tube boiler

Could be raised at fast/slow rate depending on design
Is raised at slower rate
Can be raised rapidly
Is raised at same rate

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Steam Boilers, Engines, Nozzles and Turbines
The function of injector used in small steam plants is to

Dose chemicals in feed water
Create vacuum at turbine exhaust
Pump feed water
Create vacuum in furnace

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Steam Boilers, Engines, Nozzles and Turbines
The high pressure and low pressure cylinders in a receiver type compound engine are regarded as having cranks

90° to each other
None of these
0° to each other
180° to each other

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Steam Boilers, Engines, Nozzles and Turbines
The change in internal energy in steam engines equals to

Change in enthalpy
Work done during the Rankine cycle
Work done during adiabatic expansion
Work done during compression

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Steam Boilers, Engines, Nozzles and Turbines
The impulse turbine rotor efficiency will have a maximum value of 0.5 cos 2α, where α is the nozzle exit flow angle, if the

Blade velocity coefficient is unity
Blades are equiangular
Blade solidity is 0.65
Blades are equiangular and frictionless

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