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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
In order to reduce the rotor speed of an impulse turbine, the method employed is

Velocity compounding
Pressure-velocity compounding
Pressure compounding
All of these

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Steam Boilers, Engines, Nozzles and Turbines
Throttle governing of steam engines is a method of controlling the engine output by varying

Pressure of intake steam
Volume of intake steam
Temperature of intake steam
All of these

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Steam Boilers, Engines, Nozzles and Turbines
The pressure of steam in the engine cylinder at the beginning of the stroke is ________ the boiler pressure.

Equal to
None of these
Less than
Higher than

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Steam Boilers, Engines, Nozzles and Turbines
Duplex feed pumps are used in small steam boilers. These operate on the principle of

Gear pump
Centrifugal pump
Reciprocating pump
Axial flow pump

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Steam Boilers, Engines, Nozzles and Turbines
The factor of evaporation for all boilers is always

Greater than unity
Less than unity
Equal to unity
None of these

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

Create vacuum
Inject chemical solution in feed pump
Add make up water in the system
Pump water, similar to boiler feed pump

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