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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
The ratio of brake power to the indicated power is known as

Overall efficiency
Indicated thermal efficiency
Brake thermal efficiency
Mechanical efficiency

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Steam Boilers, Engines, Nozzles and Turbines
The length of shell of a Locomotive boiler is

4 m
3 m
2 m
1 m

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

LaMont boiler
Velox boiler
Benson boiler
Lancashire boiler

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Steam Boilers, Engines, Nozzles and Turbines
In a 50% reaction turbine stage, tangential component of absolute velocity at rotor inlet is 537 m/s and the blade velocity is 454 m/s. The power output in kW of steam will be

296 kW
282 kW
260 kW
302 kW

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Steam Boilers, Engines, Nozzles and Turbines
De-Laval turbine is a

Impulse-reaction turbine
Simple impulse turbine
None of these
Simple reaction turbine

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