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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
Steam turbines may be classified according to

Number of stages
Direction of steam flow
All of these
Mode of steam action

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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
Temperature of intake steam
Volume of intake steam
All of these

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Steam Boilers, Engines, Nozzles and Turbines
Which of the following gases has the highest calorific value?

Coal gas
Blast furnace gas
Water gas
Producer gas

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Steam Boilers, Engines, Nozzles and Turbines
100% efficiency of a thermal cycle cannot be achieved because of

It is not possible to achieve 0°K temperature
Frictional losses
Leakage
Non availability of ideal substance

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Steam Boilers, Engines, Nozzles and Turbines
If the critical pressure ratio for steam is 0.546, then the steam is initially

Dry saturated steam
None of these
Wet steam
Superheated steam

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Steam Boilers, Engines, Nozzles and Turbines
Ultimate analysis of fuel is determination of percentage of

Lower calorific value
Fixed carbon, ash, volatile matter, moisture
Higher calorific value
Carbon, hydrogen, nitrogen, sulphur, moisture

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