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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
The value of diagram factor depends upon

Initial conditions of steam
Initial pressure of steam
All of these
Back pressure

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Steam Boilers, Engines, Nozzles and Turbines
In case of non-condensing steam engines, the pressure of steam in the cylinder during exhaust stroke is _________ the condenser pressure.

Lower than
Higher than
None of these
Equal to

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Steam Boilers, Engines, Nozzles and Turbines
The capacity of induced draft fan compared to forced draft fan in a boiler is

Less or more depending on size of boiler
Same
More
Less

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Steam Boilers, Engines, Nozzles and Turbines
When the speed of the crankshaft is between 100 r.p.m. and 250 r.p.m., the engine said to be a

High speed steam engine
None of the listed here
Medium speed steam engine
Slow speed engine

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Steam Boilers, Engines, Nozzles and Turbines
A supercritical boiler is one that operates above the pressure and temperature of following values

1 kg/cm² and 100°C
218 kg/cm² abs and 540°C
218 kg/cm² abs and 373°C
100 kg/cm² and 540°C

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Steam Boilers, Engines, Nozzles and Turbines
The critical pressure ratio for initially dry saturated steam is

0.577
0.546
0.582
0.601

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