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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
Parson's turbine is a

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

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Steam Boilers, Engines, Nozzles and Turbines
The critical pressure ratio for initially superheated steam is __________ as compared to initially dry saturated steam.

Less
More
Same
None of these

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Steam Boilers, Engines, Nozzles and Turbines
Sulphur in coal results in

All of these
Spontaneous combustion during coal storage
Corroding air heaters
Facilitating ash precipitation

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Steam Boilers, Engines, Nozzles and Turbines
The fittings mounted on the boiler for its proper and safe functioning is a

Water level indicator
All of these
Safety valve
Pressure gauge

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Steam Boilers, Engines, Nozzles and Turbines
The ratio of the actual vacuum to the ideal vacuum in a condenser is called

Condenser efficiency
Vacuum efficiency
Boiler efficiency
Nozzle efficiency

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Steam Boilers, Engines, Nozzles and Turbines
The numbers of fire tubes in a Cochran boiler are

115
165
75
225

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