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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
The fire tubes in a Scotch marine boiler are

Horizontal
Vertical
Inclined
None of the listed here

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Steam Boilers, Engines, Nozzles and Turbines
The diameter of Cornish boiler varies from

0.5 to 1 m
1.25 to 2.5 m
2 to 3 m
1 to 2 m

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Steam Boilers, Engines, Nozzles and Turbines
Pick up wrong statement about desired properties of a good fuel

High ignition point
High calorific value
Produce minimum smoke and gases
Ease in storing

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Steam Boilers, Engines, Nozzles and Turbines
The draught produced by a steam jet issuing from a nozzle placed in the ash-pit under the fire grate of the furnace is called

Chimney draught
Induced steam jet draught
Forced steam jet draught
None of these

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Steam Boilers, Engines, Nozzles and Turbines
Adiabatic process is

Essentially an isentropic process
Non-heat transfer process
Reversible process
Constant temperature process

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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
None of these
Same
More

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