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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
The draught in locomotive boilers is produced by a

Chimney
Centrifugal fan
Steam jet
None of these

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Steam Boilers, Engines, Nozzles and Turbines
The stage efficiency (ηS) is given by (where ηB = Blading efficiency, and ηN = Nozzle efficiency)

None of the listed here
ηS = ηN / ηB
ηS = ηB / ηN
ηS = ηB × ηN

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

0.601
0.582
0.577
0.546

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Steam Boilers, Engines, Nozzles and Turbines
The length of Cornish boiler is of the order of

57.5 m
24 m
35 m
79 m

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Steam Boilers, Engines, Nozzles and Turbines
Willian’s line for the steam engine is a straight line relationship between the steam consumption per hour and

Indicated power
Pressure of steam
Brake power
Efficiency

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Steam Boilers, Engines, Nozzles and Turbines
The compounding of turbines is done in order to

Reduce exit losses
Improve efficiency
Reduce speed of rotor
All of these

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