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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
The draught (in mm of water), for maximum discharge of flue gases through the chimney, is given by (where H = Height of the chimney in meters, and T1 = Absolute temperature of air outside the chimney in K)

88.25H/T1
T1 /88.25H
176.5H/T1
T1 /176.5H

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Steam Boilers, Engines, Nozzles and Turbines
With increase in load, radiant superheater has

Flat characteristic
Rising characteristic
Drooping characteristic
Linear characteristic

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Steam Boilers, Engines, Nozzles and Turbines
The expansion of steam in a nozzle follows

Stirling cycle
Rankine cycle
Carnot cycle
Joule cycle

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Steam Boilers, Engines, Nozzles and Turbines
The ratio of the temperature rise of cooling water to the vacuum temperature minus inlet cooling water temperature is called

Vacuum efficiency
Nozzle efficiency
Condenser efficiency
Boiler efficiency

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Steam Boilers, Engines, Nozzles and Turbines
A single acting steam engine produces ___ power than that of double acting steam engine.

Double
Half
Four times
Equal

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Steam Boilers, Engines, Nozzles and Turbines
The ratio of the volume at cut-off to the swept volume is called

Expansion ratio
None of these
Clearance ratio
Cut-off ratio

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