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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
For the same length of stroke and speed of crankshaft, the piston speed for a double acting steam engine is _________ the piston speed of single acting steam engine.

Twice
Equal to
Four times
Three times

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Steam Boilers, Engines, Nozzles and Turbines
For maximum discharge through a chimney, the condition is that height of hot gas column producing the draught should be

Four times the height of chimney
Equal to the height of chimney
One-half the height of chimney
Two times the height of chimney

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Steam Boilers, Engines, Nozzles and Turbines
The dry saturated steam at very high pressure (150200 kg/cm²) when throttled to atmosphere will become

Remain dry saturated
Wet
Superheated
Dry

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Steam Boilers, Engines, Nozzles and Turbines
The change in internal energy in steam engines equals to

Change in enthalpy
Work done during adiabatic expansion
Work done during the Rankine cycle
Work done during compression

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Steam Boilers, Engines, Nozzles and Turbines
Pulverized fuel is used for

Medium sized units
More calorific value
Less radiation loss
Better burning

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Steam Boilers, Engines, Nozzles and Turbines
Blading efficiency is also known as

Stage efficiency
None of these
Nozzle efficiency
Diagram efficiency

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