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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
The maximum heat loss is a boiler occurs due to

Moisture in fuel
Steam formation
Dry flue gases
Unburnt carbon

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Steam Boilers, Engines, Nozzles and Turbines
On Mollier chart, flow through turbine is represented by

Vertical straight line
Straight inclined line
Curved line
Horizontal straight line

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Steam Boilers, Engines, Nozzles and Turbines
The fusible plug in small boilers is located

In the drum
Above steam dome
Over the combustion chamber
In the fire tubes

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Steam Boilers, Engines, Nozzles and Turbines
O₂ content in atmospheric air on volume basis is

0.23
0.3
0.4
0.21

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

Rankine cycle
Joule cycle
Stirling cycle
Carnot cycle

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

Less radiation loss
More calorific value
Better burning
Medium sized units

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