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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
The discharge of steam in a convergent-divergent nozzle __________ after the throat (i.e. in the divergent portion of the nozzle)

Increases
Remains constant
None of these
Decreases

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

Nozzle efficiency
None of these
Gross efficiency
Diagram efficiency

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Steam Boilers, Engines, Nozzles and Turbines
Cochran boiler is a

Horizontal water tube boiler
Vertical fire tube boiler
Horizontal fire tube boiler
Vertical water tube boiler

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Steam Boilers, Engines, Nozzles and Turbines
Which device is used in thermal power plants to reduce level of pollution?

Induced draft fan
Chimney
Smoke meter
Precipitator

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Steam Boilers, Engines, Nozzles and Turbines
The critical pressure ratio is given by (where p₁ = Initial pressure of steam, and p₂ = Pressure of steam at throat or critical pressure)

p₁/p₂
p₂/p₁
p₁ + p₂
p₁. p₂

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Steam Boilers, Engines, Nozzles and Turbines
The pressure compounded impulse turbine as compared to velocity compounded turbine require __________ number of stages.

None of these
More
Same
Less

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