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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
The steam temperature with increase in load in case of a boiler fitted with radiation superheater

Remain unaffected
First increases and then decreases
Increases
Decreases

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Steam Boilers, Engines, Nozzles and Turbines
When the speed of the crankshaft is between 100 r.p.m. and 250 r.p.m., the engine said to be a

Medium speed steam engine
Slow speed engine
High speed steam engine
None of the listed here

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Steam Boilers, Engines, Nozzles and Turbines
Which of the following is correct? (Where pa = Actual mean effective pressure, pm = Theoretical mean effective pressure, and K = Diagram factor)

pa = K/pm
pa = pm/K
pa = pm + K
pa = pm × K

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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
Smoke meter
Chimney
Precipitator

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Steam Boilers, Engines, Nozzles and Turbines
When the cross-section of a nozzle __________ continuously from entrance to exit, it is called a convergent nozzle.

Increases
None of these
Remain same
Decreases

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Steam Boilers, Engines, Nozzles and Turbines
The height of chimney in a power plant is governed by

Quantity of flue gases to be handled
The draft to be created
Control of pollution
Limitation of construction facilities

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