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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
A condenser in a steam power plant

Increases expansion ratio of steam
Reduces temperature of exhaust steam
Reduces back pressure of steam
All of these

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Steam Boilers, Engines, Nozzles and Turbines
Which of the following are boiler accessories?

None of these
Superheater
Economizer
Both (A) and (B)

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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)

Decreases
Remains constant
Increases
None of these

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Steam Boilers, Engines, Nozzles and Turbines
In water wall furnace, the heat is transferred to the water walls by

Convection
Conduction
Radiation
Radiation and conduction

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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.

Remain same
Increases
None of these
Decreases

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Steam Boilers, Engines, Nozzles and Turbines
A steam turbine, in which a part of the steam after partial expansion, is used for process heating and the remaining steam is further expanded for power generation, is known as

Pass out turbine
Low pressure turbine
Impulse turbine
Back pressure turbine

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