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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
The velocity of steam leaving the nozzle (V) is given by (where K = Nozzle coefficient or nozzle efficiency, and hd = Enthalpy or heat drop during expansion of steam in a nozzle)

V = 44.72 K hd
V = 44.72 hd K
V = 44.72 K hd
V = 44.72 K hd

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Steam Boilers, Engines, Nozzles and Turbines
The water tubes in a simple vertical boiler are

Inclined
Horizontal
None of the listed here
Vertical

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Steam Boilers, Engines, Nozzles and Turbines
In a boiler, the heat is lost

All of these
To steam formed by combustion of hydrogen per kg of fuel
In moisture present in the fuel
To dry flue gases

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Steam Boilers, Engines, Nozzles and Turbines
In a reaction turbine, when steam flows through the moving blades,

Pressure increases while velocity decreases
Pressure and velocity both decreases
Pressure and velocity both increases
Pressure decreases while velocity increases

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Steam Boilers, Engines, Nozzles and Turbines
The capacity of induced draft fan compared to forced draft fan in a boiler is

Less or more depending on size of boiler
More
Same
Less

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Steam Boilers, Engines, Nozzles and Turbines
The steam leaves the nozzle at a

Low pressure and a low velocity
High pressure and a high velocity
Low pressure and a high velocity
High pressure and a low velocity

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MORE MCQ ON Steam Boilers, Engines, Nozzles and Turbines

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