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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
The change in internal energy in steam engines equals to

Change in enthalpy
Work done during compression
Work done during adiabatic expansion
Work done during the Rankine cycle

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Steam Boilers, Engines, Nozzles and Turbines
The fire tubes in a Cochran boiler usually have _________ diameter.

92.5 mm
72.5 mm
62.5 mm
6.25 mm

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Steam Boilers, Engines, Nozzles and Turbines
A condenser where circulating water flows through tubes which are surrounded by steam, in known as

Surface condenser
Evaporative condenser
Jet condenser
Barometric condenser

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Steam Boilers, Engines, Nozzles and Turbines
Orsat meter is used for

Gravimetric analysis of the flue gases
Measuring smoke density of flue gases
Volumetric analysis of the flue gases
Mass flow of the flue gases

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Steam Boilers, Engines, Nozzles and Turbines
Incomplete combustion can be best judged by

Measuring temperature of flue gases at exit of furnace
Excess air in flue gases
Measuring carbon monoxide in flue gases
Smoky chimney exit

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Steam Boilers, Engines, Nozzles and Turbines
In reaction turbines, the axial thrust is due to

Both (A) and (B)
Pressure drop across the rotor
None of these
Change in axial velocity

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