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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
In a nozzle, whole frictional loss is assumed to occur between

Inlet and outlet
Throat and exit
Inlet and throat
All of these

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

Divergent nozzle
Convergent-divergent nozzle
Convergent nozzle
None of these

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Steam Boilers, Engines, Nozzles and Turbines
The ratio of the energy required to produce the artificial draught (expressed in meters head or J/kg of flue gas) to the mechanical equivalent of extra heat carried away per kg of flue gases due to natural draught, is known as

Efficiency of the chimney
Efficiency of the boiler
Efficiency of the fan
Power of the boiler

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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 high pressure and low pressure cylinders in a receiver type compound engine are regarded as having cranks

None of these
90° to each other
180° to each other
0° to each other

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Steam Boilers, Engines, Nozzles and Turbines
Water boils when its vapor pressure

Equals the pressure of water in the container
Equals that of the surroundings
Equals 760 mm of mercury
Equals to atmospheric pressure

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