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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
An ideal regenerative cycle is

Could be anything
Less than Carnot cycle
More than Carnot cycle
Equal to Carnot cycle

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Steam Boilers, Engines, Nozzles and Turbines
The size of a boiler drum in pulverized fuel fired boiler, as its size and capacity, (steam pressure and flow ratings) increase

Decreases
Remains unchanged
Increases/decreases depending on steam temperature requirements
Increases

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Steam Boilers, Engines, Nozzles and Turbines
Heating wet steam at constant temperature is heating it at constant

Volume
Pressure
Enthalpy
Entropy

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Steam Boilers, Engines, Nozzles and Turbines
The critical pressure at which latent heat of vaporisation is zero is

225.65 kgf/ cm²
273 kgf/ cm²
100 kgf/ cm²
1 kgf/ cm²

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Steam Boilers, Engines, Nozzles and Turbines
The pressure at which latent heat of vaporisation of water is zero, is

225.6 kg/cm²
Below atmospheric pressure
100 kg/cm²
1 kg/cm²

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Steam Boilers, Engines, Nozzles and Turbines
In order to reduce the rotor speed of an impulse turbine, the method employed is

All of these
Pressure compounding
Velocity compounding
Pressure-velocity compounding

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