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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
Water and sediment in fuel oil can be removed by

Burning the oil
Cooling the oil in the settling tanks
Suspension
Heating the oil in the settling tanks

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Steam Boilers, Engines, Nozzles and Turbines
At critical point, i.e. p=225.65 kg/cm², the latent enthalpy of vaporisation is

Maximum
Zero
Minimum
Depends on temperature also

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

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

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Steam Boilers, Engines, Nozzles and Turbines
If the critical pressure ratio for steam is 0.546, then the steam is initially

Superheated steam
Wet steam
Dry saturated steam
None of these

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

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

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Steam Boilers, Engines, Nozzles and Turbines
An economiser in a boiler

Decreases fuel consumption
Increases steam flow
Increases steam pressure
Decreases steam pressure

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MORE MCQ ON Steam Boilers, Engines, Nozzles and Turbines

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