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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
Curtis turbine is a

Pressure compounded turbine
Simple reaction turbine
Velocity compounded turbine
Pressure-velocity compounded turbine

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Steam Boilers, Engines, Nozzles and Turbines
In an impulse turbine, steam expands

None of these
Partly in the nozzle and partly in blades
Wholly in blades
Wholly in nozzle

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Steam Boilers, Engines, Nozzles and Turbines
When the nozzle operates with the maximum mass flow, the nozzle is said to be

Under-damping
Over-damping
Choked
None of these

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Steam Boilers, Engines, Nozzles and Turbines
While steam expands in turbines, theoretically the entropy

Decreases
Increases
Remains constant
Behaves unpredictably

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

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

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Steam Boilers, Engines, Nozzles and Turbines
At very low temperature, the melting and boiling temperatures become equal. This temperature is

303°K
0°K
373°K
273.16°K

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