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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
The high steam and low water safety valve is not used in

Cochran boiler
Locomotive boiler
Cornish boiler
Lancashire boiler

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Steam Boilers, Engines, Nozzles and Turbines
The maximum efficiency of a De-Laval turbine is (where α = Nozzle angle)

cot²α
tan²α
sin²α
cos²α

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Steam Boilers, Engines, Nozzles and Turbines
Reheating of steam in a turbine

Increases the efficiency of the turbine
Increases the work-done through the turbine
All of these
Reduces wear on the blades

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Steam Boilers, Engines, Nozzles and Turbines
The number of drums in Benson steam generator is

Two
One
No drum
One steam drum and one water drum

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Steam Boilers, Engines, Nozzles and Turbines
The dry saturated steam at very low pressure, (510 kg/cm²) when throttled to atmosphere will become

Superheated
Remain dry saturated
Wet
Dry

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Steam Boilers, Engines, Nozzles and Turbines
Rateau turbine is

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

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MORE MCQ ON Steam Boilers, Engines, Nozzles and Turbines

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