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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
The fire tubes in a Cochran boiler are

Inclined
None of these
Vertical
Horizontal

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Steam Boilers, Engines, Nozzles and Turbines
The relative heat absorption for successively added equal areas of boiler convection heating surfaces

Remain unaffected
First increases and then decreases
Increases
Decreases

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Steam Boilers, Engines, Nozzles and Turbines
Gusset stays in a boiler are provided to

Prevent leakage of hot flue gases
Support furnace freely from top
Prevent the bulging of flat surfaces
Avoid explosion in furnace

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Steam Boilers, Engines, Nozzles and Turbines
The average value of diagram factor lies between

0.8 to 1.2
0.2 to 0.5
0.65 to 0.9
0.5 to 0.65

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Steam Boilers, Engines, Nozzles and Turbines
The action of steam in a steam turbine is

Neither static nor dynamic
Dynamic
Static and dynamic
Static

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Steam Boilers, Engines, Nozzles and Turbines
De-Laval turbines are mostly used

For small power purposes and low speeds
For large power purposes
Where low speeds are required
For small power purposes and high speeds

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MORE MCQ ON Steam Boilers, Engines, Nozzles and Turbines

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