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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
Efficiency of a thermal cycle increases by

Both (A) and (B)
Reheating of steam
Regeneration
Cooling of steam

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Steam Boilers, Engines, Nozzles and Turbines
The maximum efficiency of a reaction turbine is

2 sin²α/(1 + sin²α)
(1 + sin²α)/2 sin²α
(1 + cos²α)/2 cos²α
2 cos²α/(1 + cos²α)

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Steam Boilers, Engines, Nozzles and Turbines
The diameter of internal flue tubes in a Lancashire boiler compared to its shell is

Two-fourth
Two-fifth
One-third
One-half

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Steam Boilers, Engines, Nozzles and Turbines
Orsat meter is used for

Measuring smoke density of flue gases
Mass flow of the flue gases
Volumetric analysis of the flue gases
Gravimetric analysis of the flue gases

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Steam Boilers, Engines, Nozzles and Turbines
Heating of dry steam above saturation temperature is known as

Enthalpy
Superheating
Super saturation
Latent heat

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Steam Boilers, Engines, Nozzles and Turbines
A safety valve in a locomotive starts leaking. The leaking medium will be

Wet steam
Water
Super heated steam
Dry steam

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