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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
In a glass tube type water indicator for a boiler, one end of the tube is connected to water space and the other end is connected to

Chimney
Steam space
Superheater
Water space also

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Steam Boilers, Engines, Nozzles and Turbines
The change in internal energy in steam engines equals to

Change in enthalpy
Work done during the Rankine cycle
Work done during compression
Work done during adiabatic expansion

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Steam Boilers, Engines, Nozzles and Turbines
The evaporation of 15.653 kg of water per hour from and at 100°C is called

One boiler h.p.
Equivalent evaporation
Evaporative capacity
Factor of evaporation

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Steam Boilers, Engines, Nozzles and Turbines
The compounding of turbines is done in order to

All of these
Reduce exit losses
Reduce speed of rotor
Improve efficiency

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Steam Boilers, Engines, Nozzles and Turbines
The efficiency of an impulse turbine is maximum when (where Vb = Blade speed, V = Absolute velocity of steam entering the blade, and α = Nozzle angle)

Vb = V cosα
Vb = 0.5 V cosα
Vb = 0.5 V² cosα
Vb = V² cosα

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Steam Boilers, Engines, Nozzles and Turbines
Alkaline pyrogallate is used in Orsat's apparatus for absorption of

N₂
O₂
CO
CO₂

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