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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
Which of the following boiler works on a forced circulation of water?

Loeffler boiler
All of these
Lamont boiler
Benson boiler

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Steam Boilers, Engines, Nozzles and Turbines
Caking coals are those which

Show little or no fusing action
Burn freely
Burn completely
Form lumps or masses of coke

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Steam Boilers, Engines, Nozzles and Turbines
In case of condensing steam engines, the pressure of steam in the cylinder during exhaust stroke is _________ the atmospheric pressure.

Lower than
Equal to
None of these
Higher than

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Steam Boilers, Engines, Nozzles and Turbines
Rateau turbine is

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

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Steam Boilers, Engines, Nozzles and Turbines
The purpose of governing in steam turbines is to

Maintain the speed of the turbine
Reduce the effective heat drop
Reheat the steam and improve its quality
Completely balance against end thrust

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Steam Boilers, Engines, Nozzles and Turbines
The maximum steam pressure in a Locomotive boiler is limited to

0.18 MN/m²
18 MN/m²
180 MN/m²
1.8 MN/m²

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