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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
A safety valve usually employed with stationary boilers is

Lever safety valve
Dead weight safety valve
High steam and low water safety valve
All of the listed here

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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
Super heated steam
Dry steam
Water

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Steam Boilers, Engines, Nozzles and Turbines
For the same diameter and thickness of tube, a water tube boiler compared to a fire tube boiler has

More heating surface
Equal heating surface
Less heating surface
Heating surface depends on other parameters

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Steam Boilers, Engines, Nozzles and Turbines
Water at pressure of 4 kg/cm² and 160°C temperature when exposed to atmosphere will

Cool down
Remain as it was
Flash i.e. get converted into steam
Boil

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Steam Boilers, Engines, Nozzles and Turbines
The critical pressure at which latent heat of vaporisation is zero is

1 kgf/ cm²
273 kgf/ cm²
225.65 kgf/ cm²
100 kgf/ cm²

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Steam Boilers, Engines, Nozzles and Turbines
The ratio of the useful heat drop to the isentropic heat drop is called

Nozzle efficiency
Vacuum efficiency
Boiler efficiency
Condenser efficiency

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MORE MCQ ON Steam Boilers, Engines, Nozzles and Turbines

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