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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
In locomotives, the draught is produced by

Chimney
Steam jet draught
Induced draft fan
Both combined (A) and (B)

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Steam Boilers, Engines, Nozzles and Turbines
The maximum discharge of steam through a convergent-divergent nozzle depends upon

Both (A) and (B)
Final pressure of steam leaving the nozzle
Area of nozzle at throat
Initial pressure and volume of steam

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Steam Boilers, Engines, Nozzles and Turbines
The Locomotive boiler has

157 fire tubes and 24 superheated tubes
147 fire tubes and 34 superheated tubes
137 fire tubes and 44 superheated tubes
167 fire tubes and 14 superheated tubes

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Steam Boilers, Engines, Nozzles and Turbines
The water tubes in a simple vertical boiler are

None of the listed here
Vertical
Inclined
Horizontal

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Steam Boilers, Engines, Nozzles and Turbines
The effect of bleeding is that

All of these
It increases the thermodynamic efficiency of the turbine
Boiler is supplied with hot water
It decreases the power developed by the turbine

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Steam Boilers, Engines, Nozzles and Turbines
The performance of a boiler is measured by the

Steam produced in kg/h
Amount of water evaporated per hour
Steam produced in kg/kg of fuel burnt
All of the listed here

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