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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
In a velocity compounded impulse turbine, when steam flows through the second row of moving blades,

Velocity remains constant
Velocity increases
Velocity decreases
Pressure remains constant

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Steam Boilers, Engines, Nozzles and Turbines
The major axis of elliptical manholes on the shell should be provided

Circumferentially
Anywhere
On dished end
Longitudinally

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Steam Boilers, Engines, Nozzles and Turbines
In order to obtain superheated steam, a superheater is added in an existing boiler. As as result, furnace vacuum will

Improve
May improve/worsen depending on size
Worsen
Remain unaffected

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Steam Boilers, Engines, Nozzles and Turbines
The steam temperature with increase in load in case of a boiler fitted with radiation superheater

Increases
Remain unaffected
First increases and then decreases
Decreases

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Steam Boilers, Engines, Nozzles and Turbines
A fusible plug is fitted in small boilers in order to

Control steam dome
Extinguish fire if water level in the boiler falls below alarming limit
Avoid explosion
Avoid excessive build up of pressure

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Steam Boilers, Engines, Nozzles and Turbines
The temperature of flue gases at air heater outlet should be

100°C
Below dew point temperature of flue gases
Above dew point temperature of flue gases
Less than wet bulb temperature of flue gases

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MORE MCQ ON Steam Boilers, Engines, Nozzles and Turbines

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