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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
The value of the reheat factor varies from

1.6 to 2
1.02 to 1.06
1.2 to 1.6
1.08 to 1.10

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Steam Boilers, Engines, Nozzles and Turbines
Which of the following is steam dial?

Brown coal
Non-coking bituminous coal
Coking bituminous coal
Pulverized coal

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Steam Boilers, Engines, Nozzles and Turbines
The ratio of the temperature rise of cooling water to the vacuum temperature minus inlet cooling water temperature is called

Condenser efficiency
Vacuum efficiency
Boiler efficiency
Nozzle efficiency

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

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

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Steam Boilers, Engines, Nozzles and Turbines
The critical pressure ratio for initially dry saturated steam is

0.577
0.601
0.582
0.546

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Steam Boilers, Engines, Nozzles and Turbines
An economiser in a boiler

Increases steam flow
Increases steam pressure
Decreases fuel consumption
Decreases steam pressure

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