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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
Pick up wrong statement about desired properties of a good fuel

Produce minimum smoke and gases
High ignition point
Ease in storing
High calorific value

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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

Worsen
Remain unaffected
Improve
May improve/worsen depending on size

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Steam Boilers, Engines, Nozzles and Turbines
Which of the following varieties of coals is mostly used in steam boilers?

None of the listed here
Peat
Non-coking bituminous coal
Brown coal

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Steam Boilers, Engines, Nozzles and Turbines
The actual vacuum in a condenser is equal to

Barometric pressure - actual pressure
Gauge pressure - atmospheric pressure
Gauge pressure + atmospheric pressure
Barometric pressure + actual pressure

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Steam Boilers, Engines, Nozzles and Turbines
The function of injector used in small capacity boilers is to

Inject chemical solution in feed pump
Create vacuum
Add make up water in the system
Pump water, similar to boiler feed pump

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Steam Boilers, Engines, Nozzles and Turbines
The pressure of reheat steam after passing through reheater compared to inlet condition is

Less
Equal
May be more or less depending on capacity of reheater
More

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MORE MCQ ON Steam Boilers, Engines, Nozzles and Turbines

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