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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
The basic purpose of drum in boiler is to

Separate steam from water
Remove salts from water
Serve as storage of steam
Serve as storage of feed water for water wall

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Steam Boilers, Engines, Nozzles and Turbines
In a receiver type compound engine, the high pressure and low pressure cylinders

Are set at 90°
Have common piston rod
Are set in V-arrangement
Have separate piston rods

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Steam Boilers, Engines, Nozzles and Turbines
Mechanical equivalent of heat for 1 kcal or Joule's equivalent is equal to

421 kg.m
539 kg.m
421 kg.m
102 kg.m

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Steam Boilers, Engines, Nozzles and Turbines
A compound steam engine in which piston rods of high pressure and low pressure cylinders are attached to two different cranks set at 90° to each other, is called

Woolf type compound engine
Receiver type compound engine
Both (A) and (B)
Tandem type compound engine

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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

May improve/worsen depending on size
Worsen
Improve
Remain unaffected

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Steam Boilers, Engines, Nozzles and Turbines
An air preheater

Increases the efficiency of the boiler
All of these
Enables low grade fuel to be burnt
Increases evaporative capacity of the boiler

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MORE MCQ ON Steam Boilers, Engines, Nozzles and Turbines

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