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Mechanical Engineering - Steam Boilers and Engines

Exercise : Steam Boilers and Engines - Section 5
16.
An economiser is generally placed between
last superheater or reheater and air preheater
induced draft fan and forced draft fan
air preheater and chimney
none of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
17.
In fire tube boilers
water passes through the tubes which are surrounded by flames and hot gases
the flames and hot gases pass through the tubes which are surrounded by water
forced circulation takes place
none of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.
18.
The efficiency of a boiler is defined as
ratio of heat actually used in producing steam to the heat liberated in the furnace
ratio of the mass of steam produced to the mass of total water supplied in a given time
ratio of the heat liberated in the furnace to the heat actually Used in producing steam
none of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
19.
The ratio of the temperature rise of cooling water to the vacuum temperature minus inlet cooling water temperature is called
condenser efficiency
vacuum efficiency
nozzle efficiency
boiler efficiency
Answer: Option
Explanation:
No answer description is available. Let's discuss.
20.
A valve installed between the boiler and the feed pump is
blow off cock
feed check valve
steam stop valve
none of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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