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Mechanical Engineering - Steam Boilers and Engines

Exercise : Steam Boilers and Engines - Section 3
36.
The ratio of the clearance volume to the swept volume is called
cut-off ratio
expansion ratip
clearance ratio
none of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.
37.
The air pressure at the fuel bed is reduced below that of atmosphere by means of a fan placed at or near the bottom of the chimney to produce a draught. Such a draught is called
natural draught
induced draught
forced draught
balanced draught
Answer: Option
Explanation:
No answer description is available. Let's discuss.
38.
The Locomotive boiler has
137 fire tubes and 44 superheated tubes
147 fire tubes and 34 superheated tubes
157 fire tubes and 24 superheated tubes
167 fire tubes and 14 superheated tubes
Answer: Option
Explanation:
No answer description is available. Let's discuss.
39.
The shell of the Cochran boiler is made hemispherical
to give maximum space and strength
to withstand the pressure of steam inside the boiler
both (a) and (b)
none of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
40.
A __________ in a boiler is used to put off fire in the furnace of the boiler when the level of water in the boiler falls to an unsafe limit.
blow off cock
fusible plug
stop valve
safety valve
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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