Exercise: Steam Boilers And Engines

Questions for: Steam Boilers And Engines

The shell of the Cochran boiler is made hemispherical
A:
to give maximum space and strength
B:
to withstand the pressure of steam inside the boiler
C:
both (a) and (b)
D:
none of the above
Answer: C
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The Locomotive boiler has
A:
137 fire tubes and 44 superheated tubes
B:
147 fire tubes and 34 superheated tubes
C:
157 fire tubes and 24 superheated tubes
D:
167 fire tubes and 14 superheated tubes
Answer: C
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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
A:
natural draught
B:
induced draught
C:
forced draught
D:
balanced draught
Answer: B
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The ratio of the clearance volume to the swept volume is called
A:
cut-off ratio
B:
expansion ratip
C:
clearance ratio
D:
none of these
Answer: C
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Which of the following is not a boiler mounting?
A:
Blow off cock
B:
Feed check valve
C:
Economiser
D:
Fusible plug
Answer: C
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