Exercise: Steam Boilers And Engines

Questions for: Steam Boilers And Engines

In case of non-condensing steam engines, the pressure of steam in the cylinder during exhaust stroke is __________ the condenser pressure.
A:
equal to
B:
lower than
C:
higher than
D:
Answer: C
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The missing quantity per stroke is equal to
A:
cylinder feed - indicated mass of steam
B:
cylinder feed + indicated mass of steam
C:
mass of cushion steam + indicated mass of steam
D:
mass of cushion steam + cylinder feed
Answer: A
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The diameter of a cylindrical shell of a Scotch marine boiler varies from
A:
1.5 to 2 m
B:
2.5 to 3.5 m
C:
3.5 to 4.5 m
D:
none of these
Answer: B
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Lancashire boiler is
A:
stationary fire tube boiler
B:
internally fired boiler
C:
horizontal boiler
D:
all of these
Answer: D
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The theoretical indicator diagram of a simple steam engine is based upon the assumption that
A:
there is no pressure drop due to condensation
B:
steam is admitted at boiler pressure and exhausted at condenser pressure
C:
the expansion (or compression) of the steam is hyperbolic
D:
all of the above
Answer: D
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