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Mechanical Engineering - Steam Boilers and Engines

Exercise : Steam Boilers and Engines - Section 5
6.
The ratio of the energy required to produce the artificial draught (expressed in metres head or J/kg of flue gas) to the mechanical equivalent of extra heat carried away per kg of flue gases due to natural draught, is known as
efficiency of the boiler
efficiency of the chimney
efficiency of the fan
power of the boiler
Answer: Option
Explanation:
No answer description is available. Let's discuss.
7.
The function of a piston in a steam engine is
to guide motion of the piston rod and to prevent it from bending
to transfer motion from the piston to the cross-head
to convert heat energy of the steam into mechanical work id) to exhaust steam from the cylinder at proper moment
Answer: Option
Explanation:
No answer description is available. Let's discuss.
8.
The high steam and low water safety valve is not used in
Cochran boiler
Cornish boiler
Lancashire boiler
Locomotive boiler
Answer: Option
Explanation:
No answer description is available. Let's discuss.
9.
In a Woolf type compound engine, the high pressure and low pressure cylinders
have common piston rod
are set at 90°
have separate piston rod
are set in V - arrangement
Answer: Option
Explanation:
No answer description is available. Let's discuss.
10.
The actual power generated in the engine cylinder is called
indicated power
brake power
frictional power
none of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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