TRUE
FALSE
✅ The correct answer is option A.
Steam Boilers and Engines MCQs
In case of non-condensing steam engines, the pressure of steam in the cylinder during exhaust stroke is __________ the condenser pressure.
equal to
lower than
higher than
✅ The correct answer is option C.
The ratio of heat actually used in producing the steam to the heat liberated in the furnace, is known as
equivalent evaporation
factor of evaporation
boiler efficiency
power of a boiler
✅ The correct answer is option C.
Clearance ratio is the ratio of
clearance volume to the swept volume
clearance volume to the volume at cut-off
volume at cut-off to the swept volume
swept volume to the cl
✅ The correct answer is option A.
A device used to heat feed water by utilising the heat in me exhaust flue gases before leaving through the chimny, is known as
economiser
fusible plug
superheater
stop valve
✅ The correct answer is option A.
The high steam and low water safety valve is not used in
Cochran boiler
Cornish boiler
Lancashire boiler
Locomotive boiler
✅ The correct answer is option D.
Lancashire boiler has __________ internal flue tubes.
one
two
three
four
✅ The correct answer is option B.
All steam engines work on
Zeroth law of thermodynamics
First law of thermodynamics
Second law of thermodynamics
none of these
✅ The correct answer is option C.
A vessel into which the steam is exhausted and condensed after doing work in an engine cylinder or turbine is known as
steam condenser
steam boiler
steam preheater
economiser
✅ The correct answer is option A.
In case of condensing steam engines, the pressure of steam in the cylinder during exhaust stroke is __________ the atmospheric pressure.
equal to
lower than
higher than
✅ The correct answer is option C.