Agree
Disagree
✅ The correct answer is option A.
Steam Boilers and Engines MCQs
The forced circulation of water does not take place in
La-Mont boiler
Lancashire boiler
Velox boiler
Benson boiler
✅ The correct answer is option B.
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
✅ The correct answer is option B.
The working pressure range for a La-Mont boiler is
0.5 to 10 MN/m2
1 to 15 MN/m2
2.5 to 15 MN/m2
3.5 to 20 MN/m2
✅ The correct answer is option D.
The rate of flow of steam is __________ in case of fire tube boilers.
less
more
✅ The correct answer is option A.
A compound steam engine requires a heavier flywheel than simple steam engines.
TRUE
FALSE
✅ The correct answer is option B.
The pressure of feed water has to be raised before its entry into the boiler. The pressure is raised by a device known as
feedpump
injector
feed check valve
pressure gauge
✅ The correct answer is option A.
The ratio of the temperature rise of cooling water to the vacuum temperature minus inlet cooling water temperature is called
condenser efficiency
vacuum efficiency
nozzle efficiency
boiler efficiency
✅ The correct answer is option A.
For the same length of stroke and speed of crankshaft, the piston speed for a double acting steam engine is __________ the piston speed of single acting steam engine.
equal to
twice
three times
four times
✅ The correct answer is option B.
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
✅ The correct answer is option B.