TRUE
FALSE
✅ The correct answer is option A.
Steam Boilers and Engines MCQs
Steam engines are called external combustion engines.
Yes
No
✅ The correct answer is option A.
The amount of water evaporated or steam produced in kg per kg of fuel burnt is termed as evaporative capacity of a boiler.
Agree
Disagree
✅ The correct answer is option A.
Which of the following is correct ? (where pa = Actual mean effective pressure, pm = Theoretical mean effective pressure, and K = Diagram factor)
pa = pm/K
pa = pm x K
pa = K/pm
pa = pm + K
✅ The correct answer is option B.
The ratio of heat actually used in producing the steam to the heat liberated in the furnace is known as equivalent evaporation from and at 100° C.
Correct
Incorrect
✅ The correct answer is option B.
Benson boiler is a __________ water tube steam boiler using forced circulation of water.
low pressure
high pressure
✅ The correct answer is option B.
The water tubes in a simple vertical boiler are
horizontal
vertical
inclined
✅ The correct answer is option C.
Willian’s line follows the law (where b = A constant representing the shape of the Willian’s line, a = Another constant i.e. no load consumption per hour, I.P. = Indicated power, and m = Steam consumption per hour)
I.P. = a x m + b
m = a + b x I.P.
I.P. = b x m + a
m = b/I.P. – a
✅ The correct answer is option B.
The ratio of the volume at cut-off to the swept volume is called
cut-off ratio
expansion ratio
clearance ratio
none of these
✅ The correct answer is option A.
A condenser in a steam power plant
increases expansion ratio of steam
reduces back pressure of steam
reduces temperature of exhaust steam
all of these
✅ The correct answer is option D.