outside
inside
✅ The correct answer is option A.
Steam Boilers and Engines MCQs
The evaporative capacity of a boiler is defined as the evaporation of 15.653 kg of water per hour from and at 100° C.
Yes
No
✅ The correct answer is option B.
In a compound steam engine, the temperature range per cylinder is reduced, with corresponding reduction in the condensation.
Correct
Incorrect
✅ The correct answer is option A.
The factor of evaporation for all boilers is always
equal to unity
less than unity
greater than unity
✅ The correct answer is option C.
The cut-off ratio is the reciprocal of expansion ratio,
Correct
Incorrect
✅ The correct answer is option A.
The missing quantity per stroke is equal to
cylinder feed – indicated mass of steam
cylinder feed + indicated mass of steam
mass of cushion steam + indicated mass of steam
mass of cushion steam
✅ The correct answer is option A.
The draught produced by a steam jet issuing from a nozzle placed in the chimney is called
induced steam jet draught
chimney draught
forced steam jet draught
none of these
✅ The correct answer is option A.
An air preheater
increases evaporative capacity of the boiler
increases the efficiency of the boiler
enables low grade fuel to be burnt
all of the above
✅ The correct answer is option D.
The actual power supplied by the engine crankshaft is called
indicated power
brake power
frictional power
none of these
✅ The correct answer is option B.
The high pressure and low pressure cylinders in a Tandem type compound engine are regarded as having cranks
180° to each other
90° to each other
0° to each other
none of these
✅ The correct answer is option C.