✅ The correct answer is option D.
Steam Boilers and Engines MCQs
Cut-off governing as compared to throttle governing is
less efficient and less economical
less efficient and more economical
more efficient and less economical
more efficient and mor
✅ The correct answer is option D.
The high steam and low water safety valve is used to blow off steam when the
steam pressure exceeds the working pressure
water level in the boiler becomes too low
both (a) and (b)
none of the above
✅ The correct answer is option C.
Water tube boilers produce steam at a __________ pressure than that of fire tube boilers.
lower
higher
✅ The correct answer is option B.
The actual power generated in the engine cylinder is called
indicated power
brake power
frictional power
none of these
✅ The correct answer is option A.
The internal flue tubes of a Lancashire boiler are reduced in diameter at the back to provide access to the lower part of the boiler.
TRUE
FALSE
✅ The correct answer is option A.
The ratio of the clearance volume to the swept volume is called
cut-off ratio
expansion ratip
clearance ratio
none of these
✅ The correct answer is option C.
The damper in a steam boiler is provided to control the draught (i.e. rate of flow of air) and thus regulate the rate of generation of steam.
Correct
Incorrect
✅ The correct answer is option A.
A device in which some portion of waste heat of flue gases is recovered to heat the air before it passes to the furnace for combustion purpose, is knwon as
superheater
air preheater
economiser
injector
✅ The correct answer is option B.
Which of the following are boiler accessories ?
economiser
superheater
both (a) and (b)
none of these
✅ The correct answer is option C.