141. There is about 15 to 20% of coal saving when an economiser is used in a boiler.
TRUE
FALSE
✅ The correct answer is option A.
Steam Boilers and Engines MCQs
142. The chimney draught varies with
climatic conditions
temperature of furnace gases
height of chimney
all of these
✅ The correct answer is option D.
143. Water tube boilers are
internally fired
externally fired
internally as well as externally fired
none of these
✅ The correct answer is option B.
144. The maximum steam pressure in a Locomotive boiler is limited to
0.18 MN/m2
1.8 MN/m2
18 MN/m2
180 MN/m2
✅ The correct answer is option B.
145. A valve installed between the boiler and the feed pump is
blow off cock
feed check valve
steam stop valve
none of these
✅ The correct answer is option B.
146. Locomotive boiler is a
single tube, horizontal, internally fired and stationary boiler
single tube, vertical, externally fired and stationary boiler
multitubular, horizontal, internally fired and mobile boiler
multitubular, horizont
✅ The correct answer is option C.
148. The function of a valve rod is
to provide reciprocating motion to the slide valve
to convert reciprocating motion of the piston into rotary motion of the crank
to convert rotary motion of the crankshaft into to and fro motion of the valve rod
to provide simple harm
✅ The correct answer is option D.
149. The mechanical draught __________ with the amount of smoke.
increases
decreases
does not effect
✅ The correct answer is option B.
150. The missing quantity is mainly due to cylinder condensation and a small amount of steam leakage past the valves and piston.
Agree
Disagree
✅ The correct answer is option A.