181. An economiser is installed in a boiler primarily to
superheat the steam
reduce fuel consumption
increase steam pressure
all of these
✅ The correct answer is option B.
Steam Boilers and Engines MCQs
182. Fire tube boilers are limited to a maximum working pressure of
0.17 MN/m2
1.7 MN/m2
17 MN/m2
170 MN/m2
✅ The correct answer is option B.
183. A closed vessel made of steel and used for the generation of steam is called a
steam boiler
steam turbine
steam condenser
steam injector
✅ The correct answer is option A.
184. The fittings mounted on the boiler for its proper and safe functioning is a
water level indicatior
pressure gauge
safety valve
all of these
✅ The correct answer is option D.
185. In case of condensing steam engines, the pressure of steam in the cylinder during exhaust stroke is __________ the atmospheric pressure.
equal to
lower than
higher than
✅ The correct answer is option C.
186. A device used to heat feed water by utilising the heat in me exhaust flue gases before leaving through the chimny, is known as
economiser
fusible plug
superheater
stop valve
✅ The correct answer is option A.
187. The high steam and low water safety valve is not used in
Cochran boiler
Cornish boiler
Lancashire boiler
Locomotive boiler
✅ The correct answer is option D.
188. Lancashire boiler has __________ internal flue tubes.
one
two
three
four
✅ The correct answer is option B.
189. All steam engines work on
Zeroth law of thermodynamics
First law of thermodynamics
Second law of thermodynamics
none of these
✅ The correct answer is option C.
190. A vessel into which the steam is exhausted and condensed after doing work in an engine cylinder or turbine is known as
steam condenser
steam boiler
steam preheater
economiser
✅ The correct answer is option A.