Top 550+ Solved Thermal Engineering 2 MCQ Questions Answer
Q. What is feature of the Loffler boilers?
a. evaporating water by super heated steam
b. provide better efficiency by re-circulating gas coming out of turbine
c. produce better steam quality by heating the boiler furnace above critical degrees
d. eliminate the extra components used
Q. What is the major difficulty of the La-Mont boiler?
a. unstable water circulation
b. deposition of salts
c. overheating of the components
d. boiler working is slow
Q. Which is the most recent economical method of power generation from boilers?
a. natural circulation boiler
b. fire tube boiler
c. forced circulation
d. super critical boiler
Q. Which of the following boilers has the highest heat transfer capacity?
a. subcritical boiler
b. critical boiler
c. forced circulation boiler
d. supercritical boiler
Q. Why boiler draught is most essential part of the thermal plants?
a. serves combustion by supplying ample amount of air
b. helps in maintaining air ventilation
c. required to maintain constant air flow
d. stabilizes the boiler system
Q. Which is the correct formula of total draught loss?
a. ht = hv + hb + hc + hcd
b. ht = hv + hb – hc + hcd
c. ht = hv – hb + hc + hcd
d. ht = hv – hb – hc – hcd
Q. Which of the following given below as the affect on amount natural draught?
a. boiler operation
b. size of the furnace
c. grade of the fuel
d. dust content in the fuel is used
Q. When is artificial draught preferred?
a. when quick evacuation of flue gases is required
b. when we choose large power plant systems
c. when draught produced by chimney is not sufficient
d. when there are many components inside the boiler
Q. Artificial draught is also called as _______
a. force draught
b. induced draught
c. balanced draught
d. mechanical draught
Q. What is installed to transfer air into furnace in forced draught system?
a. air blower
b. tuyeres
c. draft gauges
d. cyclone separator
Q. Where is blower installed in induced draught system?
a. near the boiler
b. base of the chimney
c. above the boiler
d. between economizer and air preheater
Q. How can exhaust gas be recovered in the induced draught?
a. by installing the forced draught fan at the starting point
b. by extending the chimney’s height
c. by inletting high amount of air from multiple air ducts
d. by installing air preheater and economizer along the gas path
Q. Which is most preferred type of draught system?
a. chimney draught
b. fan draught
c. force draught
d. balanced draught
Q. Which type of draught system is used in the locomotives?
a. natural draught system
b. balanced draught system
c. forced draught system
d. induced steam draught system