Power Engineering 3B1 Chapter 2 Questions
and Answers
1. Heat recovery started to be added to the refuse incinerators, as did strict air pollution
guidelines. The basic incinerators with waste heat recovery have evolved into _________
boilers with integral stokers
a. packaged
b. fire tubed
c. open harth
d. water-wall Correct Ans-d
2. The combustion products from burning municipal waste are very ________
a. hot
b. corrosive
c. many
d. wet Correct Ans-b
3. There is also corrosion caused by _________ in refuse-fired boilers
a. chlorides
b. fuels
c. materials
d. burning Correct Ans-a
4. The higher the tube metal temperature, the ________ the degree of tube metal loss
a. less
b. greater
c. minimum
d. smaller Correct Ans-b
5. Corrosion of the ______ furnace area of the boiler can be severe during refuse firing
a. upper
b. middle
c. lower
d. recovery Correct Ans-c
, 6. InconelTM is an alloy composed mostly of ______ and chromium.
a. lead
b. copper
c. steel
d. nickel Correct Ans-d
7. Biomass is anything that is or recently was alive, such as leaves, grasses, bamboo, vine
clippings, sugar cane, coffee grounds, and rice hulls
a. True
b. False Correct Ans-a
8. Systems to burn wood and biomass usually involve a separate ________, called a dutch
oven, or a traveling grate or vibrating grate arrangement
a. oven
b. furnace
c. collection
d. burner Correct Ans-b
9. The pinhole grates have __________ air holes to admit air to the burning material on
the grate.
a. venture-type
b. square
c. round
d. large Correct Ans-c
10. The vibrating grate systems, have grate bars attached to a frame that _______ to remove
the ash.
a. rotate
b. move
c. vibrate
d. turn Correct Ans-c
11. The vibration also serves to aid combustion by _______ out the bed of burning biomass.
and Answers
1. Heat recovery started to be added to the refuse incinerators, as did strict air pollution
guidelines. The basic incinerators with waste heat recovery have evolved into _________
boilers with integral stokers
a. packaged
b. fire tubed
c. open harth
d. water-wall Correct Ans-d
2. The combustion products from burning municipal waste are very ________
a. hot
b. corrosive
c. many
d. wet Correct Ans-b
3. There is also corrosion caused by _________ in refuse-fired boilers
a. chlorides
b. fuels
c. materials
d. burning Correct Ans-a
4. The higher the tube metal temperature, the ________ the degree of tube metal loss
a. less
b. greater
c. minimum
d. smaller Correct Ans-b
5. Corrosion of the ______ furnace area of the boiler can be severe during refuse firing
a. upper
b. middle
c. lower
d. recovery Correct Ans-c
, 6. InconelTM is an alloy composed mostly of ______ and chromium.
a. lead
b. copper
c. steel
d. nickel Correct Ans-d
7. Biomass is anything that is or recently was alive, such as leaves, grasses, bamboo, vine
clippings, sugar cane, coffee grounds, and rice hulls
a. True
b. False Correct Ans-a
8. Systems to burn wood and biomass usually involve a separate ________, called a dutch
oven, or a traveling grate or vibrating grate arrangement
a. oven
b. furnace
c. collection
d. burner Correct Ans-b
9. The pinhole grates have __________ air holes to admit air to the burning material on
the grate.
a. venture-type
b. square
c. round
d. large Correct Ans-c
10. The vibrating grate systems, have grate bars attached to a frame that _______ to remove
the ash.
a. rotate
b. move
c. vibrate
d. turn Correct Ans-c
11. The vibration also serves to aid combustion by _______ out the bed of burning biomass.
