Boiler Test 5
- 1.
What is added to the coal in a tvpical FBC unit to ensure that the heated compounds become relatatvly inert?
- A.
Coke
- B.
Limestone
- C.
Sulfur
- D.
Calcium sulphate
Correct Answer
B. Limestone -
- 2.
NOX 2 emissions are reduced in a fluidized bed furnace due to the
- A.
Removal of nitrogen compounds.
- B.
Reduced combustion temperatures.
- C.
Levels of excess air.
- D.
Increased combustion temperatures.
Correct Answer
B. Reduced combustion temperatures. -
- 3.
IN atmospheric fluized bed cornbustion units, the fuet content by mass of the turbutent inert material is usually less than ________%
- A.
10
- B.
15
- C.
25
- D.
2
Correct Answer
D. 2 -
- 4.
Rhe combustion in a fluized bed combustion: unit can be controlled of a furnace temperature of ____________deg f reduce nox emission
- A.
932
- B.
1832
- C.
1562
- D.
248
Correct Answer
C. 1562 -
- 5.
Before coal can be burned in a fluidized bed combustion unit, it is necessary to heat the inert bed materialto about ________deg F
- A.
1832
- B.
1112
- C.
2732
- D.
3632
Correct Answer
B. 1112 -
- 6.
A tvpical time to heat the: bed in a fluidized bed combustion unit to fuet-ignition temperature is _________hours.
- A.
4
- B.
5
- C.
3
- D.
1
Correct Answer
D. 1 -
- 7.
A low gas pressure cutoff switch the_________ burrner from operating when the gas pressure in the supply-line drops below the pressure necessary to maintain a stable flame at the burner'
- A.
Promotes
- B.
Prevents
- C.
Opens
- D.
Raises
Correct Answer
B. Prevents -
- 8.
In a multi spud burner each spud is equipped with a ____ valve so thati it may be removed for cleaning
- A.
Cleaning
- B.
Shutoff
- C.
Globe
- D.
Regulating
Correct Answer
B. Shutoff -
- 9.
Steam atomizing burners require cleaning
- A.
More often than the air atomizer'
- B.
More often than mechanical atomizers
- C.
Less often than mechanical atomizers
- D.
UsuallY onlY about twice a Year'
- E.
Just as often as mechanical atomizers
Correct Answer
C. Less often than mechanical atomizers -
- 10.
Using preheated air with pulverized coal
- A.
Dries the coal.
- B.
Helps reduce ash build uP.
- C.
Reduces air Pollution.
- D.
Allows lower grades of fuel to be used'
- E.
Increases the heating value of the coal'
Correct Answer
A. Dries the coal. -
- 11.
By what two methods are ntrogen oxides forme in natural gas fired boilers?
- A.
Thermal NO2
- B.
Fuel NO2
- C.
Or both
Correct Answer
C. Or both -
- 12.
- What are the 3 classifications of oil burners?
- A.
Mechanical atomizing burners
- B.
Steam atomizing burners
- C.
Rotary cup oil burners
- D.
All of the above
Correct Answer
D. All of the above
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Feb 20, 2012Quiz Edited by
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Feb 20, 2012Quiz Created by
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