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Boilers > Steam Boilers Module 15 Session 9 > Flashcards

Steam Boilers Module 15 Session 9 Flashcards

1
Q 
The temperature at which fuel oil will give off a vapor that will ignite readily when exposed to an open flame is its \_\_\_\_\_\_\_\_\_\_\_\_ point.
A. Flash
B. Fire
C. Pour
D. Viscosity
A

A. Flash

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2
Q

In order to determine the heating value of coal in Btu per pound, the ____________.
A. Proximate analysis is used
B. Ultimate analysis is used
C. Percentage of volatile matter is needed
D. Rank of coal is needed

A

C. Percentage of volatile matter is needed

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3
Q 
The temperature at which fuel oil will give off a vapor that burns continuously is its \_\_\_\_\_\_\_\_\_\_\_\_ point.
A. Flash
B. Fire
C. Pour
D. Viscosity
A

B. Fire

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4
Q 
Rank refers to the \_\_\_\_\_\_\_\_\_\_\_\_ of the coal.
A. Ash content
B. Btu content
C. Clinker formation
D. Degree of hardness
A

D. Degree of hardness

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5
Q 
Grade refers to the \_\_\_\_\_\_\_\_\_\_\_\_  of the coal
A. Size, heating value, and ash content
B. Size only
C. Clinker formation
D. Degree of hardness
A

A. Size, heating value, and ash content

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6
Q 
A proximate analysis of coal provides information regarding its \_\_\_\_\_\_\_\_\_\_\_\_ content.
A. Moisture
B. Oxygen
C. Carbon
D. Sulfur
A

A. Moisture

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7
Q 
An ultimate analysis of coal provides information regarding \_\_\_\_\_\_\_\_\_\_\_\_.
A. Elements present in the coal
B. Moisture content
C. Volatile matter
D. Fixed carbon and ash content
A

A. Elements present in the coal

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8
Q 
Bituminous coal has a high \_\_\_\_\_\_\_\_\_\_\_\_ content
A. Lignite
B. Fixed carbon
Q. Moisture
D. Volatile
A

D. Volatile

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9
Q 
Anthracite coal has a high \_\_\_\_\_\_\_\_\_\_\_\_ content.
A. Lignite
B. Carbon
C. Moisture
D. Volatile
A

B. Carbon

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10
Q 
When the temperature of fuel oil is raised, its viscosity \_\_\_\_\_\_\_\_\_\_\_\_.
A. Remains the same
B. Is raised
C. Is lowered
D. Cannot be affected by heat
A

C. Is lowered

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11
Q 
The lowest temperature at which fuel oil will flow is its \_\_\_\_\_\_\_\_\_\_\_\_ point.
A. Flash
B Fire
C. Pour
D. Viscosity
A

C. Pour

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12
Q

Fuel oil with a low flash point would be ____________.
A. Desirable to use
B. Used only in high pressure plants
C. Used in either high or low pressure plants
D. Dangerous to use

A

D. Dangerous to use

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13
Q 
Which type of coal is most likely to have problems with spontaneous combustion when being stockpiled?
A. Lignite
B. Anthracite
C. Bituminous
D. Anthracite stoker
A

C. Bituminous

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14
Q 
Which type of fire extinguisher is the correct type to use on fuel oil fires?
A. Foam or dry chemical
B. Soda water
C. Carbon tetrachloride
D. Feedwater
A

A. Foam or dry chemical

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15
Q 
Which weight of fuel oil must be heated to reach the required temperature for combustion?
A. No. 2
B. No. 3
C. No. 6
D. No. 10
A

C. No. 6

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16
Q 
Higher numbered fuel oils produce \_\_\_\_\_\_\_\_\_\_\_\_ lower numbered fuel oils.
A. More Btu per gallon than
B. Less Btu per gallon than
C. The same amount of Btu as
D. One-half the Btu of
A

A. More Btu per gallon than

17
Q 
Air that controls the rate of combustion is \_\_\_\_\_\_\_\_\_\_\_\_ air.
A. Control
B. Excess
C. Secondary
D. Primary
A

D. Primary

18
Q 
Air that controls the combustion efficiency is \_\_\_\_\_\_\_\_\_\_\_\_ air.
A. Control
B. Excess
C. Secondary
D. Primary
A

C. Secondary

19
Q 
Air supplied to the burner that is more than the theoretical amount needed to burn fuel is \_\_\_\_\_\_\_\_\_\_\_\_ air.
A. Control
B. Excess
C. Secondary
D. Primary
A

B. Excess

20
Q 
Which type of combustion is when all fuel is burned using only the theoretical amount of air supplied?
A. Complete
B. Incomplete
C. Perfect
D. Theoretical
A

C. Perfect

21
Q 
Which type of combustion is when all the fuel is burned using the minimal amount of excess air?
A. Complete
B. Incomplete
C. Perfect
D. Theoretical
A

A. Complete

22
Q 
Gases of combustion that come in contact with the boiler heating surface before combustion is completed cause a(n) \_\_\_\_\_\_\_\_\_\_\_\_.
A. Loss of draft
B. Increase in chimney temperature
C. Formation of soot and smoke
D. Increase in heat transfer
A

C. Formation of soot and smoke

23
Q 
Air needed for the combustion of fuel is made up of approximately \_\_\_\_\_\_\_\_\_\_\_\_ % oxygen and \_\_\_\_\_\_\_\_\_\_\_\_ % nitrogen.
A. 80; 20
B. 21; 79
C. 50; 50
D.30; 70
A

B. 21; 79

24
Q 
Carbon dioxide (CO2) in the flue gas indicates \_\_\_\_\_\_\_\_\_\_\_\_.
A. Complete combustion
B. Incomplete combustion
C. A high chimney temperature
D. Perfect combustion
A

A. Complete combustion

25
Q 
Carbon monoxide (CO) in the flue gas indicates \_\_\_\_\_\_\_\_\_\_\_\_.
A. Complete combustion
B. Incomplete combustion
C. A low chimney temperature
D. Complete combustion
A

B. Incomplete combustion

26
Q 
The heating value of a fuel is expressed in \_\_\_\_\_\_\_\_\_\_\_\_.
A. Specific Gravity
B. Fire Point Units
C. Viscosity
D. British thermal units
A

D. British thermal units

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