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WorksheetsCombustion Quiz
Total questions: 41
Worksheet time: 29mins
Fuel is a material utilized to produce energy in the form of (a)
A good fuel is _________, ___________, &, __________ ____
(a)
Proper and complete combustion requires ___, ______, & ______
(a)
The three states of matter are ___, ___, & ___
(a)
Meeasurement of a fuel oils ability to flow is (a)
(a) is added to natural gas to provide a leak detection odor
(a) is that part of coal driven off when heated and burns as vapor
Moisture in coal can either be _____ or _____
(a)
Although (a) provides heating value to a fuel, it is a pollutant and can cause corrosion of metal in the plant
Coal in storage will slowly oxidize and may ______ _______ if it reaches 140 degrees F
(a)
Coal enters (a) the point of air admission in an underfeed stoker
Coal enters (a) the point of air admission in an overfeed stoker
Pusher blocks or shoes distribute coal in an (a) stoker
overfeed stokers are classified as _____ & ______
(a)
An _______ ___ in the furnace retains heat and assist in the rapid ignition of the raw coal entering an ________ stoker
(a)
A (a) system reduces the size of coal to a fine powder and burning in suspension
Two of the most common elements which produce heat are
Hydrogen, Carbon
Carbon, Sulphur
Hydrogen, Sulphur
Fuels were formed by
Time, Temperature, Pressure
Time, Temperature, Sun
Time, Temperature, Pressure, Sun
The precise amount of air required for complete combustion based on chemistry is:
Theoretical
Excess
Adiabatic
Products of combustion leaving the stack colored with particles of unburned carbon are/is:
Fly ash
Soot
Smoke
Fuel oil is classified:
Bunker A, B, C, D
#2, 3 ,4 ,5
#2, 4 , 5, 6
Temperature to which a fuel oil must be heated to maintain combustion when exposed to a flame is:
Flash Point
Fire Point
Ignition Point
Volatility
Residual fuel oil is/are:
5
5 & 6
4, 5, 6
Heating value of #6 fuel oil is approximately:
110,000 btu/gal
50,000 btu/gal
150,000 btu/gal
Natural gas is primarily
Ethane
Hexane
Methane
The lowest ranking of coal is
Bituminous
Semi-bituminous
Lignite
Anthracite coal contains more _____ than bituminous coal
Volatile matter
Fixed carbon
Ash
Bituminous coal required a/the _______ furnace than anthracite
Larger
Smaller
Same
The retort is part of a ______ stoker
Underfeed
Overfeed
Crossfeed
Under and Overfeed
A grate is part of a ______ stoker
Underfeed
Overfeed
Crossfeed
Over and Underfeed
Coal is fed into the furnace from the underfeed stoker by the:
Pushrod
Piston
Ram
Screw
Pushrod and Piston
Coal burns on the grate in an _______ stoker
Underfeed
Overfeed
Both
Neither
Primary air enters the overfeed stoker
through the grate
above the grate
with the fuel
When the temperature of a fuel oil increases, it's viscosity ______
Remains the same
Increases
Decreases
It's not affected by temperature
The lowest temperature at which a fuel oil will flow is its ____ point
Flash
Fire
Pour
Viscosity
Fuel oil with a low flash point would be
Easy to pour
Used only in high pressure plants
Used either in low or high pressure plants
Dangerous to utilize
Air used to atomize fuel oil is _____ air
Control
Excess
Secondary
Primary
Air contains approximately __% oxygen by volume
5
21
50
79
_________ must be heated to reach the required temperature for combustion
#2 fuel oil
#6 fuel oil
Coal
Natural Gas
The viscosity of a fuel oil is expressed in
Specific Gravity (SG)
Fire Point Units (FPU)
Saybolt Universal Seconds (SSU)
British Thermal Units (BTU)
A biological material used as a renewable energy fuel
Lignite
Biomass
Peat
Coal
