1982585
Descripción
Test por opticknight, actualizado hace más de 1 año
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Creado por opticknight
hace casi 10 años
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Pregunta 1
Pregunta
How are petroleum fuels in liquid form compared to water?
Respuesta
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They weigh the same as water at 60 degrees Fahrenheit
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They are heavier than air
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They are lighter than water
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They weigh the same as air at 70 degrees Fahrenheit
Pregunta 2
Pregunta
Compared to air, petroleum fuels in vapor form have which of the following characteristics?
Respuesta
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They weigh the same as air at 60 degrees Fahrenheit
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They are heavier than air
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They are lighter than air
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They weigh the same as air at 70 degrees Fahrenheit
Pregunta 3
Pregunta
Petroleum fuel vapors remaining from a spill are extremely dangerous because of which factor?
Respuesta
-
They readily evaporate
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They tend to remain close to the ground
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They saturate porous material
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They saturate the ground
Pregunta 4
Pregunta
Because of its high flash point, JP-5 is the only jet fuel authorized for fueling aircraft on navy ships. When JP-8 is mixed with JP-5, what happens?
Respuesta
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The flash point of JP-8 raises and it becomes safe for shipboard use
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The flash point of JP-5 is lowered and it becomes unsafe for shipboard use
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A chemical reaction takes place that makes both fuels unusable
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Based on the amount of each fuel in the mixture, either JP-6 or JP-7 is created
Pregunta 5
Pregunta
What is the minimum flash point of JP-5?
Respuesta
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128 Degrees Fahrenheit
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130 Degrees Fahrenheit
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140 Degrees Fahrenheit
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142 Degrees Fahrenheit
Pregunta 6
Pregunta
If rags or clothing become soaked with JP-5, the JP-5 becomes highly flammable. What term describes this action?
Respuesta
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Saturation
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Wicking
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Candling
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Soaking
Pregunta 7
Pregunta
Specific gravity determinations are correlated to what temperature according to ASTM standard D1250-80?
Respuesta
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45 Degrees Fahrenheit
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100 Degrees Fahrenheit
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75 Degrees Fahrenheit
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60 Degrees Fahrenheit
Pregunta 8
Pregunta
What is the measure of a liquid's resistance to flow called?
Respuesta
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Volatility
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Solvency
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Flash point
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Viscosity
Pregunta 9
Pregunta
What is the minimum percentage of gasoline vapor, by volume, for it to burn or explode?
Respuesta
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1%
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3%
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5%
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6%
Pregunta 10
Pregunta
What term describes the lowest temperature at which fuel vaporizes enough to form a combustible vapor?
Respuesta
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Freezing point
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Flash point
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Auto-ignition temperature
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Boiling point
Pregunta 11
Pregunta
Why is a fuel spill on an asphalt surface more damaging than a fuel spill on a concrete surface?
Respuesta
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The vapors will spread faster on the asphalt surface
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The asphalt surface will lose its color
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The fuel will dissolve the asphalt surface
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The asphalt will react to the fuel and spontaneously combust
Pregunta 12
Pregunta
What is the NATO number for JP-5?
Respuesta
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F-40
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F-42
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F-46
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F-44
Pregunta 13
Pregunta
What does the prolonged inhalation of fuel vapors cause?
Respuesta
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Dizziness, nausea, death
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Vertigo
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Cancer
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Leukemia
Pregunta 14
Pregunta
From the standpoint of fire and explosion, which fuel is the safest?
Respuesta
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MOGAS
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JP-8+100
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JP-5
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JP-8
Pregunta 15
Pregunta
What visual standards must jet fuel meet to be acceptable for delivery to aircraft?
Respuesta
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Clean and bright
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Clear and free of water
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Clear and sparkling
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Clean and colorless
Pregunta 16
Pregunta
Which of the following is NOT a form of water contamination found in fuels?
Respuesta
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Dissolved
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Hanging
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Entrained
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Free
Pregunta 17
Pregunta
What are the most common types of sediment found in fuel?
Respuesta
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Paint and rubber
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Metal and rust
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Rust and sand
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Sand and metal
Pregunta 18
Pregunta
Which statement gives the description for entrained water?
Respuesta
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Dissolved water absorbed in fuel that is NOT visible
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Free water that has NOT settled to the bottom
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Water-in-fuel emulsions
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A mixture of fresh and salt water
Pregunta 19
Pregunta
The division between course and fine sediment is made at?
Respuesta
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1 micron
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10 microns
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100 microns
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1,000 microns
Pregunta 20
Pregunta
Which of the following is a description of microbiological growth in fuel?
Respuesta
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Dark colored, fibrous, and stringy
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Dark colored, fibrous, and ball shaped
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Straw colored, mayonnaise-like, and stringy
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Straw colored, mayonnaise-like, and ball shaped
Pregunta 21
Pregunta
The most common emulsion is the water-in-fuel emulsion. What does it look like?
Respuesta
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A light-to-heavy cloud
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A heavy-to-light cloud
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A dark, reddish haze
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A brown haze
Pregunta 22
Pregunta
Which mechanical method, if any, is used to separate commingled fuels?
Respuesta
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Settling
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Filtering
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Centrifuging
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None
Pregunta 23
Pregunta
A representative sampling of a large stock of packaged fuel revealed contamination sufficient to make the entire supply suspect. Further samples are taken, labeled, and sent to be tested. What were the first and subsequent samples taken?
Respuesta
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A composite sample, and the others were routine samples
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A routine sample, and the others were special samples
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A routine sample, and the others were composite samples
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A special sample, and the others were routine samples
Pregunta 24
Pregunta
If adjustment of the light bulb holder is required, what position should the filament on the light bulb be in after the adjustment is made?
Respuesta
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Up
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Down
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Vertical
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Horizontal
Pregunta 25
Pregunta
Fuel sample containers used for sediment and water tests must be made of what construction?
Respuesta
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Glass with metal top
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A nonmetallic material with glass linings
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Glass bottle with nonmetallic top
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Metal with glass linings
Pregunta 26
Pregunta
Why should two millipore filters be used when a sediment test is conducted?
Respuesta
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To increase the speed of filtration
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In case one is ripped or torn during the filtration cycle
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To allow sediment to be trapped between the two
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To eliminate any fuel color effect and it increases accuracy
Pregunta 27
Pregunta
When preparing to conduct a sediment test with the CCFD, you should fill the polyethylene bottle with how much fuel?
Respuesta
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500 ml
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600 ml
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700 ml
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800 ml
Pregunta 28
Pregunta
What is the main function of the water detection component of the CCFD?
Respuesta
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To measure free water
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To measure dissolved water
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To detect salt water
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To detect fresh water
Pregunta 29
Pregunta
A sample tested indicates that more than 20 ppm water is present. What additional test must you perform?
Respuesta
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Test a second standard sample and double the results
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Test another standard sample in the same manner to verify the accuracy of the first sample, and then log the results
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Test a second sample one-half the size of the standard sample and double the results
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Test another standard sample and divide the results by 2
Pregunta 30
Pregunta
What method does the NAVIFLASH flash point tester use to ignite combustible vapors?
Respuesta
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Open flame
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Electric spark
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Heat sensor
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Thermo imaging
Pregunta 31
Pregunta
What does FSII mean?
Respuesta
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Fuel system initial installation
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Fuel system internal instruments
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Fuel system icing inhibitor
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Fuel system internal inhibitors
Pregunta 32
Pregunta
What type of light source, if any, should you use when operating the refractometer?
Respuesta
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Fluorescent or incandescent bulb
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Natural sunlight
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Ultra-violet
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None
Pregunta 33
Pregunta
After adding 2 ml of water to the fuel for a FSII test, how long must the sample then be shaken?
Respuesta
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1 min
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2 min
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3 min
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4 min
Pregunta 34
Pregunta
What is the minimum use level for USN and USMC aircraft that require FSII?
Respuesta
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.01%
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.02%
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.03%
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.04
Pregunta 35
Pregunta
What instrument is used to measure the specific gravity of petroleum products?
Respuesta
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Handimeter
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Beaker
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Gravity gage
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Hydrometer
Pregunta 36
Pregunta
To be acceptable for delivery to aircraft, jet fuels must NOT contain how much free water?
Respuesta
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10 ppm
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15 ppm
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2 mg/l
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5 mg/l
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