Volume 2
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- Class II liquids are liquids with flash points
- At or above 100F and below 140F
- what is the minimum flash point of jp-8 jet fuel?
- 100F
- the density of a fuel is its
- weight perunit volume
- static dissipater additive (sda) is added to jp-8 to
- increase conductivity
- what is the human response to fuel vapor exposure at 10,000 ppm for 10 mins?
- Intoxication
- when you are filling a cone roof with floating pan tank, what is the maximum fill rate
- 3 feet per second until the pan is floating
- what type of outer garments should you wear around fueling operations to reduce the risk of static charges?
- Combination blends of 50 percent cotton and 50 percent polyester
- after use, fuel-soaked rags should be placed in
- self-closing metal containers
- what class fire is a jp-8 pipeline fire?
- class B
- how far from an underground fuel storage tank vent must you post danger signs?
- 50 feet
- how many yellow bands will be displayed on an eight-inch JP-8 pipeling?
- three
- how much lighting is required for jp-8 tank catwalk?
- 2-foot candlepower
- How far must an emergency shut-off switch be from a diesel fuel fillstand?
- no closer than 25 feet
- Fire reporting telephone stations should be located within
- 300 feet of all fixed fueling systems
- what is the actual cause of electrical shock?
- current
- As an expection to Air force directives, under what circumstances may you work on an energized circuit?
- It it is to prevent possible injury to others or it critical missions will be jeopardized by interruption of service
- what form is used to block and tag switches during electrical work for the protection of personnel?
- AF Form 979
- What publication provides detailed procedures on blockin and tagging electrical circuits?
- AFI 32-1064
- how often must employees receive respirator training?
- Annually
- With a second-degree burn, the skin is best described as
- Blistered
- What should you do for a person suffering from heat cramps?
- give the victim large amounts of water
- the greatest danger when the heart stops beating is lack of
- oxygen to the brain
- when performing a one-person CPR, how many complete cycles of 15 chest compressions and two ventilations should be performed before rechecking the victim for a pulse?
- Four
- How far should you depress the breastbone when performing CPR?
- 1.5 to 2 inches
- what is the key waste reduction?
- Source reduction
- Which of the following unbalanced forces closes an automatic valve that has been opened by force pushed against its diaphragm?
- Gravity and spring tension
- Which law is used to help determine the size pump required to move liquid?
- second
- how is mechanical adcantage (MA) determined?
- MA= resistance/effort
- what would the mechanical advantage be if you use a block and tackle with seven supporting ropes, counting the rope you use to pull on?
- 7-1
- What determines the ease which a screw can be turned?
- Depth of pitch
- what formula is used to determine power?
- power= work/time
- what does a direct drive generally use to absorb vibration?
- Flexible coupling
- what is a major difference between a gas and liquid?
- A liquid is far less compressible than a gas
- Using Pascal's principle, determine the pressure exerted in an enclosed 10-inch cylinder when a connected 1-inch cylinder has 15 psi applied to it?
- 150 PSI
- What would be the net difference between the opposing forces of an automatic valve that has a 2-inch seat, an effective diaphragm area of 6 inches, and an inlet pressure of 50 psi?
- 200 PSI
- what is the lifting forces of a liquid called?
- Buoyance
- which of the following units of measurement would indicare volume of flow?
- Barrels per hour
- which of the following physical factors affects the behavior of liquids in both rest and motion?
- Gravity, atmospheric pressure, and applied forces
- what happens to fuel's kinetic engery and the pressure it will exert when it passes through a venturi?
- Energy increases and pressure decreases
- A complete cycle of pressure waves and reversals of flow during hydraulic shock occupies the time required for
- two round trips
- what determines the intensity of the excess pressure ina water-hammer wave?
- the amount of extinguished velocity
- Which metric prefix equals 1,000?
- Kilo
- How many decigrams make one gram?
- 10
- Metric hammers are sized in
- grams
- metric wrenches are sized in
- millimeters
- what would probably happen if you use a metric wrench on an SAE bolt?
- Strip the bolt head
- what type of screw would you use a crosspoint screwdriver on?
- Cross-slotted
- How are nonadjustable wrenches sized?
- by the distance between the parallel flats of the nut
- what type of punch is used to mark a point in metal?
- Center
- what type of chisel is most commonly used for cutting sheet metal?
- Flat
- A hacksaw's adjustable frame will accommodate what size blades?
- 8-16 inches in length
- when cutting tubing with a tubing cutter, how much pressure should you apply to the adjusting wheel after each turn of the cutter?
- 1/4 turn on the adjustment wheel
- to produce a correct size flare, how should you insert the tubing into the flaring block?
- Equal to the depth of the bevel in the flare block
- what is the minimum radius that tubing may be bent?
- 5 times the diameter of the tubing
- Required commercial publications not in the Air force publication system are purchased
- through local procurement
- how do you file commercial publications that are purchased locally?
- on a designated shelf file, in some logical order
- how are commercial technical publications filed with regular Tos?
- They are filed separately with their own index and are made available to everyone
- when is project documentaion due to DESC for the following program year?
- 1 February
- Most DESC emergency projects involve a leak or spill and of what nature?
- Environmental
- The purpose of AF Form 980, Caution Tag, is to
- Identify situations out of the ordinary
- Which Air Force form is used to record all blocking and tagging actions done on primary electrical circuits on Air force installations?
- Af Form 269, Electrical Facilities Safe Clearance
- For how long must safe clearance forms be retained after release
- 1 year
- the signature of the supervisor in the "Released by" block of the safe form certifies that
- all personnel and temporary grounds are clear and all lines and equipment are ready for service
- what must be done immediately after an electrical shock victuim is removed from the circuit?
- Give medical attention
- the reading on a voltmeter indicates
- electrical pressure
- Ohmmeters are used to check for
- resistance
- when you are using your multimeter in the ohmmeter function, one step would be to
- select the scale you need by a switch on the meter
- when using the multimeter as an AC voltmeter, you must
- connect the meter in parallel with the circuit
- the most important saftey precaution you shold apply when using a multimeter is to
- refrain from touching the meter leads while the circuit is energized
- the easiest and simplest meter to use for measuring current flow in a circuit is
- a clamp-on meter
- the smallest part of a substance that has all the characteristics of the substance is
- a molecule
- which of the following statements best describes a positive ion?
- An atom that lost an electron and has more protons
- what effects causes an electric motor to produce mechanical enegery?
- Magnetism
- which of these is the smallest curren that can be fatel under certain conditions?
- one-tenth of 1 amp
- what is used to move a sufficient number of electrons to perform a useful job?
- Voltage
- Electrical resistance is the
- opposition to current flow
- a 3-horsepower motor consumes how much power?
- 2,238 W
- A magnet that is magnetized by induction from an external source is called
- an artifical magnet
- when do the magnetic lines of force in a magnet cross
- Magnetic lines of force never cross each other
- How can a polarity be created and the strength of the magnetic lines of force around a conductor be increased
- by looping the conductor into a coil
- what items are required to construct an electromagnet?
- A coil of wire, a core material and current flow
- what are the three things needed to produce voltage by the principle of electromagnetic induction?
- Magnetic field, conductor, and relative motion
- what type of current flow cannot be transformed from a higher voltage to a lower voltage?
- Direct current
- What type drawing shows a cross-sectional view of equipment?
- Detail
- what type diagram is a simple drawing showing the relationship of system major parts?
- Block
- what type diagram makes use of diagram symbols instead of pictures to show components?
- Connection
- Which of the following best describes a schematic diagram?
- Soemtimes called a one-line diagram and is very useful in troubleshooting
- How much current flow is in a circuit with 24 volts applied and with 72 ohms resistance?
- .33 amperes
- What is the current flow in a series circuit with a 20-ohm resistor, a 25-ohm resistor and a 30- ohm resistor connected to a 25-volt power supply?
- .33 ampered
- the joint resistance of a parallel circuit is equal to the applied voltage divided by the
- total current
- what is the power in watt consumed by a circuit with 10 volts applied and a resistance of 12 ohms?
- 1,200 watts
- what completes an electrical cycle of an AC generator?
- one positive and one negitive alternation
- how is the measurement of the apparent power of an AC electrical system expressed?
- Kilovolt-amperes
- what unit of measurement is used when calculating the inductance of a coil?
- Henry
- What is the capacitance of a 125 uf capacitor when converted to farads?
- .00125 F
- Kirchhoff's voltage law states that
- the algebraic sum of the voltages around a closed loop must equal zero
- A 100-volt AC motor records 20 in-line ampered, and the inline wattmeter shows only 1,936 watts being consumed. what would be the power factor of the AC circuit
- 88 Percent
- the purpose of an electrical generator is to convert
- mechanical engery to electical engery
- what type of generator has brushes riding on the commutator to carry the current to an external circuit?
- DC type
- what is the open-circuit voltage of a lead-acid storage battery
- 2.2 volts
- what is the primary voltage of a transformer that has a secondary voltage of 240 volts and is rated 1 to 3 turns ration?
- 80 volts
- Which of these items is not a part of a DC motor?
- Stator
- In a DC motor, how are coil ends from the armature windings attached to a commutator (riser)?
- Soldered
- In what way does a DC shunt motor have the field coils and armature connect?
- In parallel
- what part of a three-phase motor is connect to the supply voltage?
- Stator
- the magnetic field of a three-phase motors are
- either wye or delta connected
- which of these statements characterizes three-phase motors?
- they are either single-or dual-voltage motors
- the motor that requires some starting means is the
- Single-phase AC motor
- The squirrel-cage winding has high-inductive reactance and is placed beneath the
- wound rotor section
- what should you connect, and how, to operate a single-phase dual-voltage motoe on high voltage?
- Run windings in series
- How many basic types of scross-the-line motor controls are there?
- two
- the device used in most magnetic across-the-line motor controllers to reduce chatter is
- shaded rings
- the methods used to open the contacts on an across-the-line magnetic controller are
- spring tension and gravity
- A temperature-sensitive decice to operate a magnetic across-the-line starter automatically is a
- thermostat
- What type of motor enclosed is designed to prevent liquids or solids from entering the motor except at indirect angles?
- Splash-proof
- What type of bearing should be used in a verically mounted motor?
- Ball or roller
- When you clean a motor with compressed air, what is the maximum air pressure to use?
- 25 PSI
- what should be your first check on a motor that seems to be overheating?
- Ventilation
- the endplay of a motor should not exceed
- 1/64 of an inch
- An indication of an open rotor in a squirrel-cage motor is
- the motor slowing down under load
- A motor that operates slowly may have a
- Deficient voltage supply
- A hexagon window on a plug fuse indicates that the amperage rating is between what values?
- .5 and 15 amps
- What is the first step in replacing a fuse?
- De-energize the circuit