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

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Number of cards 123

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