-
You can remove a difficult screw with a square-shank screwdriver by applying a?
Wrench to the shank
-
Which of the following is a true statement concerning a properly ground tip on a standard screwdriver?
It is square and flat
-
When striking an object with a hammer, the hammer face should be?
Paralled to the work
-
What kind of pliers are mainly for holding or bending flat or round stock?
Combination slip-joint
-
What kind of pliers are good for pulling cotter pins?
Diagonal cutting
-
What type of pliers would you use to bend thin metal or form loops in wire?
Round-nose
-
Which wrench is usually the stongest, fastest, and safest in a tool kit?
Socket
-
What sequence of files would you use to file soft steel?
Start with a second-cut, finish with a smooth file
-
When filing aluminum or lead, you should use a?
Rasp
-
What type of guage would you use to measure an actuating switch clearance?
Thickness
-
A precaution concerning torque wrenches is to?
Never use a torque that has been dropped unless it has been verified
-
Before storing a torque wrench you have used, you should?
Set it at its lowest usable setting
-
Tubing used in aircraft oxygen, fuel, lubrication, fire extinguishing, instruments, hydraulic, and vent lines is?
Aluminum alloy and stainless steel
-
When torquing a bolt assembly, what is the force applied to overcome friction?
Torsion
-
When installing a cotter pin, ensure the prong that bends over the bolt shank does not exceed the bolt?
Diameter
-
What is the maximum number of bolts you can safely wire together in series when using the double-twist method?
Three
-
Which technical order (TO) tells you the appropriate temperature setting for a wire-marking machine?
1-1A-14
-
Wires and wire bundles should be supported by clamps or grommets at intervals of no more than?
24 inches
-
All wire groups or bundles must be tied when supports are more than?
12 inches apart
-
How many nicked or broken wire strands are allowed on 16-guage aluminum wire?
None
-
Solderless terminals are preferred over soldered types mainly because?
They are faster, cleaner, and more uniform
-
What ensures a connector plug and receptacle are not mismated?
Key-and-key way arrangement
-
How much will termofit material, used in compact wire bundles, shrink when heat is applied to it?
Half its original diameter
-
The EMP-hardened cable provides a barrier to?
Electrostatic interference
-
A fixed union between two metallic objects that permits good electrical conductivity between them is?
Bonding
-
Never use cushioned clamps in any bonding or grounding connection, because the cushion acts as?
An insulator
-
After a bonding or grounding jumper is installed it should read no more than?
0.1 ohms
-
Which type of solder is preferred for printed circut boards?
63/37
-
Oxide film is removed from the surface of metals during the soldering process by?
The soldering flux
-
How should you shape a soldering iron's copper tip?
Use a fine file while the tip is cold
-
How should you clean a plated soldering tip?
With an abrasive cloth while the tip is cold
-
Why do we use termal shunts in soldering?
They protect heat-sensitive components
-
You can best determine a soldered connection's quality by?
Giving it a thorough visual inspection
-
Prior to soldering electronic equipment, ensure the equipment is?
Disconnected from the power source
-
How should you test the heat of a soldering iron?
Touch the tip to solder, away from your body
-
How should you remove excess solder from the soldering iron tip?
Wipe the iron on a damp sponge or rag
-
An acceptable tinned wire has?
An insulation clearance equal to the diameter of the wire and wire strands covered with solder, but still visible
-
You should clean the metal you are soldering to?
let the solder adhere properly
-
During soldering, apply the proper amount of solder directly to the?
connection
-
How should you remove a component from a printed circuit board?
Vacuum desoldering
-
What describes a good solder connection?
No pits or holes and has a good concave fillet
-
When making wire connections to turret terminals, wrap the wire around the terminal at least?
180 degrees
-
To connect component or wire leads to flat perforated terminals, the wrap must be?
180 degrees
-
What is the heaviest duty soldering iron you normally use in soldering a printed circuit board?
27 watts
-
You should clean the circuit board connection within how long after it has cooled?
90 min.
-
How should a clinched-lead terminal lay in respect to the printed circuit pad?
Flat on the pad and in the direction of the printed circuit wiring pattern
-
How should you hold a printed circuit board to desolder a component?
Vertically
-
What must you do before soldering gold-plated integrated circuit leads?
Remove their gold plating
-
To clean tinned, lead plated circuit boards use?
a medium bristle brush and alcohol
-
When soldering a module-type package to a printed circuit board, ensure the connection is soldered within?
5 sec.
-
You must repair a circuit board conductor if it has a nick that extends what part of its width?
25 %
-
What angle is used to trim out damaged terminal on a circuit board, the replacement foil should overlap the connecting circuit conductor by at least?
- 0.125 inch
- What angle is used to trim out damaged foil areas of printed circuit boards?
- 45 degrees
-
What is an acceptable substitute for silver solder flux?
Borax and water
-
When soldering a brass fitting to copper tubing, how far should the inner cone of the torch flame be kept from the work?
At least one-half of an inch
-
To convert Farenheight to Centigrade?
F=9/5C+32
-
To convert Centigrade to Farenheight?
C=5/9(F-32)
-
How many Btu's does it take to raise the temp. of 5 pounds of water at 5degree F?
-
-
If an aircraft temp. indicator shows 40 phase C, what is the equivalent Farenheight temp.?
9/5(40)+32 =72+32 = 104degree F
-
What happens when gas is trapped in a cylinder and pressure is applied to the piston?
Volume will decrease
-
When a gas is heated, its pressure will?
Increase
-
What is a true statement concerning a permanent magnet?
It keeps its magnetism
-
Which if the following is a good insulator?
Glass
-
The intensity of electrical current flow is measured in?
Amperes
-
What is the total current in a series circuit that has an applied voltage of 24 volts and a total resistance of 8 ohms?
E=I(R) 24=I(8) = 3 amperes
-
The basic function of electricity is to?
Transfer energy
-
In a series circuit, when 24 volts is applied and total resistance is 6 ohms, what is the amperage?
Et=24 It=__ Rt=6 24/6= 4
-
The total resistance in a parallel circuit is always?
Less than the smallest resistance in the circuit
-
The rule that indicates the direction a current-carrying conductor will move in a magnetic field is the?
Right-hand rule for motors
-
What is the effective electromotive force (EMF) in a motor?
The applied voltage minus the CEMF
-
In a circuit with both coils and capacitors, voltage and current will be?
Out of phase
-
AC generators operate on the principle of?
Induction
-
One disadvantage of the electrolytic capacitor is that?
It has a high-power loss
-
Transformers in low-frequency circuits require a?
core of low-reluctance magnetic material
-
The extent to which the primary's magnetic lines cut across the secondary is expressed as?
Coefficient of coupling
-
AC power is connected directly to what part of an induction motor?
Stator
-
The current in a two-phase induction motor is?
90 degrees out of phase
-
The difference between the speed of the stator's rotating magnetic field and the rotor is called?
A slip
-
Which of the following is a true statement concerning normal operation of a transistor?
The collector-base junction is reverse biased
-
How does the movement of majority carriers in a PNP transistor compare with that in an NPN?
They move from emitter to collector in both types
-
What is the difference between the PNP and NPN transistor symbols?
The direction of the arrow on the emitter lead
-
Which transistor amplifier configurations have their signal voltages in phase?
Common base and common collector
-
What half-wave rectifier component limits the peak current?
Resistor
-
The full-wave rectifier is used in?
Low-voltage and high-voltage circuits
-
In an elctronic voltage regulator, the series transistor acts like a?
Variable resistor
-
What do most logic circuits use to define the input or output condition?
Voltage polarity
-
To obtain a high output, the inputs to an AND gate must be?
High
-
Which logic gate has a high output when all inputs are low?
NOR
-
What unit is used as a circuit-controlling device?
Switch
-
If you're troubleshooting a parallel circuit with one leg open, and ammeter connected in series with the whole circuit gives what kind of amperage reading?
Low
-
What would the ohmmeter read for a shorted component in a series-parallel circuit?
Lower than normal or zero
-
The voltmeter indicates voltage, but it actually measures?
Current
-
In measuring an unknown voltage with a voltmeter, what range ahould you use first?
Highest meter range
-
If your ohmeter won't adjust to zero when your ready to use it, you should?
Change the battery
-
An ohmeter indicates an open circuit when it reads?
infinity
-
How do you connect and ammeter in a circuit?
Series
-
The AN/USM-33 multimeter uses crystal diodes to change?
AC Voltage to DC Current
-
Before taking the first current measurement, you should set the range select switch on the?
0-600 range
-
The AN/PSM-37 multimeter indicator has how many range scales?
Three
-
What should you do to change the AN/PSM-37 meter's range or function switch without removing the test leads from the circuit?
Push in the push-to-open-and-reset control
-
To measure circuit current, you connect an AN/PSM-37 multimeter in?
series in the circuit
-
Use the range button on the Fluke multimeter to?
move the decimal point
-
On the Fluke multimeter, what does it mean when the H symbol is shown on the meter display?
Touch-hold mode is in use
-
When measuring resistance with the Fluke multimeter, what does the OL on the display indicate?
Overload
-
The thermoswitch tester can check switches with a Farenheight range of?
200 to 1000 phase
-
When do you turn the anti skid tester POWER switch on?
Just after you turn on the aircraft power
-
What is the maximum current output of the inginter circuit tester?
5.5 milliamperes
-
You should perform a preoperational check of the igniter circuit tester at least?
Prior to each day's use
-
What does each unit in the test stand incorporate for safety during maintenance?
Power disconnect switch
-
What must be done to apply a reactive load to a generator under test?
Load a power factor
-
If a circuit has two equal resistors connected in series, a voltmeter connected across an open resistor will read?
Applied voltage
-
You would troubleshoot a 28-VDC circuit for a blown fuse (short) with a/an?
ohmmeter
-
In checking for a shorted relay in a parallel circuit, you must?
Isolate the component
-
Which of the following statements is true concerning nickel-cadmium batteries and lead-acid batteries?
They must be stored and charged in seperate areas
-
The greatest hazard in working around a lead-acid battery is?
Sulfuric acid
-
The neutralizing agent for sulfuric acid is?
Bicarbonate of soda
-
Lead-acid batteries and Ni-Cad batteries are stored and charged in seperate areas because accidentally mixing the electrolytes could?
neutralize the elctrolytes, causing excessive heat, and the battery may explode
-
How many cells does a 24-volt, lead-acid battery have?
12
-
The number of cells in a normal Ni-Cad battery for a 24-volt aircraft system?
19
-
A Ni-Cad battery's seperators are made of nylon and cellophane or _____?
permion
-
A fully charged battery should have a specific gravity reading of?
1.275 to 1.300
-
What do you use to adjust a lead-acid battery's electrolyte level?
Self-leveling syringe
-
Constant-current charging keeps the current at a value that is predetermined by the?
Manufacturer
-
In an equalized Ni-Cad battery, each cell's voltage is?
0 Volt
-
Pitting corrosion of aluminum or magnesium alloy first appears as?
White powdery deposit on the metal surface
-
All metal components of your systems should get a comprehensive inspection for corrosion?
During all inspections
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