Card Set Information
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?
What kind of pliers are good for pulling cotter pins?
What type of pliers would you use to bend thin metal or form loops in wire?
Which wrench is usually the stongest, fastest, and safest in a tool kit?
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?
What type of guage would you use to measure an actuating switch clearance?
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?
When installing a cotter pin, ensure the prong that bends over the bolt shank does not exceed the bolt?
What is the maximum number of bolts you can safely wire together in series when using the double-twist method?
Which technical order (TO) tells you the appropriate temperature setting for a wire-marking machine?
Wires and wire bundles should be supported by clamps or grommets at intervals of no more than?
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?
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?
A fixed union between two metallic objects that permits good electrical conductivity between them is?
Never use cushioned clamps in any bonding or grounding connection, because the cushion acts as?
After a bonding or grounding jumper is installed it should read no more than?
Which type of solder is preferred for printed circut boards?
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?
How should you remove a component from a printed circuit board?
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?
To connect component or wire leads to flat perforated terminals, the wrap must be?
What is the heaviest duty soldering iron you normally use in soldering a printed circuit board?
You should clean the circuit board connection within how long after it has cooled?
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?
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?
You must repair a circuit board conductor if it has a nick that extends what part of its width?
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?
What angle is used to trim out damaged foil areas of printed circuit boards?
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?
To convert Centigrade to Farenheight?
How many Btu's does it take to raise the temp. of 5 pounds of water at 5degree F?
5=9/5 = 25
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?
What is a true statement concerning a permanent magnet?
It keeps its magnetism
Which if the following is a good insulator?
The intensity of electrical current flow is measured in?
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?
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?
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?
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?
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?
The full-wave rectifier is used in?
Low-voltage and high-voltage circuits
In an elctronic voltage regulator, the series transistor acts like a?
What do most logic circuits use to define the input or output condition?
To obtain a high output, the inputs to an AND gate must be?
Which logic gate has a high output when all inputs are low?
What unit is used as a circuit-controlling device?
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?
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?
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?
How do you connect and ammeter in a circuit?
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?
The AN/PSM-37 multimeter indicator has how many range scales?
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?
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?
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?
You would troubleshoot a 28-VDC circuit for a blown fuse (short) with a/an?
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?
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?
The number of cells in a normal Ni-Cad battery for a 24-volt aircraft system?
A Ni-Cad battery's seperators are made of nylon and cellophane or _____?
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?
Constant-current charging keeps the current at a value that is predetermined by the?
In an equalized Ni-Cad battery, each cell's voltage is?
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