3 - Tools Flashcards
How many strokes per minute should generally be used with a hacksaw?
55
What type of drill would you use on carbon fibre?
Tungsten carbide
Airbus A340-600 SRM
A micro-shaver is used to:
Mill the rivet head after forming
A&P Technician Airframe Textbook 2-37 and 2-68
How many teeth per inch are there on a fine hacksaw blade?
32
Jeppesen A&P Technician General Textbook Page 13
What is the normal cutting angle of a drill?
59°
Jeppesen A&P Technician General Textbook Page 15
When using a moving coil as an ammeter, the greatest amount of current flows through the:
Shunt
Jeppesen A&P Technician General Textbook Page 3-89
When using the old-style vernier caliper for internal measurements, you should:
Add the nib measurements
Jeppesen A&P General Textbook 9-39
To carry out an insulation test on a wire rated at 115 volts, you would use:
A 250 volt megger
CAAIP S Leaflet 9-1, 4.4.2 (Rule of thumb: megger voltage should be twice the system voltage)
The normal drill angles are:
• Cutting angle: 59°
• Web angle: 130°
• Clearance angle: 12°
Cutting angle 59°, web angle 130°, and clearance angle 12°
The abbreviation “A/F” means:
Across Flats
CAAIP S Leaflet 9-3 Pg.7
A rivet shaver is used to:
Mill the rivet head flush
Jeppesen A&P Airframe Textbook 2-68
A drill and wire gauge has holes numbered:
1 to 80
Jeppesen A&P Airframe Textbook Fig.2-47
A 250 volt megger should not be used on:
Electronic equipment
Leaflet 9-1 4.4.4
If the leads of a megger are held apart, then:
If the handle were turned, the meter would read infinity
A megger has no spring
One megohm is equal to:
1,000,000 ohms
Reamers are used to:
Enlarge holes to accurate dimensions
Jeppesen A&P General Textbook 9-19
The pitch of a hacksaw blade is:
The number of teeth per inch
The web angle of a normal twist drill is:
130°
Jeppesen A&P Airframe Textbook 2-27
The leads of a bonding tester:
Have critical lengths and the resistance of the leads is accounted for
CAIP S EEL/1-6 Para 3-11-2 & CAAIP S Leaflet 9.1 3.10.2(b)
Expanding reamers are used to:
Ream holes of different diameters by adjusting the position of the blades
Jeppesen A&P Technician General Textbook Page 9-19
The main scale on a 24/25 vernier caliper is divided into:
Inches, tenths, and fortieths
CAIP S BL/3-4 2
The vernier height gauge uses the same principle as the:
Vernier caliper
CAIP S BL/3-4 4
One revolution of the thimble of an English micrometer produces a linear movement of the spindle of:
0.025 inch
CAIP S BL/3-5
The pitch of a metric micrometer screw thread is:
0.5 mm
When torque loading, a wrench should be selected where the required value falls:
At the top end of the range
CAIP S BL/6-30 4.5.1
The test equipment normally used to carry out a continuity test on an electrical cable is:
A low reading ohmmeter
CAIP EEL/1-6 4.2.1 & CAAIP S Leaflet 9-1 4.2.1
If all three prongs on a bonding tester were shorted together, the meter would read:
Zero
CAIP EEL/1-6 3.10.2b
The pitch of the screw thread on an English micrometer is:
0.025 inches
Jeppesen A&P General Textbook 9-36
The vernier scale on an English caliper is divided into:
25 equal divisions
Jeppesen A&P General Textbook 9-36
The thimble of a metric micrometer is divided into:
50 equal divisions
The measuring capacity of a Vernier Caliper is:
The length of the graduated scale less the length of the vernier scale
Vee-blocks are manufactured:
In sets of two and identified for use as a set
The metric micrometer reading shown is:
13.37 mm
A ketts saw is used because:
It can cut thicker metal than is required by most repair schemes
Jeppesen A&P Airframe Textbook (described as electrical; capable of cutting sheet up to 3/16 inch thick; caution to prevent blade from grabbing and kicking back)
The gears used in a pistol windy are:
Spur gears
Sun and planet gear reduction using spur gears
Cross cut files:
Cut on the forward stroke only
The correct size spanner for use on a unified 5/16 in. threaded hexagon headed bolt is:
1/2 in A/F
The length of the Vernier Scale in a 24/25 Vernier Caliper is:
0.6 in
What is used to measure the depth of a blend after a corrosion repair?
Dial Test Indicator
AL/7-14 Page 12; BL/4-20 Page 9
Vacu-blast beads re-used on a steel component after being used on an aluminium component will:
Cause corrosion to the steel component
The main scale on a 49/50 Vernier caliper is divided into:
Inches, tenths, and twentieths
Centre punches are made of:
High carbon steel hardened and tempered
The entire centre punch is hardened and tempered
What type of flutes should be used in a reamer for cutting titanium?
Spiral flutes
BL/6-18 7.1
The depth micrometer reading shown is:
0.261 in
What should be the included angle of a twist drill for soft metals?
90 degrees
Jeppesen A&P Airframe Technician Textbook Page 2-27
What should the point angle of a drill be if it is to be used for drilling titanium (drill size below 1/4 in diameter)?
105 to 120°
BL/6-18 6
How are pin punches classified?
By type and diameter of the small end
The length of the legs is defined as:
The length of the legs
The purpose of a taper tap is to:
Start a thread
Why is the Vee cut in the base of a scribing block?
To trap any dirt that may be adhering to the surface of the marking off table
What is the normal measurement range of an inside micrometer?
2 in. to 12 in.
What is the purpose of target points on a Vernier caliper?
They enable spring dividers to be accurately set.
What are die nuts used for?
They are used to clean up damaged threads.
For what purpose is a Dial Test Indicator used?
To check a round bar for bow.
Which file cut should be used on mild steel?
Double cut.
When cutting thin sheet metal, what type of blade should be used?
A fine blade.
If a circuit shows 4 kW power with separate readings of 400 V and 20 A, what is the power factor?
½ (0.5).
What is the key-seat rule used for?
To mark lines parallel to the axis of a round bar.
When measuring current in a circuit, how should the ammeter be connected?
In series with the circuit.
What is the maximum reading of a 3½‑digit multimeter?
1999.
What is the resolution of a bevel protractor?
5′ (5 minutes).
What reading would an English micrometer show if it has 4 main divisions, 3 sub-divisions, and the 25th thimble division aligns?
0.475 in.
What does an open circuit indicate on an ohmmeter?
Infinite resistance.
At what resistance should ohmmeter leads be replaced?
If their resistance is greater than 1 ohm.
How is torque loading on a spanner determined?
By multiplying the tangential force by its distance of application from the bolt’s axis.
Which electrical measuring device requires a power source?
An ohmmeter.
When using a digital multimeter to measure voltage or current, what type of value is displayed?
RMS values.
What color lead is connected to the Common socket on a multimeter?
Black.
What does the Vernier scale of a bevel protractor read in the given example?
63º 15′ minutes.
What are three‑point micrometers used for?
Measuring internal dimensions.
When would you use a coarse hacksaw blade?
When cutting material of thick cross section.
How should you measure the voltage drop across a component?
By connecting the meter in parallel with the component.
Which reamer is used in a hole that has a keyway?
A spiral fluted reamer.
What is the purpose of a Morse taper on large twist drills?
To provide a positive drive when fitted into a tapered chuck.
What should be the included angle of a twist drill used for cutting hard metal?
118°.
How many threads per inch are on the spindle of an English micrometer?
40 t.p.i.
What does the spring-loaded ratchet on an external micrometer produce?
A pre‑set feel during use.
What is the purpose of the land on a twist drill?
It reduces friction.
What is the moving scale on a Vernier caliper called?
The vernier scale.
What is the reading of the Vernier caliper scale in inches (as shown in the example)?
1.816.
What does the term “cut” of a file refer to?
The arrangement of the teeth.
Why are the teeth of hacksaw blades offset?
To provide clearance for the non‑cutting part of the blade.
How are files classified?
By length, grade, cut, and section.
How are hammers classified?
By weight and type of head.
What does “second cut” indicate on hand files?
It indicates the grade of the file.
What does a full set of BA taps consist of?
A taper tap and a plug tap.
In which direction should the teeth on a hacksaw blade point?
They should point away from the handle.
What is the clearance angle on a normal twist drill?
12°.
How many taps are used when tapping blind holes?
A set of three taps is used.
How is torque loading on a torque wrench calculated?
By multiplying the tangential force by the perpendicular distance to the bolt’s centre.
What are surface plates used for?
For marking out work and testing flat surfaces.
In what units is the main scale of a Metric Vernier Caliper calibrated?
In millimetres and half millimetres.
What is the general point angle of a drill for proper cutting?
59°.
What does the pitch of a hacksaw blade refer to?
The number of teeth per inch.
When using a bench grinding machine, in which direction does the wheel rotate relative to the workpiece?
From the top down towards the workpiece.
Into how many equal divisions is the thimble of an English micrometer divided?
25 equal divisions.
What is the reading on an inch micrometer scale in the given example?
0.483 in.
The vernier height gauge operates on the same principle as which instrument?
The vernier caliper.
What is the pitch of the screw thread on an English micrometer?
0.025 in.
How can an avometer measure alternating current?
It uses a bridge rectifier circuit.
How are taper reamers classified?
By a type number (1 to 10).
How would you verify a suspected high-resistance crimped connection without disconnecting it?
By measuring the millivolt drop across the connection with a millivolt meter.
How would you measure the continuity of a coaxial cable?
With a reflectometer.
How would you check for discontinuities and shorts on a long coaxial cable in situ?
Using a Time Domain Reflectometer.
What should be done if the leads of a bonding tester are damaged?
They should be returned to the manufacturer for repair and calibration.
Which instrument would you use for a continuity test on a circuit with a known resistance?
A multimeter.
How are taper pins classified?
By the length and diameter of the small end.
How should you check live AC circuits for open circuits?
Using a multimeter set to AC volts.
A multiplier resistance is used to extend the working range of which instrument?
A voltmeter.
On a twist drill chart, how are small drills identified?
They have the largest numbers.
What is the Sine Bar used for?
To produce angles using slip gauges.
What linear movement is produced by three turns of the barrel of a vernier micrometer?
0.075 in.
How does a windy drill obtain its power?
It uses an impeller.
If taper reamers are not classified by type number, how are they classified?
By length and diameter of the large end.
What value does an AC voltmeter read?
An average value (RMS).
What is a hydrometer used for?
To check battery electrolyte specific gravity.
What is a pyrometer?
A thermometer for use at high temperatures.
What is a hygrometer used for?
To take a humidity reading.
How does a moving coil meter measure AC?
It is rectified and measures the average value (effectively reading RMS).
What is a countersink tool used for?
To adjust the depth of a countersink.
How are PIDG crimp tools marked?
With coloured handles and the wire crimp size marked on the tool.
When measuring a square waveform with a multimeter, what voltage does it display?
It displays the RMS value.
How would you modify an ammeter (0–1 mA full-scale) to read 10 mA full-scale?
Place a 5.8 Ω resistor as a shunt in parallel with the meter.
What is the internal resistance of a voltmeter?
High.
What is the internal resistance of an ammeter?
Low.
Which drill bit size corresponds to 0.250 in.?
8/32 and letter E.
On which components are needle grease points used?
Small pivoted joints.
What point angle should a flat chisel for aluminium have?
30 degrees.
What is a mill file used for?
Saw sharpening.
What is a rawhide mallet used for?
To give softer blows than a boxwood mallet.
What is a key characteristic of tension files?
They can cut in either direction.
How is the scale on an ohmmeter arranged?
It is cramped at high resistance.
What linear movement is shown by three revolutions of a 40 T.P.I. micrometer?
0.075 in.
What instrument is used for a continuity test?
A low reading ohmmeter.
What is the resolution of a standard Dial Test Indicator?
0.010 mm.
In a moving coil meter, what provides the deflecting force?
A current‑carrying coil pivoted in a permanent magnet field.
What is the force that returns a meter’s pointer to zero called?
The controlling force.
What is the force that moves a meter’s pointer over the scale called?
The deflecting force.
What should be the resistance of an ammeter?
Low, to prevent voltage drop across it.
What should be the resistance of a voltmeter?
High, so that little current passes through it.
When operating a grease gun, what should you do before use?
Clean the grease fitting with a clean, dry cloth beforehand.
