Mod 7 Final Flashcards
Zero ohms
Twice the operating voltage
Zero Volts
Remove all LRU’s in the circuit
A Voltage less than the Supply Voltage
0.05 ohm
Turning the handle with the test leads touching and the reading should be - Zero ohms
Brighter
Re-protect the structure
D/C Voltage
Disconnected C/B open
The resistance of the cable and test leads
insulation resistance tester
Conductors which are required to carry lighting currents
Note: Secondary Conductors are used to keep aircraft at same potential
The leads of an ohmmeter should be replaced if their resistance is greater than
(a) 0.05 ohms
(b) 0.5 ohms
(c) 1 ohm
(c) 1 ohm
What cable would use where temperature are going to exceed 200 degrees C.
(a) Aluminium
(b) Silver Plated
(c) Nickel plated
(c) Nickel plated
Nickel plated is suitable for 260^C and silver plated is suitable up to 200^C.
Question says exceed
An aluminium oxide layer on a conductor will do what when the temperature is increased?
(a) Become thicker
(b) Become thinner
(c) Remain the same
(a) Become thicker
No less than 19 strands
Less than 15 inches
Not more than 24 inches
Standoffs and clamps
What is the minimum radius of bends in wire bundles
a) Not less than 10x the outside diameter of the cable loom
b) Not less than 10x the outside diameter of the smallest wire in the loom
c) Not less than 10x the outside diameter of the largest wire in the loom
c) Not less than 10x the outside diameter of the largest wire in the loom
What is the allowable bend radius for RF/Coax cable
a) Not less than 10x the outside diameter of the Coax cable
b) Not less than 3x the outside diameter of the Coax cable
c) Not less than 6x the outside diameter of the Coax cable
c) Not less than 6x the outside diameter of the Coax cable
How do you check the separation between wiring and mechanical controls, what is allowable?
a) By pulling hard on loom or mechanical controls, 1/2 inch clearance
b) By a strain gauge, 2 inches from mechanical controls
c) With light hand pressure (to wire or controls), 1/2 inch to any mechanical control /moving parts
c) With light hand pressure (to wire or controls), 1/2 inch to any mechanical control /moving parts
What must be done to wiring in bundles to avoid insulation damage between/across wires
a) Spacers should be used between wires
b) The wire bundles should be wrapped with tape
c) The wires should be combed prior to tying
c) The wires should be combed prior to tying
Where are tie wraps not allowed?
a) On small cable looms
b) On long cable looms
c) Near motion/controls areas
c) Near motion/controls areas
Can wire tie wraps be installed by hand without a tie gun?
a) Yes, if you pull the tie hard by hand
b) No
c) Yes, if you pull the tie wrap with a pliers
b) No
When weighing an aircraft by the weighbridge method, the aircraft is:
a) only levelled laterally.
b) jacked and levelled.
c) resting on the wheels.
c) resting on the wheels.
For purposes of calculating weight and C of G position, an adult male (with baggage) is
considered to have a mass of:
85 kg.
65 kg.
75 kg.
85 kg.
Cargo placed aft of the datum will produce a:
neutral moment.
negative moment.
positive moment.
positive moment.
In aeronautical weighing terms:
all arms for forward of the reference datum are positive (+) and all arms aft of the reference datum are negative (-).
all reference datum are as per company procedures.
all arms for forward of the reference datum are negative (-) and all arms aft of the reference datum are positive (+).
all arms for forward of the reference datum are negative (-) and all arms aft of the reference datum are positive (+).
When weighing an aircraft, the hydrostatic weighing units are positioned:
either under or on top of each jack.
one under each jack.
one on top of each jack.
one on top of each jack.
Points forward of the datum point are:
negative.
neutral.
positive.
negative.
Weight and Centre of Gravity Schedule is required by:
all aircraft above 2730 kg MTWA.
all aircraft not exceeding 2730 kg MTWA.
all aircraft regardless of weight.
all aircraft above 2730 kg MTWA.
If a new Weight and Centre of Gravity Schedule is issued, the old one must be retained for:
one year.
two years.
six months.
six months.
The Datum point on an aircraft, for measuring C of G position could be:
the front bulkhead.
anywhere on the aircraft.
the nose of the aircraft.
anywhere on the aircraft.
A load sheet:
need not be carried on the aircraft if one remains at base.
is always carried on the aircraft.
is never carried on the aircraft.
is always carried on the aircraft.
If the C of G of an aircraft with a full complement of fuel is calculated. Then:
the C of G will always be within limits if it was within limits with full fuel tanks.
the C of G must be recalculated with zero fuel to ensure it will still be within limits.
the C of G will only need to be recalculated if the fuel weight is behind the aircraft C of G position.
the C of G must be recalculated with zero fuel to ensure it will still be within limits.
A Weight and Centre of Gravity Schedule must be signed by:
the IAA.
the pilot.
a Licensed aircraft engineer.
a Licensed aircraft engineer.
What angle of turn will double the weight of the aircraft?
30°
45°
60°
60°
A load Sheet must be signed by:
a licensed aircraft engineer.
the Commander of the aircraft.
the Loading Officer.
the Commander of the aircraft.
The basic equipment of an aircraft is:
that equipment which is required for every role of the aircraft for which the aircraft is operated plus unusable fuel.
all equipment including fuel and oil necessary for a particular flight.
the crew equipment, and other equipment including fuel and oil necessary for a particular flight.
that equipment which is required for every role of the aircraft for which the aircraft is operated plus unusable fuel.
Aircraft below 5700kg not used for commercial air transport purposes are required to be
reweighed:
every 2 years.
every 5 years.
as required by the IAA.
as required by the IAA.
When weighing an aircraft using electronic strain gauge cells, the load cells go:
as a single unit or combination of units under the aircraft wheels.
between undercarriage and aircraft.
between top of jack and the aircraft.
as a single unit or combination of units under the aircraft wheels.
Inclinometers for levelling aircraft are usually found in the:
wheel well.
cockpit.
rear spar
wheel well.
Fore and aft limits of the CG:
are determined by the pilot when calculating the loading data.
are specified by the manufacturer.
are determined by the licensed engineer after a major check and weighing.
are specified by the manufacturer.
Variable load is weight of:
crew, their baggage and equipment relevant to role.
fuel, oil and non-expendable equipment relevant to role.
basic weight plus operating weight.
crew, their baggage and equipment relevant to role.
Aircraft measurements aft of the datum are:
either positive or negative.
positive.
negative.
positive.
An aircraft which has its C of G forward of the Forward Limit:
the take-off run will not be affected.
will have a longer take-off run.
will have a shorter take-off run.
will have a longer take-off run.
When an aircraft has been reweighed under EU OPS, what should be done to the old Weight and Balance Report?
Kept in the aircraft logbook.
Destroyed after 3 months.
Kept in the weight and balance schedule.
Destroyed after 3 months.
Large aircraft must be reweighed:
after two years from manufacture only.
after two years from manufacture then at periods not exceeding five years.
at periods not exceeding five years.
after two years from manufacture then at periods not exceeding five years.
Increasing the weight of an aircraft:
increases the glide range.
has no affect on the glide range.
decreases the glide range.
has no affect on the glide range.
A weighing cell is based on the variation of:
induced voltage with displacement.
resistance with strain.
differential currents with stress.
resistance with strain.
Where would you find documented, the fore and aft limits of the C of G position?
In the aircraft Maintenance Manual.
In the Flight Manual (or the documentation associated with the C of A).
In the technical log.
In the Flight Manual (or the documentation associated with the C of A).
When weighing an aircraft with load cells:
only the main wheels are weighed.
the aircraft is jacked.
a load cell should be placed under each set of wheels.
a load cell should be placed under each set of wheels.
Before weighing an aircraft, it is levelled and put into the:
straight and level position
rigging position
weighing position
rigging position
What is meant by empty weight?
Basic weight only.
Basic weight minus unusable fuel plus oil.
Basic weight plus unusable fuel plus oil.
Basic weight plus unusable fuel plus oil.
Weight and Centre of Gravity Schedule is to be raised:
in triplicate, for the IAA, the operator and the maintenance organisation.
in duplicate, for the IAA and the operator.
once only, for the IAA.
in duplicate, for the IAA and the operator.
Previous weighing records are:
retained for 2 yrs only.
are kept with aircraft records.
destroyed after 5 yrs.
are kept with aircraft records.
Where would you find the information on the conditions for weighing the aircraft?
Maintenance Manual.
Technical Log.
Flight Manual in conjunction with the documents associated with the CofA.
Maintenance Manual.
The basic weight of an aircraft is:
the pilot, flight crew and their luggage.
the passengers, baggage and fuel.
the aircraft, minimum equipment, unusable fuel and oil
the aircraft, minimum equipment, unusable fuel and oil
Load Sheet is compiled in the order of:
Variable Load, Fuel Load, Disposable Load, Basic Weight.
Basic Weight, Variable Load, Disposable Load, Fuel Load.
Basic Weight, Variable Load, Fuel Load, Disposable Load.
Basic Weight, Variable Load, Disposable Load, Fuel Load.
A Multiplier resistor is used to extend the working range of
a) Voltmeter
b) Ohmmeter
c) Ammeter
a) Voltmeter
Ratiometers are extremely versatile and accurate when used as a measuring instrument, but require a power supply that has a voltage that is
a) Constant value
b) Alternate Current
c) Can fluctuate
c) Can fluctuate
A Safety Ohmmeter is used to check the insulation resistance of detonator circuits ( fire bottles) and uses a Voltage and restricted Current of
a) 30 Volts DC, 10 mA
b) 250 Volts, 100 mA
c) 30 Volts AC, 10 mA
a) 30 Volts DC, 10 mA
When using an Insulation Resistance test set in a circuit that contain capacitive elements, such elements are liable to cause
a) The reading to be high
b) Unreliable readings
c) Have no effect
b) Unreliable readings
An Electrodynamometer is use to measure AC or DC
a) Watts
b) Current
c) Voltage
a) Watts
A Transformer/rectifier meter ( Clamp meter) can measure
a) Watts
b) Current and Voltage
c) Voltage only
b) Current and Voltage
When drilling carbon,
a) use high-speed, low-feed
b) Speed is not important, only enough pressure to prevent delamination
c) use low-speed, low-feed
a) use high-speed, low-feed
To effectively drill Kevlar and fibreglass
a) diamond coated drills are most effective
b) a drill bit which shears material is required
c) A “X” point lasts longer
b) a drill bit which shears material is required
for a composite structure, inspection may be carried out with which NDT methods
a) Eddy Current, ultrasonic, X rays, thermography,
b) Ultrasonic, X rays, thermography, and ring tests
c) Acoustic emission, holography, Eddy Current, Ultrasonic
b) Ultrasonic, X rays, thermography, and ring tests
Ultrasonic inspection of monolithic construction is presented in what form to the operator
a) A permanent image
b) No image is possible
c) Scans made of a single waveform at its most basic
c) Scans made of a single waveform at its most basic
Metal cones, flares, bowls and bell-mouth shapes requires?
a) The material to be shaped over mandrels while mounted on a spinning lathe
b) pressing over a form, usually extrusion
c) Superplastic forming
a) The material to be shaped over mandrels while mounted on a spinning lathe
Aluminium sheets should always be
a) Stored upright, on long edge, supported, clear of the floor, on rack
b) Laid flat, on wooden pallets, max 25 sheets or 10” high
c) Cool dark area, orientation is not important
a) Stored upright, on long edge, supported, clear of the floor, on rack
traight snips can cut?
a) straight lines, inside and outside curves
b) straight lines
c) cut straight lines and outside curves
c) cut straight lines and outside curves
How should a rivet be removed?
a) Drill smaller than the rivet shank, break off rivet head
b) Carefully use a cold chisel to shear off rivet head
c) Drill at same diameter as rivet shank, the rivet will fall out easily
a) Drill smaller than the rivet shank, break off rivet head
3 methods of Method of Adhesion:
a) Diffusion or Adsorption, Mechanical, Chemical
b) Wetting, Electrostatic adhesion, interlocking
c) Mechanical, Chemical scarfing
a) Diffusion or Adsorption, Mechanical, Chemical
The joint design should minimise certain stress configurations, which are?
a) Cleavage and Tension Shear stress
b) Compressive and Shear stress
c) peel and cleavage
b) Compressive and Shear stress
examples of High-temperature adhesives
a) Cyanoacrylates and polyurethanes
b) Acrylics
c) phenolics, polyimides, and bismaleimides
c) phenolics, polyimides, and bismaleimides
Chopped strand mat
a) is also known as unidirectional glass cloth
b) is always non-structural
c) Has a high strength to cost ration and is frequently used for non primary structural applications
b) is always non-structural
Kevlar material is usually:
a) a soft cloth, yellow, organic fibre that is strong and tough
b) Is always used in sold plates, such as armor
c) is used only in closed molds
a) a soft cloth, yellow, organic fibre that is strong and tough
A warp clock indicates
a) the direction of rotation required of the warp fibres
b) the layup in tapes for repair
c) where the selvedge should be located
a) the direction of rotation required of the warp fibres
Kevlar is a highly abrasive as is best drilled with
a) “W” point design on drill bit
b) carbide or diamond materials,
c) carbide only as diamond materials cannot be used
a) “W” point design on drill bit
ou are doing trouble shooting on a cable that has an intermittent open circuit, this can be caused by?
a) Wet Arc Tracking in the cable
b) Sharp bend radius in the cable
c) Cable is tied with a tie wrap
b) Sharp bend radius in the cable
Before using an Electronic Bonding test set you should
a) Adjust the Digital Display to read zero
b) Turn the Generator handle to get voltage on the test terminals
c) Check the Battery Voltage
c) Check the Battery Voltage
A cable is passing through a frame and it is found to be chafing, what would cause this?
a) Arc Tracking
b) Missing a grommet or sleeve
c) Bend in cable too tight
b) Missing a grommet or sleeve
When using a twin twisted cable to carry an ARINC signal between computers you should
a) Earth the cable screen at the Transmitter end
b) Earth the cable screen at the Receiver end
c) Earth the cable screen at both ends
c) Earth the cable screen at both ends
When connecting a Wattmeter to read Power in a circuit
a) Connect the Fixed coil across the load “Voltage” and the Moving coil in series with the load “Current”
b) Connect the Fixed and Moving coil in series with the load
c) Connect the Fixed coil in series with the load “Current” and the Moving coil across the load “Voltage”
c) Connect the Fixed coil in series with the load “Current” and the Moving coil across the load “Voltage”
Before using a Bonding test set, the 6 foot lead has the two prongs shorted by the prong of the 60 foot lead, what will the meter read?
a) Infinity ohms
b) Mid scale
c) Zero ohms
c) Zero ohms
To locate a fault in a COAX cable with a Time Domain Reflectometer TDR you should.
a) Use the VOP for the Part number of COAX cable used.
b) Adjust the frequency of the TDR to match the impedance of the cable
c) Leave the LRUs connected
a) Use the VOP for the Part number of COAX cable used.
When using a Dielectric Test Set to check the Dielectric strength of a Starter Motor Field coil you should apply a voltage of what value
a) 2 X Operating Voltage + 500 Volts DC
b) 2 X operating voltage + 1000 Volts AC
c) Operating Voltage + 500 Volts AC
b) 2 X operating voltage + 1000 Volts AC
Before using an Electronic Pitot/Static test set on an aircraft you should
a) Put a notice on the power supply connector for the test set
b) Connect the Pressure hose of the test set to the Static drain
c) Close the Cross bleed valve on the test set
a) Put a notice on the power supply connector for the test set
Before using a crimping tool to crimp a Pin you should check the tool for
a) That the selector Dial is set to 22AWG
b) Serviceable Label, Calibration Date, Crimping Jaws with a Go-No Go gauge
c) The colour of the handle matches the BIN colour code on the Pin
b) Serviceable Label, Calibration Date, Crimping Jaws with a Go-No Go gauge
A Short in a COAX cable will show on a Time Domain Reflectometer TDR screen as a
a) No pulse
b) Positive pulse
c) Negative pulse
c) Negative pulse
When using a 3 1/2 digit multimeter the max reading it will indicate is
a) 9999 or 10000 counts
b) 1999 or 2000 counts
c) 999 or 1000 counts
b) 1999 or 2000 counts
When testing the ATC transponders on an aircraft you should use a Faraday Cage by placing it
a) Over one of the antennas of the system you are testing
b) Over the TCAS antennas
c) Over the two antennas of the ATC system you are not testing
a) Over one of the antennas of the system you are testing
What is a Portable Maintenance Access Terminal PMAT used for on an aircraft
a) A tool to remove electrical terminals
b) To get access to the Main Electronic Centre MEC
c) Multipurpose Avionic Maintenance Device to trouble shoot systems and load data
c) Multipurpose Avionic Maintenance Device to trouble shoot systems and load data
When you disconnect an electrical connector as a temporary measure you should
a) Hang the connector upside-down
b) No need to protect the connector
c) Place it in a plastic bag with a hole in the bag at the lowest point to remove moisture
c) Place it in a plastic bag with a hole in the bag at the lowest point to remove moisture
In a system of limits and fits, the capital letter H7 represents:
a) the type of fit for a hole
b) the type of fit for a shaft
c) the type of fit for a 7mm diameter hole
a) the type of fit for a hole
Tolerances are classified in two ways, these are:
a) Dimensional and isometric.
b) Upper and lower.
c) Dimensional and geometric
c) Dimensional and geometric
In a system of limits and fits, the small letter g7 represents:
a) the type of fit for a hole
b) the type of fit for a shaft
c) geometry diameter 7mm
b) the type of fit for a shaft
A torque tube under load can be checked by:
a) dti
b) feeler gauge
c) strain gauge
c) strain gauge
The shaft based system of fits and clearances:
a) is always preferred
b) is only used in the USA
c) is rarely used
c) is rarely used
When carrying out a millivolt drop check on a circuit, what is an approximate guide for a correct reading
10 millivolts for every 5 amps flowing
5 millivolts for every 10 amps flowing
10 millivolts for every 15 amps flowing
5 millivolts for every 10 amps flowing
Crimping electrical terminals are colour coded, the colour indicates
Both the crimping tool and size of cable to be used
The type of crimping tool to be used only
The cable size to be used only
Both the crimping tool and size of cable to be used
The number of dots impressed on the insulation of a PIDG terminal during crimping indicates that?
The crimp is properly formed
The correct terminal has been used
The correct tool was used on the terminal
The correct tool was used on the terminal
If copper sulphate is used on magnesium alloy it will:
effervesce to a copper colour.
have no effect.
effervesce to a black colour.
effervesce to a black colour.
In a composite repair lay-up, how much should each layer extend beyond the layer below it?
2 - 3 inches
1 - 2 inches
3 - 4 inches
1 - 2 inches
To enable a composite panel to dissipate static charge it would be sprayed with:
polyurethane paint.
ferrous paint.
aluminium paint.
aluminium paint.
Chopped strand mat is a good general purpose mat because:
it has short fibres.
it gives equal properties in all directions.
it is a stiffer than woven cloth.
it gives equal properties in all directions.
How do you reduce or remove electrostatic charges which may build up on fibreglass surfaces?
No special treatment is necessary because fibre glass is an insulator.
The surface is treated with a special conductive paint.
The surface is impregnated with copper strips.
The surface is treated with a special conductive paint.
Removal of a scratch from a sheet of metal requires:
polishing.
blending.
burnishing.
burnishing.
A non-destructive testing technique which is suitable for inspecting for delamination in Redux bonded structure of light aluminium alloys is:
ultrasonic.
eddy-current.
magnetic flow.
ultrasonic.
Carbon fibre should never be in direct contact with aluminium alloy structure because:
carbon fibre does not bond well to aluminium alloy
there is a possibility of corrosion occurring
too much stress transfer will take place
there is a possibility of corrosion occurring
