7.4 Flashcards by Anthony datius

Measurement of current with a conventional [a] must be connected in [b] with the electrical circuit.

ammeter

series

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With a clamp meter, the clamp only needs to be [a] around a [b] to measure the [c].

clamped
wire
current

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The [a] flows through the conductor and induces a [b] through the clamp meter jaws.

current

magnetic field

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For the classic method, the clamp meter is only able to detect [a] current.

alternate

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Clamp meter with special sensor, known as a [a] sensor, has an advantage over classic method as it can detect [b] and [c] current.”

hall effect
alternate
direct

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A [a]meter is used to perform a [b] check to detect a break in the electrical wire/conductor.

multi

continuity

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Digital ammeters measure [a] and calculate [b] by this formula, [c].”

CHECK AGAIN ANS IS NOT FULLY CORRECT

Specified Answer for: a	
voltage drop
Specified Answer for: b	
current
Specified Answer for: c	
voltage divided by resistance

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Analogue ammeters measure current by detecting the [a] produced by the [b] instrument

Specified Answer for: a
magnetic field
Specified Answer for: b
moving coil

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Measuring voltage is the same as [a] in comparison with a hydraulic system.

Specified Answer for: a

pressure difference

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One has to simutaneously [a] the line to verify loose contacts.

Specified Answer for: a

shake

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To measure continuity of a long length of wire on the aircraft, the meter is connected to the [a] of the aircraft.

Specified Answer for: a

ground

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[a] law is defined as [b] = [c] x [d].

Specified Answer for: a	
ohm's
Specified Answer for: b	
voltage
Specified Answer for: c	
current
Specified Answer for: d	
resistance

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The insulation meter will display [a] resistance when the wire is measured against the ground, if the [b] is damaged.”

Specified Answer for: a
low
Specified Answer for: b
insulation

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One should expect to get a [a] resistance reading from the insulation meter when measuring between 2 good wires on same connector.

Specified Answer for: a

high

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An [a] meter can measure up to MΩ, whereas a conventional [b]meter only able to measure up to KΩ.

CHECK AGAIN ANS IS NOT FULLY CORRECT

Specified Answer for: a
hall effect
Specified Answer for: b
analogue multi

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[a] must be disconnected prior to an insulation test.

Specified Answer for: a

devices

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T477W is the approved tester to be used on [a] and [b] aircraft [c] area.

Specified Answer for: a	
Boeing
Specified Answer for: b	
Airbus
Specified Answer for: c	
fuel tank

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Bonding meters uses a 4 wire method, also called [a] measurement method.”

Specified Answer for: a

kelvin

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4 wire measurement method, 2 test leads supply [a] the other 2 test leads measure [b].”

Specified Answer for: a
current
Specified Answer for: b
voltage drop

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For the 4 wire measurement system, the [a] test leads are closer to the resistance than then [b] test leads.”

Specified Answer for: a
voltage
Specified Answer for: b
current supplying

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The 2 shorter leads are for [a] as used on Metrahit 27I

Specified Answer for: a

current

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The surfaces must be [a] before conducting bonding test

Specified Answer for: a

cleaned

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Speed of signal travelling in the coaxial cable is know as [a], which is in reference to the speed of [b].

Specified Answer for: a
velocity factor
Specified Answer for: b
light

An open-end cable will be indicated by a [a] with the same [b] as the input impulse.

Specified Answer for: a
reflection
Specified Answer for: b
polarity

Advantage of TDR over DMM is one able to find on the [a] of the cable where the [b] is.

Specified Answer for: a length Specified Answer for: b break

Loop resistance tester, it delivers the [a] and it is converted into [b] to the shield.

Specified Answer for: a current Specified Answer for: b electromagnetic field

[a] level is recognised as 0ft altitude.

Specified Answer for: a | Sea

[a] pressure is supplied to the [b] port by the air data tester to simulate [c].

``` Specified Answer for: a Negative Specified Answer for: b static Specified Answer for: c altitude ```

[a] pressure is supplied to the [b] probe by the air data tester to simulate [c].

``` Specified Answer for: a Positive Specified Answer for: b pitot Specified Answer for: c airspeed ```

Standby compass is used when all [a] instruments have failed.

Specified Answer for: a | navigation

The process of moving the aircraft on a compass rose on the ground to [a] the standby compass is known as compass [b].

Specified Answer for: a calibrate Specified Answer for: b swing

Standby compass calibrator [a] the existing magnetic field and creates an [b] magnetic field.

Specified Answer for: a neutralises Specified Answer for: b artificial

A compass [a] is needed to record standby compass deviations.

Specified Answer for: a | deviation card

A standby compass is referenced to the magnetic [a].

Specified Answer for: a | north

Fuel quantity probe relies on the principle of [a].

Specified Answer for: a | capacitance

Shield of wire serves to protect against [a] damages and [b] interference.

Specified Answer for: a mechanical Specified Answer for: b electromagnetic

The clamp from Loop Resistance Tester is called [a] and the clamp connected to multimeter is called [b]

Specified Answer for: a Current Inducer Specified Answer for: b Current Monitor

Classic current clamp meter mainly used for measuring?

Which test equipment is generally used to locate a breakage in aircraft wiring?

Ohmmeter

What must the user check the test equipment prior to conducting a test on avionics systems?

Calibration date

Intermittent breaks in the wire is verified by?

Simultaneously shaking

Which tester is used for continuity check?

Ohmmeter

What does a multimeter produces to measure voltage?

Current

Hall effect current clamp meter can measure?

AC & DC

Which test equipment is used for low resistance, milliohms?"

Bonding Tester

A standby compass shall not deviate by more than _____ degrees on each heading as per FAA regulations.

What reading would be displayed on the insulation tester when used for checking a wire?s insulation?

Resistance

How is a short circuit in the line is displayed on the Time Domain Reflectometer?

Negative Impulse

Insulation testers are used for checking wire insulation?

Integrity

How is a conventional ammeter connected to an electric circuit to measure current?

Series

Which test equipment is used for detecting and locating defects in coaxial cables or twisted wire pair cables?

Time Domain Reflectometer

Which avionics system of an aircraft can be tested using the air data tester?

Barometric altimeter.

Which test equipment is used for high resistance measurements?

Insulation Tester

What element flowing through an electrical circuit to be defined as amperage?

Electrons

Which principle allows the current clamp meter detect current flowing through a conductor?

Voltage

What is the standard sea level atmospheric pressure?

29.92 in Hg

When using the Metrahit 27 I type of bonding meter, any faulty contact will be indicated by?

Leads Open