Module 5 Test 6

1.

1 point

What are the data bus cables terminated using?

a 75 ohm resistor

a 130 ohm resistor

a 1 ohm resistor

2.

1 point

Why does ARINC data bus system send data to line replacement unit in series?

saves weight

takes less time

more information can be sent

3.

1 point

What logic gate requires two positive voltage to operate?

OR-gate

AND-gate

NAND-gate

4.

1 point

How do you prevent the High intensity Radiated Field entering a fibre optic cable?

use optical isolator couplings

ground fibre at both ends

enclose in metal braid

5.

1 point

The flight management system operating program is altered in-flight by:

flight warning system

pilot

preloaded solid state program

6.

1 point

In ARINC 429, the first 8 bits represents:

destination

source

system parameter

7.

1 point

How long is the flight management system operational program updated?

every 28 days

bi-months

every week

8.

1 point

How do you create a NOT-gate from NOR-gate or NAND-gate?

connect one output to another input

connect the outputs together

connect the inputs together

9.

1 point

What are the alerting modes of a flight management system alerting?

OFST and fail

Message, fail and OFST

fail and message

10.

1 point

How many accelerometers/gyros unit in basic inertial reference system?

4 each

2 each

3 each

11.

1 point

Who is responsible for software changes?

Design authority or aircraft manufacturer

Civil aviation authority

Joint aviation authority

12.

1 point

On cathode ray tube display, the beam deflection control uses:

sinusoidal waveform

rectangular waveform

saw tooth waveform

13.

1 point

How do you prevent the electromagnetic compatibility effects on fibre optics?

steel screening

earth loops at each end of the cable

fibre optics not prone to high intensity radiated field

14.

1 point

On modern aircraft, when are the built in test equipment checks carried out?

continuously when the system is in use

after engine shut down

when that selected

15.

1 point

In Cathode ray tube, what counteracts the magnetic coil effect?

trapezoidal voltage

constant voltage

saw tooth voltage

16.

1 point

What do the aircraft manufacturers do to protect against electro-static device service?

make line replacement unit case thicker

bond line replacement unit twice to airframe

regularly test line replacement unit

17.

1 point

Hexadecimal system is to base:

16

6

64

18.

1 point

What is the ARINC 429 language?

octal

hexadecimal

Binary Coded decimal, binary notation or discrete

19.

1 point

The 3 accelerometers on stable platform are mounted:

orthogonally

parallel to each other

120 degrees apart

20.

1 point

What is the deflection field if the electromagnetic deflection is used?

Sinusoidal waveform

Trapezoid waveform

Square waveform

21.

1 point

What is the dot matrix or light emitting diode construction?

4 x 7 or 9 x 5 rolling end displays

5 x 9 or 4 x 7 rolling end displays

4 x 7 or 5 x 8 rolling end displays

22.

1 point

In order to maintain HIRF protection, bonding checks between airframe and electrical components carrying voltages greater than 50 volts RMS or DC or main earth return should not exceed

1 Megohm

1 ohm

0.05 ohm

23.

1 point

Aircraft heading is:

the angle between the true north and the actual track

the angle between the true north and the desired track

the angle between the true north and the longitudinal axis of the aircraft

24.

1 point

When removing electronic circuit boards from line replacement unit, you should turn off the power and connect a low current path between:

circuit board and the aircraft

you and the circuit board

you and the aircraft

25.

1 point

When considering High intensity radiated field, the manufacturer should ensure all unshielded cables are:

put in metal conduit

checked for corrosion, chafing, fretting or flexing

put in special avionics area

26.

1 point

To turn NOR-gate or NAND-gate into NOT-gate, what do you do?

invert inputs

invert outputs

increase voltage

27.

1 point

Electronic flight instrumental system input to the flight data recorder goes:

indirectly

source isolated

directly

28.

1 point

Cross track, XTK is:

the perpendicular distance from the desired track

the angle in degrees that the aircraft track is left or right of the desired track

the actual track across the earth's surface

29.

1 point

Where is the parity bit installed in data word?

front

middle

end most significant bit

30.

1 point

Aircraft fibre optics commonly uses:

source isolated

modulating frequency on direct read

modulating intensity on direct read

31.

1 point

What does the electro-static device service symbol mean on line replacement unit>

do not touch plug pins or leave them exposed

remove dust caps when line replacement unit in transit

connect wrist strap to approved socket

32.

1 point

For inertial reference system to pass the 'alignment system performance test':

the latitude entered must be within given limits of the latitude computed by inertial reference unit

number 1 and 2 must both have same latitude and the longitude present position entered

entered the present latitude and the longitude must agree with the latitude and the longitude at last power down

33.

1 point

In engine indicating and crew alerting system, when is the maintenance mode available?

on upper screen and lower screen only available on the ground

lower screen only available on the ground

in-flight

34.

1 point

When doing instrument landing system approach and you are below the beam, where is the bug?

level with datum

above the center datum

below the center datum

35.

1 point

On digital flight computer controlled aircraft control surface positional inputs are converted:

analogue to digital

digital to analogue

positional to digital

36.

1 point

When is the maintenance format used?

in air only

ground only

ground and air

37.

1 point

How is multiplication achieved in Arithmetic and logic unit?

by addition

by subtraction

by coupling

38.

1 point

What is meaning about the ARINC 629 is a bi-directional data bus?

line replacement unit can transmit two message at the same time

data can transmit in both directions down the data bus

data can only travel in one direction down the data bus

39.

1 point

If both inputs to NOR-gate are inverted, the output is:

AND-gate

OR-gate

NOR-gate

40.

1 point

Central maintenance computer works to

give red warnings and amber cautions to display in accordance with system

perform in-flight bite and ground tests of aircraft systems, i.e. BITE

perform in-flight bite only

41.

1 point

How many wires in ARINC 629 data bus?

1

4

2

42.

1 point

Gyro-compassing is the term used for:

self-alignment in azimuth

use of the gyro-magnetic compass system to align the platform

self-alignment in vertical

43.

1 point

What logic gate does a parallel circuit represent?

OR-gate

NOR-gate

AND-gate

44.

1 point

Command bars, what makes them move the correct amount?

instrument feedback

calibration

amplifier gain

45.

1 point

In flight director, how are small deviations corrected?

instrument is calibrated at fitment to remove any possible errors

instrument feedback

pilot input

46.

1 point

On electronic flight display, the glide-slope indicator is below the center position. The aircraft should fly:

vertical

up

down

47.

1 point

What does the waveform created by electron beam in Cathode Rat Tube , look like prior to contact with the screen, if deflected by plates?

ramp

rectangular

trapezoid

48.

1 point

What is the main disadvantage of a fibre-optic data bus?

Less strong and durable when compared to twisted pair and coaxial cable

Bend radius and moisture ingress at connections

Expensive to install

49.

1 point

In flight director bars move up in slow increments, what controls their rate/speed?

rate feedback

instrument amplifier gain

position feedback

50.

1 point

Using Inertial navigation system, the aircraft flies:

course directed by ground station

Rhumb line

great circle route