問題一覧
1
The function of ring laser gyro is to measure
angular rotation
2
Electromagnetic compatibility is achieved by
Shielding, screening, earthling, bonding and interference filters
3
The colour that produced by DU which used during inflight engine starting and cross bleed message is
Magenta
4
The color used for middle marker is
amber
5
A typical fiber optic connector is
coupling type with lens fitted
6
The ACARS is used to
transmit or receive automatically or manually generated reports or messages to or from a ground station
7
The cabin crew can get access to the cabin applications via
flight attendant panel or internal wireless data link
8
Suppose failure in level E software this will cause
no effect
9
Which section will summarize the plan and test result:
software Verification plan
10
Software can be modified by
using the same rules as to modifications to hardware
11
If the magnetic field is parallel to the Y plate the direction of beam movement will be
vertical axis
12
Rudder control
yaw
13
When handling PCBs labeled ESDS the precaution are taken
isolate electrical power before installing on aircraft
14
Failure system in the aircraft according to software error cause a significant reduction is safety margin which cause
injures to occupants
15
Touching connector pins or other exposed conductors could cause
damage to component may result
16
When incorporating an aerial cable it must be
positioned separately from the loom
17
The angle between the reflected wave and the normal is called
the angle of reflection
18
The refractive index of a core that is uniform and undergoes and abrupt change at the core- cladding boundary is what type of fiber
Step index fiber
19
Before removing an assembly from an aircraft, with regards to HIRF, you must first ensure that
there is minimum current flow between you and the assembly
20
Fibre Optic basic functions
To convert an electrical input signal to an optical signal ,To send the optical signal over an optical fibre ,To convert the optical signal back to an electrical signal
21
The American Global Positioning System (GPS), also called NAVSTAR
uses 24 satellites, with three or more spares, in orbit at any one time
22
All the information necessary for maintenance and trouble shooting is memorized in
Non Volatile Memory
23
Fly-By-Wire system Flight control surfaces are all
Electrically-controlled, Hydraulically-activatedElectrically-controlled, Hydraulically-activated
24
In fly by wire the maximum deflection of aileron is
25degree
25
The devices Ability to dissipate the energy of discharge or withstand current levels involved is known as
device ESD sensitivity. Or ESD susceptibility
26
The phase shift between the electric field oscillation and magnetic field oscillation is
90⁰
27
The refractive index of the core varies gradually as a function of radial distance from the fibre centre this is
graded - index fibre
28
In fly by wire how many flight control computer are there
seven computers
29
Fibre optic cable consists of
a silica glass core with a cladding having a lower refractive index
30
The code for red colour in RGB colour production is
100
31
Collection of data where the computer gets specific information is
Databases
32
How many accelerometers are there in the INS system
two accelerometers
33
The core size which is typically around 8 to 10 micrometers is related to
Multimode Fibres
34
What is the Software Media
Device that contains a copy of the software
35
In airbus core on board information system (OIS) a servicing tool used for the refueling operation is a part of
avionics domain
36
The global positioning system (GPS) use the same principle as
DME
37
Primary flight display (PFD) and navigation display (ND) are two main display units that together
make up the EFIS for commercial aircraft
38
What is the effect of a level 1 software failure
Loss of aircraft and /or fatalities
39
Level A
Catastrophic failure
40
The function of ring laser gyro is to measure
angular rotation
41
F
ailure conditions which prevent continued safe flight and landing
42
Ground loops are prevented by
ground only one end of the
43
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
0.05 ohm
44
Rudder control
yaw
45
Which Document provides guidance to aircraft constructors of software
DO-178B/ED
46
All passenger seats are addressable means
by the computer which transmit data through the network directly to individual passenger seat
47
In TCAS II the voice command – climb, crossing climb-means
Climb at 1500 ft./min through the intruders altitude
48
The white colour production from the three primary colours represented by
-111
49
Failure may cause crash error or loss of critical function required to safety fly and land aircraft is
Catastrophic
50
To reduce HIRF on radio equipment
ensure all static wicks are in place
51
The Ribbon cables design has
the highest fiber capacity, it can hold 204 fibers in a 0.5 inch cable
52
Before removing a card, electrical power sources should be
isolated
53
Laser gyros, accelerometer and power supply output, computer and memory operation , and temperature parameters continually monitored by
built-in test equipment (BITE)
54
Aircraft communication addressing and reporting systems is used to
download aircraft status reports
55
Unlike the black and white CRT the colour CRT has
three electron guns each dedicated to one of the primary colours, red, green, or blue
56
A single mode fibre operates best with what type of light source
Laser
57
What are interrogator transmitter and receiver frequencies
1030 MHz and 1090 MHz
58
When carrying out a bonding check on a surface protected by anodic film
The anodic film should be removed locally to ensure a good contact
59
According to GPS providing correct timing each satellite carries
a very accurate atomic clock
60
What kind of light is used in fibre optic systems
Infrared
61
The resistance of the wrist strap used as part of uni-static precaution should be
250 kilohm- 1.5 megohms
62
In TCAS IF the monitoring system detects a problem
it switching off the interrogator warns the crew and sends mode S message to ground interrogation
63
Testing of HIRF on aircraft system is done
at and during production and testing (initial certification
64
A computer which is used as a primary source of information or data is called
reference computer
65
Memory that retains data when power is removed is
non-volatile memory
66
An aircraft system allocated a Criticality Category of Hazardous has software level of
B
67
HIRF protection of LRUs is provided by
built in filters and overvoltage circuits
68
When clamping cable looms containing co-axial cables
avoid distortion to it, to maintain the dielectric constant.avoid distortion to it, to maintain the dielectric constant
69
The system which calculates a vertical profile that giver the shortest possible flying time at the lowest fuel consumption is
FMS
70
The avionics bay in the larger aircraft are placed in
below the floor
71
Modification to software will be subjected to the same approval procedures as are applied to
hardware modifications