問題一覧
1
Aircraft instruments are classified by the job they perform into three basic kinds
Flight instruments. Engine instruments and navigation instrument
2
EFIS is acronym for
electronic flight instrument system
3
What is the fixed feature of an ADI
The aircraft symbol
4
The basic T instrument layout consists of
Attitude indicator top center - Airspeed to the left. - Altimeter to the right. - Heading indicator under the attitude indicator
5
The term used to describe any aircraft cockpit that features electronic flight instrument displays is called
glass cockpit
6
EFIS is normally consisting of
Primary flight display (PFD). - Multifunction display (MFD). - Engine indicating system (EIS). - Crew alerting system (CAS)
7
All information required to fly the aircraft is supplied on one screen called
PFD
8
On an EADI flight director command bars show
the required path with respect to the actual path
9
The Advantage of using liquid crystal display is
less weight and lower cooling
10
Flight plan MAP information integrated with
electronic horizontal situation indicator
11
An electronic centralized aircraft monitor (ECAM) is a system used in
airbus
12
Typical displays on an EHSI are
VOR, Map, and Plan and weather radar
13
Convert the hexadecimal number 25 into decimal
37
14
The octal number 1001 expressed as a decimal is
513
15
To change a number from decimal to octal: divided by
8
16
The BCN number 10011000 expressed as a decimal is
98
17
Convert the binary number (110010) into decimal number
50
18
Convert the decimal number 15 into binary? 15
= 1111
19
Convert binary number 011101 to octal
35
20
The hexadecimal D
13
21
The hexadecimal F
15
22
The binary number 1010100011100101 in hexadecimal
1010 – 1000 – 1110 – 0101 A - 8 - E - 5 = A8E5
23
COMPUTER MESSAGE 3B4 is
hexadecimal
24
BCD is a
four digits binary number
25
110001001
189base16
26
The decimal number from 0-999 is range
12bit BCD
27
Multiply each bit by 8 n (where n is the weight of the bit), is
octal to decimal technique
28
Multiply each bit by 16 n (where n is the weight of the bit), is
hexadecimal to decimal technique
29
Within a computer controlled flight system, position feedback is converted from
analouque to digital
30
A given Transducer provides a voltage which corresponding to true heading
The voltage can be converted to bits by using: analogue to digital converter
31
The engine indication and crew alerting system (EICAS).is one example of
Informational computer
32
ARINC 629 data is
two cables bi directional
33
Any message transmitted by a bus has
limited time
34
If a signal has a quantity in volts and physical position it is
analogue
35
ARINC 429 bus uses
twisted shielded pairs of wires
36
Parity bit in digital information is used
to check the validity of data information
37
An ARINC data word is bit is 11-29, if bits 11-18 are patched which of the following would be the LSB bit
19
38
ARINC 429 low rate of transmission is
100 Kbits/second
39
ARINC 629 is
Half Duplex
40
Which of the following ARINCs is bi-directional
629
41
On an ARINC 629 data bus, the maximum amount of current mode couplers per data bus is
120
42
Once an ARINC 629 LRU has transmitted massage it will wait how long before transmitted again
until the end of transmit interval
43
The fiber optic data bus links are
bi-directional
44
Two single wires use to transmit 32 bit word in
ARINC 429
45
Which logic gate has both inputs high to get an output
AND gate
46
The two inputs AND gate has
four possible combinations
47
Which logic gate can be represented as a parallel circuit
OR
48
When will a NAND gate give logic 0 at the output
When both inputs are at 1
49
A tri-state device is a modification of the NOT gate which has
three possible outputsthree possible outputs
50
The Boolean expression for an OR gate with the input of A, B, C, and D would be
F= A+B+C+D
51
TTL (AND) logic
the transistor is in series and both transistors must be in the conducting state to drive the output high
52
TTL (OR) logic
the transistor is in parallel and the output is driven high if either of the transistors is conducting
53
When will the NAND and the NOR GATE become a NOT GATE
If inputs connected together
54
The opposite negative form of the original statement or variable is called
complement
55
In the inhibit gate, the inhibit will be logic (1) to
disable the gate
56
The maximum number of digital inputs that a single logic can accept is called
Fan-in
57
A computer required to operate
data bus, address bus and control bus
58
Coded of information that direct to activities of the CPU is called
instructions
59
Data transmit in one direction
simplex
60
Data is usually stored in
ROM
61
What is the purpose of the data bus
It is used to carry data and instructions from one unit to another
62
The Central Processor Unit (CPU) consists of
the ALU and control unit
63
In computer Temporary a registers is
used as temporary storage for instructions and data
64
An optical disk that is said to be a WORM configuration is what type of disk
CD-R
65
RAM is an example of what type of memory
Volatile
66
Temporary storage for instructions and data within the microprocessor
buffers or registers
67
What is a baud
A bit of data
68
What are the main advantages of using fiber optic data transmitted when used in aircraft
Weight and EMI insensibility
69
Type of fiber optic core is
dielectric material
70
What is the relationship between bandwidth and frequency in a fibre optic cable
as the frequency Increased so does bandwidth
71
Convert an electrical input signal to an optical signal is the function of
transmitter
72
Light travels along a fibre optic by
reflection
73
The interaction of light with semiconductor materials is calledThe interaction of light with semiconductor materials is called
Photo electric effect
74
What is the angle of acceptance in the fibre optic cable
the angle at which the light must Strike the fibre for data to be transmitted