mod5
Short Description
FAA/JAA/EASA...
Description
Module 5 1.
An FMS system, besides controlling navigation, thrust and auto-nav, also provides a) take-off and landing warnings # b) dedicated status and warnings c) GPWS warnings
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EADI sky and ground display is provided by a) synthetic TV signals b) raster scan c) stroke pulse
HSI heading is valid if the heading flag is a) in view b) green c) out of view
A NOR a) b) c)
gate with both inputs inverted becomes a NAND gate AND gate OR gate
An ARINC 429 binary coded decimal data word occupies bits a) 11 to 28 b) 11 to 29 c) 1 to 8
A fibre a) b) c)
optic cable consists of a plastic core with a cladding having a higher refractive index a silica glass core with a cladding having a higher refractive index a silica glass core with a cladding having a lower refractive index
The command bars on an ADI relate to a) path required b) path being followed c) roll indications
The recording medium in an FDR is a) a high density floppy disc b) magnetic tape coated with ferrite c) copper foil coated with ferrite
Convert 0111012 to octal a) 25 b) 33 c) 35
This is exam number 2. 1. #
2. #
3.
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4. called
ARINC 629 databus is a) one cable, bi-directional b) two cables, bi directional c) two cables, uni-directional
Requirements for software control can be found in a) AWN 45 b) JAR OPS c) JAR AWO
Software can be modified by a) licensed avionics engineers b) the manufacturer c) The same rules apply as to modifications to hardware
Two connected fibre optic cable ends are parallel but not quite touching. This is
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6. #
7. #
8. #
a) b) c)
lens connector end to end coupling end fire coupling
A disadvantage of a fibre optic cable is a) shallow bend radius allowed b) couplings susceptible to ingress of fluid c) end terminals are susceptible to environmental contamination
The inside of a CRT consists of a) an oxide coating and rare mercury gas b) a phosphor coating and rare mercury gas c) iodine and rare mercury gas
What kind of light is used in a fibre optic systems? a) Infrared b) Visible c) Ultraviolet
Typical displays on an EHSI are a) VOR, Map, Plan and weather radar b) VOR, Plan, Map and Attitude c) Engine indications
9. An EADI display showing a moving runway moves down during the final stages of an approach. The aircraft must a) fly up # b) fly down c) hold descent path
This is exam number 2. 1. #
2. #
3.
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4. called
ARINC 629 databus is a) one cable, bi-directional b) two cables, bi directional c) two cables, uni-directional
Requirements for software control can be found in a) AWN 45 b) JAR OPS c) JAR AWO
Software can be modified by a) licensed avionics engineers b) the manufacturer c) The same rules apply as to modifications to hardware
Two connected fibre optic cable ends are parallel but not quite touching. This is
#
5.
#
6. #
7. #
8. #
a) b) c)
lens connector end to end coupling end fire coupling
A disadvantage of a fibre optic cable is a) shallow bend radius allowed b) couplings susceptible to ingress of fluid c) end terminals are susceptible to environmental contamination
The inside of a CRT consists of a) an oxide coating and rare mercury gas b) a phosphor coating and rare mercury gas c) iodine and rare mercury gas
What kind of light is used in a fibre optic systems? a) Infrared b) Visible c) Ultraviolet
Typical displays on an EHSI are a) VOR, Map, Plan and weather radar b) VOR, Plan, Map and Attitude c) Engine indications
9. An EADI display showing a moving runway moves down during the final stages of an approach. The aircraft must a) fly up # b) fly down c) hold descent path
10. #
1. #
2.
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3. #
4. #
6.
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7. #
8. A 0 1 0 1
An ARINC 573 data bus is used a) to input into a Digital Flight Data Recorder b) to input into a FDR Digital Acquisition Unit c) to supply digital inputs from a Symbol Generator to the EADI and EHSI
A flight data recorder can obtain information from aircraft instruments a) provided there is adequate isolation b) By direct connection to the instruments c) Provided there is adequate damping Adding invertors to the two inputs of an AND gate makes a a) NAND gate b) OR gate c) NOR gate
An ARINC 429 bus uses a) a twisted shielded pair of wires b) two bi-directional twin sheathed and earthed wires c) a single twin wire cable for each transmitter CRT horizontal beam control is achieved by a a) square wave b) sawtooth wave c) sinusoidal wave
The binary number 11010111 expressed as a decimal is a) 207 b) 223 c) 215
The octal number 1001 expressed as a decimal is a) 65 b) 513 c) 9
This truth table is for a B 0 0 1 1 #
9. #
C 0 0 0 1 a) b) c)
NAND gate AND gate OR gate
The inputs and outputs of a CADC are a) pitot and static in; altitude, attitude, CAS and VS out b) pitot and static in; altitude, CAS, mach and VS out
c)
pitot in; static, altitude, mach, CAS and VS out
1. During an instrument approach, the glideslope pointer deflects below the glideslope centre mark. This means the aircraft is positioned # a) above the glideslope b) below the glideslope c) to the left of the localiser 2. #
3. #
4. #
5.
Engine parameters are displayed on a) ECAM b) EHSI c) FMSCDU
A central maintenance computer provides a) ground and flight monitoring and testing on an on-board computer b) ground and BITE testing using a portable control panel c) display of system warnings and cautions
ARINC a) b) c)
573 is related to what system? INS FDR Weather Radar
#
The rising runway is positioned from information derived from a) barometric height b) vertical speed c) radio altimeter
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Where are the Digital Flight Data Recorder outputs supplied to? a) The recording unit b) Flight instruments c) There are no outputs
6.
7. #
8. #
9. #
FMS failure and warnings are a) displayed on EICAS b) engine warnings only c) EFIS warnings only
Who is responsible for the operational program of the FMS? a) The pilot b) The engineer c) The manufacturer
Flight director command bars are moved to the correct position by a) position feedback b) amplifier gain c) calibration
10.
#
If a signal has quantity in volts and physical position it is a) digital b) synchronous c) analogue
1. In a CRT, if the magnetic field is parallel to the Y plates, what will be the direction of the electron beam movement? # a) Vertical b) No movement c) Horizontal 2.
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3. #
What is the fixed feature of an ADI? a) The glideslope pointer b) The lateral deviation bar c) The aircraft symbol
Primary colours of a CRT are a) red, green and blue b) red, green and yellow c) red, blue and yellow
4. What information is required before completion of the alignment of an Inertial Navigation System? # a) Aircraft present position b) Aircraft present position and heading c) Heading and attitude 5.
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IRS accelerometers are mounted a) 60o to each other b) 45o to each other c) 90o to each other
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An FMS navigation database is updated a) at the operators request b) once a month c) every 28 days
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A single failure of a fly-by-wire system a) has no effect on aircraft operation b) will limit the flight profile c) will reduce operational heights and speeds Fly-by-wire load alleviation function in turbulent conditions will result in a) ailerons moving symmetrically upwards b) ailerons and spoilers moving symmetrically upwards c) spoilers moving symmetrically upwards
Fly-by-wire roll control is achieved by a) ailerons b) spoilers c) spoilers and ailerons
10.
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The movement of fly-by-wire control surfaces are a) hydraulically controlled and electrically actuated b) both electrically controlled and electrically actuated c) electrically controlled and hydraulically actuated
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ARINC 629 current mode couplers are a) capacitive b) resistive c) inductive
1.
2. #
3. #
4.
What instrument includes a display of a rising runway? a) EADI b) EHSI c) ECAM What are the effects of the X and Y plates on a CRT? a) X plates move the beam vertically, Y plates move the beam
horizontal # horizontal
5.
#
6.
On an EADI, the Flight Director command bars show a) the actual path with respect to the required path b) the required path with respect to the actual path c) the path with respect to the horizon
b)
Y plates move the beam vertically, X plates move the beam
c)
X and Y plates can move the beam in either direction
ARINC a) b) c)
629 data bus is two buses, unidirectional two buses, bi-directional data flow one bus, bi-directional data flow
An FMS system, besides controlling navigation, thrust and auto-nav, also provides a) take-off and landing warnings # b) dedicated status warnings c) GPWS warnings
7. 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 a) 1 megohm # b) 1 ohm c) 0.05 ohm
8. Ribbon cables effected by mutual impedance and current loop leakage should be protected by a) shielding each individual conductor b) connecting all conductors to a common earth # c) earthing each alternative conductor to separate point
9. #
10. #
1. #
EADI sky and ground display is provided by a) synthetic TV signals b) raster scan c) stroke pulse Normal a) b) c)
transmission order of ARINC 629 LRUs in periodic mode is in order of power up shortest to largest TG shortest to largest TI
What frequency creates the raster effect on a CRT? a) 50/60 Hz b) 400 Hz c) 250Hz
2. If an EFIS has 3 symbol generators, what is the purpose of the 3rd symbol generator? a) Comparison with No.1 symbol generator # b) Standby c) Parity function 3. #
4. #
5. #
6.
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7. #
The sweep waveform used on a electromagnetic CRT is a) trapezoidal b) sinusoidal c) sawtooth
FMS operational program is updated every a) 7 days b) 28 days c) 90 days
Fibre optic data is sent by a) modulating the frequency of a laser beam b) modulating the frequency of a filament beam c) a strobe light
What is 345 in binary? a) 100111001 b) 110011001 c) 101011001
Which a) b) c)
logic gate can be represented as a parallel circuit? OR gate Exclusive OR gate NAND gate
8. #
9.
# 10. #
1. #
2.
Software documentation procedures are laid down in a) AWN 45 b) JAA Ops c) MOE HIRF is prevented from entering a fibre optic cable by a) enclosing it in a metal braid b) grounding the fibre at both ends c) using an opto-isolator coupling In an ARINC 429 wordstring, bits 1 to 8 represent the a) source of message b) monitored parameter c) destination LRU address
ARINC a) b) c)
629 terminal transmit interval is unique to each terminal common to each terminal when all terminals are quiet
#
Continuity of a fibre optic cable is checked by a) a light source and an opto-power meter b) a calibrated light source c) a calibrated light source and an optometer
#
To shield a fibre optic from EMI you must a) earth both transducer and couplings b) shield it with a braided shield c) use an opto-isolator
3.
4. #
5. #
6. #
7.
A simbol generator displays ESDs warning. During replacement a) you must wear a wrist strap connected to an approved earth point b) make sure the pins are not touched and covers fitted c) you must earth the unit to the airframe structure Magnetic deflection on a CRT is achieved by a a) sawtooth waveform b) trapezoidal waveform c) sinusoidal waveform An FDR fitted to a helicopter begins recording a) on take-off b) on engine start-up c) when power is applied to the aircraft
#
MIL-ST-1533 is a data bus for a) Flight Data Recorders b) Inertial Reference System c) Digital Information Transfer System
#
Making an invertor from a NAND or NOR gate is achieved by a) inverting the input b) connecting two in series c) connecting the inputs
8.
9.
Parallel to series conversion is achieved by a) a parallel to series converter # b) a shift register c) a multiplexer / demultiplexer
The correct answer is b Read up on parallel to series converion 10.
The FMS databases consist of a) one navigation and one performance database b) two performance and one navigation database c) one performance and two navigation databases The correct answer is c Normally we consider the FMS as having 2 databases (1 navigational and 1 performance). (Jeppesen Avionics Fundamentals Page 385). However, the Navigational database is split in two. 1 is for Jeppesen data, uploaded on the ground, the other is for pilot input data (additional waypoints etc.). See http://www.b737.org.uk/fmc.htm for more
This is exam number 9. Youve been here 1 times. 1. The FMS can update the IRS position outputs by using information from either a) VOR and DME only b) DME and GPS only c) GPS, DME, LOC and VOR The correct answer is c Read up on INS/IRS 2.
The accepted error from INS/IRS is a) 1 mile/hour + 3 miles b) 2 miles per hour + 3 miles c) 3 miles / hour + 3 miles
The correct answer is c Read up on INS/IRS 3.
Before a) b) c)
an IRS can complete the alignment sequence the shutdown present position must be entered the current present position must be entered either the last or current position must be entered
The correct answer is b Read up on INS/IRS 4. from
Within a computer controlled flight system, position feedback is converted a) b) c)
analogue to digital digital to analogue position feedback to rate feedback
The correct answer is a Read up on computer controlled flight 5. What shape does the waveform take to counter the impedance effect of the coils in an electromagnetic controlled CRT?
a) Trapezoid b) Sawtooth c) Rectangular The correct answer is a Read up on CRTs - do not get confused with an electrostatic CRT
6.
What warnings can an FMS provide? a) Discrete warnings b) Spurious faults c) Ground faults only
The correct answer is a This means it can warn of inoperative equipment, but not when equipment is providing incorrect data 7.
Centralised Aircraft Monitoring System a) performs in-flight and ground tests of aircraft systems by carrying out a BITE interrogation b) give red warnings and amber cautions to display system status c) performs in-flight BITE interrogation only The correct answer is b Read up on ECAM 8. The control of the speed or rate that the flight director command bars move can be controlled by a) position feedback b) rate or velocity feedback c) amplifier gain The correct answer is b Read up on ILS indication
9. operation
The Centralised Aircraft Monitoring System uses the maintenance mode of
a) b) c) The correct answer is
in the air only on the ground only either in the air or on the ground b Aircraft Electricity and Electronics, Eismin, 5th Edition Page 359
10.
The third EFIS Symbol Generator is operated a) with EICAS b) in an emergency c) as a standby to the No1 and No2 system The correct answer is c Read up on EFIS
This is exam number 10. Youve been here 1 times. 1. What functions are available on the EHSI? a) Full arc and Wx only b) Full arc, Wx and Map Mode c) Full Arc only The correct answer is b Read up on EFIS
2. EFIS displays of the right hand and left hand displays are compared by comparators in the a) FMS b) EICAS c) Symbol Generators The correct answer is c Read up on EFIS 3.
What is the approximate earth rate? a) 5o/hour b) 10o/hour c) 15o/hour
The correct answer is c Aircraft Instruments and Integrated Systems. Pallett Page 102 4.
An IRS a) b) c)
platform has two accelerometers three accelerometers two or three accelerometers depending on the system
The correct answer is b Jeppesen Avionics Fundamentals Page 137 5.
IRS Laser Ring Gyros provide a) rate movement about an axis b) displacement about an axis c) both rate and displacement about an axis
The correct answer is a Jeppesen Avionics Fundamentals Page 137 6.
What are the outputs of a Digital ADC a) TAS, MACH, Altitude, TAT and SAT b) TAS, MACH and Altitude c) TAS, MACH, Altitude and TAT The correct answer is a Both Static and Total Air Temperatures are outputs of a digital ADC
7.
ARINC a) b) c)
629 periodic mode is used for normal operation transferring data only on events important to aircraft operation database loads
The correct answer is a Read up ARINC 429 and 629 8.
A fibre a) b) c)
optic data bus used on an aircraft connects non-essential systems only can transmit on several channels at the same time can send only one message at a time
The correct answer is b Read up on fibre optics 9.
Light travels along a fibre optic by a) reflection b) refraction c) dispersion
The correct answer is a Read up on fibre optics
10.
Manufacturers of aircraft can ensure HIRF protection by a) designing specific avionic areas that are shielded against HIRF b) ensuring all single wires are shielded with metal conduit c) advising operators of all points susceptible to deterioration due to corrosion, moisture ingress, flexing etc. The correct answer is a Understanding HIRF By Gerald L. Fuller
This is exam number 11. 1. How is data coupled to an ARINC data bus? a) By a capacitive pickup b) By an inductive pickup c) By a resistive pickup The correct answer is b Read up on ARINC 429 and 629 data bus systems 2.
An AND gate output is 1 when inputs are a) both 0 b) 1 and 0 c) both 1
The correct answer is c Read up on logic gates 3.
What is hex 110 in decimal a) 272 b) 282 c) 32
The correct answer is a Read up on hexadecimal numbering system 4.
Convert the binary word 1100 to decimal a) 16 b) 12 c) 11
The correct answer is b Read up on binary to decimal converion 5.
How does MIL-STD-1533 put data onto the data bus? a) Through the bus controller b) R1 (remote terminal) c) SSIFU (sub-system interface unit)
The correct answer is a Read up on MIL-STD-1533 data bus systems 6.
If a data message is made up of 1 and 0 it is a) analogue b) digital c) logic
The correct answer is b Digital is 1s and 0s 7.
Convert the binary word 1110 to decimal a) 12
b) c)
14 15
The correct answer is b Read up on binary to decimal converion 8.
What sort of gate requires two positive voltages to operate a) NOT b) OR c) AND
The correct answer is c Read up on logic gates 9.
What is the main disadvantage of a fibre optic data bus? a) Bend radius and moisture ingress at connections b) Less strong and durable when compared to twisted pair and coaxial
cable c)
Expensive to install
The correct answer is a Read up on fibre optics 10. When 4 binary serial counters are connected in cascade for frequency division, what division factor is required a) 4 b) 8 c) 16 The correct answer is c Each serial counter changes its state once every 2 clock pulses. So 4 serial counters devides by 2x2x2x2 = 16
This is exam number 12. Youve been here 1 times. 1. Magnetic deflection in a CRT is achieved by a) a sawtooth waveform b) a trapezoidal waveform c) a sinusoidal voltage The correct answer is b Do not get confused with electrostatic deflection (plates), which would be sawtooth
2.
Fly By Wire systems in the fully active mode, the actuators will a) both be active b) one in active mode, one in damping mode c) both be in damping mode, awaiting control inputs
The correct answer is b Read up on Fly by Wire 3.
The parity bit in digital information is used a) for BITE programs b) to check the validity of data information c) to check the status of the system
The correct answer is b Read up on the purpose and use of parity bit 4.
On a Fly By Wire system, what controls the stab trim a) ELAC
b) c)
ELAC and SEC SEC
The correct answer is b ELAC = Elevator Aileron Computer, SEC = Spoilers Elevator Computer and FAC = Flight Augmentation Computers (rudder) 5.
A disadvantage of a fibre optic cable is a) shallow bend radius b) couplings susceptible to ingress of fluid c) liable to environmental contamination of end terminals
The correct answer is c Read up on fibre optics 6.
ARINC 429 SDI word format is at bits a) 1-8 b) 9 - 10 c) 32 The correct answer is b SDI = Source Destination Ident
7.
Convert the binary number 110010 to decimal a) 80 b) 50 c) 34
The correct answer is b Read up on decimal conversions 8.
What is serial to parallel and vice-versa called a) Encoder/Decoder b) Multiplex/Demultiplex c) Switching
The correct answer is b Read up on multiplexing 9.
What is the parity bit for on an ARINC 429 bus a) To check for corruption during transmission of a word b) To act as a terminal gap in an emergency c) To delay the signal
The correct answer is a Read up on purpose and use of parity bit 10.
3 binary counters in cascade. What is the division? a) 8 b) 16 c) 32 The correct answer is a Each serial counter changes its state once every 2 clock pulses. So 3 serial counters devides by 2x2x2 = 8
This is exam number 13. Youve been here 1 times. 1. Control of software is by a) the National Aviation Authority b) engineers c) the aircraft manufacturers
The correct answer is a See AWN 45. 2.
A typical fibre optic connector is a) F-type connector b) coupling type, with lens fitted c) push-pull connector
The correct answer is b Read up on fibre optics. 3.
An ARINC 429 word label format is a) binary b) octal c) hexadecimal
The correct answer is b Read up on ARINC 429 word format. 4.
Which a) b) c)
of the following is an optelectronic device? Triac Thyristor Laser Diode
The correct answer is c Read up on optoelectronic devices (from Module 4). 5.
What is the advantage of a single mode fibre optic over ordinary wire? a) Large bandwidth b) Small bend radius c) Not prone to damage
The correct answer is a Read up on fibre optics. 6.
How many LRUs can be connected to an ARINC 429 data bus a) 120 b) 20 c) 60
The correct answer is b Read up on ARINC 429 and 629. 7.
Convert the hexidecimal number D into decimal a) 13 b) 14 c) 14
The correct answer is a Read up on hexidecimal numbering system. 8.
Convert decimal 15 into binary a) 1101 b) 1111 c) 1110
The correct answer is b Read up on decimal to binary conversion. 9.
Convert 448 to hex a) 3616 b) 2416 c) 2216
The correct answer is b read up on octal to hex conversion . 10.
When will a NAND gate give logic 0 at the output? a) When both inputs are at 0 b) When both inputs are at 1 c) When the inputs are different The correct answer is b Read up on logic gates.
This is exam number 14. Youve been here 1 times. 1. How many LRUs can be connected to an ARINC 629 data bus a) 120 b) 20 c) 60 The correct answer is a Read up on ARINC 429 and 629 data bus systems 2.
Convert decimal 15 into hexadecimal a) E b) G c) F
The correct answer is c Read up on hexadecimal numbering system 3. A 0 0 1 1
B 0 1 0 1
Which C 0 1 1 0 a) b) c)
logic gate has this truth table
NOT Exclusive OR NAND
The correct answer is b Read up on logic gates 4.
Which a) b) c)
logic gate can be represented as a parallel circuit? OR Exclusive OR NAND
The correct answer is a Read up on logic gates 5.
What is the definition of level one software? a) Critical b) Essential c) Non-essential
The correct answer is a Read up on software classification 6.
ESDS bags are sealed by a) zip locks b) ESDS labels
c)
twine (100% cotton)
The correct answer is c Boeing manual says 100% cotton twine. Other manuals say ESDS label. However, it could be considered that ESDS labels do not seal. 7.
What is 345 in binary? a) 101011001 b) 110011001 c) 100111001 The correct answer is a Read up on decimal to binary conversion
8.
What are the values of an ESDS wrist strap? a) 250 kilohms to 1.5 megohms b) 2 megohms to 5 megohms c) 2 gigohms to 4 gigohms
The correct answer is a CAAIPs Leaflet 9-4 5.3.1 - closest answer 9.
Convert 1D to binary a) 29 b) 11101 c) 101001
The correct answer is b Read up on hex to binary conversion 10.
ARINC 629 terminal transmit interval is a) unique to each terminal b) common to each terminal c) is when all transmissions are quiet The correct answer is b The TI is common to all LRUs on ARINC 629
This is exam number 15. Youve been here 1 times. 1. Convert 2C hex to octal a) 54 b) 44 c) 35 The correct answer is a Read up on hex to octal conversions 2.
A fibre a) b) c)
optic light source is normally a filament lamp a laser or LED a strobe light
The correct answer is b Read up on fibre optics 3.
What precautions are required when removing ESDS equipment a) Wear a wrist strap connected to an approved ground point b) Keep one hand on the airframe c) No special precautions are required
The correct answer is a Read up on anti-static precautions
4.
An ARINC 429 bus uses a) two bi-directional twin, sheathed and earthed wires b) a twisted shielded pair of wires c) a single twin cable for each transmitter
The correct answer is b Read up on ARINC 429 and 629 data bus systems 5.
The minimum requirement for a cockpit voice recorder to begin operating is a) on engine startup b) on commencing the takeoff roll c) once established in the en-route climb
The correct answer is b See ANO Art 53 para.1. Although JAR Ops states that the CVR must begin when the aircraft is capable of moving under its own power. 6.
ARINC a) b) c)
Communications Addressing and Reporting Systems is used to download aircraft status reports connect the aircraft to base make telephone calls
The correct answer is b Read up on ACARS 7.
ARINC a) b) c)
429 data bus systems uses decimal numbering hexadecimal numbering binary coded decimal
The correct answer is c Read up on ARINC 429 and 629 data bus systems (429 uses either BCD or binary) 8.
With radio coupled autopilot, what are the inputs a) ADF and ILS b) ADF and VOR c) ILS and VOR
The correct answer is c Read up on autopilot 9.
B-RNAV system must be capable of a) holding six waypoints b) displaying distance and bearing to waypoint c) reversing the waypoints for "fly-me-home"
The correct answer is b Read up on B-RNAV 10.
The basic principle of radar is based upon a) the amount of power in the signal returned b) the time delay between outward and returning pulse c) ultrasonic wave propagation The correct answer is b Read up on basic radar theory
This is exam number 16. Youve been here 1 times. 1. An ARINC 429 Binary Coded Decimal word occupies word bits a) 11 - 28 b) 11 - 29
c)
1-8
The correct answer is b Two versions of ARINC 429. BCD uses 11 - 29, Binary uses 11 - 28. 2.
Engine a) b) c)
parameters are displayed on ECAM EHSI CDU
The correct answer is a Read up on ECAM/EICAS systems 3. indicate?
A flight deck CRT LRU is being replaced. What does the ESDS label a) b) c)
Wrist straps should be worn Do not touch plug pins or leave them exposed Remove power before connecting
The correct answer is b See Palletts Micro Electronics In Aircraft Systsems or CAAIPs 9-4 para.7.1.3. 4.
What systems does the ADC feed? a) Altimeter / FMS / secondary radar b) Standby altimeter/machmeter c) Cabin pressure controller sensor / machmeter / Altimeter
The correct answer is c Read up on Air DAta Computers 5.
A hexadecimal is a number to base a) 8 b) 2 c) 16
The correct answer is c Read up on hexadecimal numering system 6.
An ARINC 429 system uses a a) 16 bit word over a twisted pair of wires b) 32 bit word over a twisted pair of wires c) 20 bit word over a bi-directional bus
The correct answer is b Read up on ARINC 429 and 629 data bus systems 7.
A thyristor is a device which has a) a positive temperature coefficient b) a negative temperature coefficient c) a temperature coefficient of zero
The correct answer is b Read up on thyristos 8. When using a wrist strap, before touching the LRU the resistance should be measured from your skin to the end of the earth probe. This should be a) more than 10 kilohms b) less than 10 kilohms c) less than 1 ohm The correct answer is a Read up on anti-static precautions
9.
1012 converted to decimal is a) 52 b) 510 c) 210
The correct answer is b Read up on binary to decimal converions 10. shaft are
Physical variables in quantitative forms, such as voltage or angular rotation of a
a) analogue b) digital c) binary The correct answer is a Read up on analogue/digital definitions This is exam number 17. Youve been here 1 times. 1. Within a 3 bit frequency cascade, division is to a) 8 b) 4 c) 2 The correct answer is a Read up on counters 2.
When a) b) c)
is a radio altimeter active? Up to 10,000 ft Up to 2,500 ft Up to 100 ft
The correct answer is b Read up on radio altimeters and ILS 3.
Which a) b) c)
of the following could be a primary cause of HIRF protection failure? Unserviceable radio filters Broken or missing static wicks Corrosion on bonding leads
The correct answer is a The exact definition of HIRF does not include electrostatc discharge (ESD). But only interference from outside sources. Understanding HIRF By Gerald L. Fuller 4.
The binary coded decimal number 10011000 expressed as a decimal number is a) 98 b10 b) 152 10 c) 152 2
The correct answer is a Read up on BCD to decimal conversions (BCD is not the same a s binary) 5.
The decimal number 7 expressed as a binary number is a) 111 2 b) 7 2 c) 101 2
The correct answer is a Read up on decimal to binary conversions 6.
Convert 011101 binary to octal a) 25 b) 33 c) 35
The correct answer is c Read up on binary to octal conversions 7.
Manufacturers of aircraft can ensure HIRF protection a) by designing specific avionic areas that are shielded against HIRF b) by ensuring all single wires are shielded with metal conduit c) by advising the operator of parts of the aircraft susceptible to degradation due to corrosion, moisture ingress, flexing etc. The correct answer is a Understanding HIRF By Gerald L. Fuller 8.
An ARINC 629 characteristic is a) all LRUs can transmit at the same time b) all LRUs can transmit and receive at the same time c) data can transmit in both directions down the data bus
The correct answer is c Read up on ARINC 429 and 629 data bus systems 9.
In an ARINC 429 word string, bits 1 - 8 represent a) the source of the message b) the monitored parameter c) the destination LRU
The correct answer is b Read up on ARINC 429 and 629 data bus systems 10.
What limits the number of ARINC 429 receivers on a bus a) The speed and size b) The parallel input impedance c) The weight
The correct answer is b Read up on ARINC 429 and 629 data bus systems This is exam number 18. Youve been here 1 times. 1. The fan-in in a gate is the a) number of outputs from a gate b) number of inputs to a gate c) number of inputs and outputs of a gate The correct answer is b Read up on logic gate systems 2. IC is
Very Large Scale Integrated (VLSI) means the number of gates in a single a) b) c)
up to 1000 up to 10,000 over 10,000
The correct answer is c Read up on logic gate systems 3.
The advantage of DRAM over SRAM is a) they operate slower b) has a larger storage capacity per chip area c) are cheaper to manufacture
The correct answer is c Read up on memory (RAM) types 4.
A BYTE is usually
a) b) c)
a 12 bit word an 8 bit word a six bit word
The correct answer is b Read up on computer terminology 5.
Data is transferred on the MIL-STD-1553B by a) bi-polar return to zero b) manchester bi-phase c) non return to zero
The correct answer is b Read up on MIL-STD-1553 data bus system 6.
The fibre optic cable can be identified on aircraft by its jacket colour which is a) purple b) red c) yellow
The correct answer is a Read up on fibre optics 7. For a fibre optic cable connector that is not regularly disconnected you would use the a) ceramic lens type b) ball lens type c) butt type The correct answer is c Read up on fibre optics 8.
The timebase in a CRT consists of a) an amplifier and an oscillator b) an oscillator only c) an amplifier only
The correct answer is a Read up on CRTs 9.
HIRF protection of LRUs is provided by a) built in filters and overvoltage circuits b) internally shielded cables c) built in filters only
The correct answer is a Understanding HIRF By Gerald L. Fuller 10.
An EADI display of flight director commands are coloured a) cyan b) red c) magenta The correct answer is c Aircraft instruments and integrated systems,(pallet) page 302 fig 12.5 eadi flight director command bars are magenta
This is exam number 19. Youve been here 1 times. 1. Which systems does a modern ADC give information to? a) Flight control computer, Air Data Instrument, Engine systems b) EFIS c) EICAS
The correct answer is a Read up on Air Data Computer 2.
Binary a) b) c)
Number: 110010 80 50 34
The correct answer is b Read up on binary to decimal conversion 3.
How are engine indications sent to the FDR? a) Via ARINC 573 b) Via ARINC 629 c) Source isolated
The correct answer is a Read up on Flight Data Recorder 4.
What is this truth table? A B A.B 000 100 010 111 a) AND gate b) NOR gate c) NOT gate
The correct answer is a Read up on logic gates 5.
Where do the outputs from a DADC go? a) EADI b) EHSI c) IRMP: Inertial Reference Mode Panel The correct answer is c Read up on Digital AIr Data Computer (IRMP is the control for the Inertial Referencing Unit)
6.
During a) b) c)
an EFIS screen fit use bonding strap dont touch terminals no tooling is required
The correct answer is b Microelectronics in Aircraft Systems - Pallet. pg 219 7.
To stop earth loops forming, you would a) leave both ends of the cable screen open circuit b) earth both ends of the cable screen c) earth only one end of the cable screen
The correct answer is c Read up on anti-static precautions 8.
How many satellite signals are required to achieve precise 3D positioning? a) 4 b) 5 c) 6
The correct answer is a Read up on satallite navigation (or GPS) 9.
Binary a) b) c)
addition of 1101 + 101101 is 58 61 70
The correct answer is a Read up on binary addition and binary to decimal conversions 10.
What system uses base 8? a) ARINC 429, in dataword labels only b) ARINC 629 c) ARINC 573
The correct answer is a Read up on ARINC 429 data bus word format
This is exam number 20. Youve been here 1 times. 1. What maintenance problems are associated fibre optics? a) Corrosion b) Earthing faults c) Kinking and contamination of connectors The correct answer is c Read up on fibre optics 2.
Who can sign for a software update? a) Design organization or the aircraft manufacturer b) Engineer c) Chief pilot
The correct answer is b AWN 43 3.
What sort of gate is this?
a) b) c)
Or gate NOR gate NOT gate
The correct answer is b Read up on logic gates 4.
What creates the raster effect on a CRT? a) Sawtooth frequency b) Sinusoidal frequency c) Trapezoidal
The correct answer is a Read up on Cathode Ray Tubes 5.
Common fibre optic use is
a) b) c)
modulating intensity on direct read modulating frequency on direct read HIRF
The correct answer is b Read up on fibre optics 6.
An aircraft may have been HIRF affected. a) A static wick check is required b) A bonding load check is required c) Test all radio frequencies for interference
The correct answer is a Read up on HIRF protection 7.
The binary number 11010111 is expressed as a decimal is: a) 215 b) 107 c) 53
The correct answer is a Read up on binary to decimal converion 8.
The octal number 1001 expressed as a decimal is: a) 513 b) 613 c) 713
The correct answer is a Read up on octal to decimal conversion 9. With a relative humidity of 10% to 20%, if you walked over a carpet what electrostatic voltage value would you expect to see? a) 6,000 volts b) 12,000 volts c) 35,000 volts The correct answer is c Read up on static electricity 10.
Before fitting a Printed Circuit Board you should check the a) resistance between skin and strap end plug is less than 10 megohms b) resistance between skin and strap end plug is more than 1 megohms c) resistance between strap and strap end plug is less than 1 megohms The correct answer is c CAAIP Leaflet 9-4 5.3.1
This is exam number 21. Youve been here 1 times. 1. A fibre optic data bus a) can only transmit 1 message at a time b) can transmit several messages simultaneously c) is only used for non essential messages The correct answer is b Read up on fibre optics 2.
The minimum requirement for an aeroplane CVR is a) from power on b) from engine start c) from beginning of take off roll
The correct answer is b JAR OPS Para 1.700 (c) OR answer c by CAP 393 Section I Para 53 3. data bus is
On an ARINC 629 data bus, the maximum amount of current-mode couplers per a) b) c)
46 120 64
The correct answer is b 120 LRUs maximum (but the B777 uses 46) 4.
To connect a LRU to the data bus a) a current mode coupler, serial interface module and terminal controller is
required b)
current mode coupler, terminal controller and a production break is
c)
a terminal controller and interface module only is required
required
The correct answer is a Read up on ARINC 429 and 629 data bus systems 5. Core is to
A current-mode coupler contains an E-Core assembly. The purpose of the Ea) b)
couple the signal to the data bus provide effective screening of the signal through the current-mode
c)
enable easy access for monitoring of the signal
coupler
The correct answer is a Read up on ARINC 429 and 629 data bus systems 6.
The ARINC 429 low rate of transmission is a) 12-14 Kbits/second with high of 100 kBits/second b) 12-14 Mbits/second with high of 100 Mbits/secon c) 100 kbits/second with high of 12-14 Mbits/second
The correct answer is a Read up on ARINC 429 and 629 data bus systems 7. A D to be achieved by a) b) c)
A converter is required to produce an output range of 0 to –10V. This can a non inverting op amp connected in series with output an inverting op amp connected in series with output a differentiator with a 100 Kilohm feedback resistor
The correct answer is b Read up on DACs and ADCs 8.
A D to A converter would use a precision amplifier to a) ensure that the output voltages remain accurate b) ensure that the input voltage remains accurate c) compensate for the variation of the feedback resistor with temperature The correct answer is a Read up on DACs and ADCs
9. A given transducer provides a voltage which corresponds to true heading. This voltage can be converted to bits by using a a) commutator b) digital to analogue converter c) analogue to digital converter
The correct answer is c Read up on DACs and ADCs 10.
The output of a NOT gate is logic 1. The input is a) logic 1 b) logic 0 c) both logic 1
The correct answer is b Read up on logic gates
This is exam number 22. Youve been here 1 times. 1. An ARINC 629 bus cable is a twisted pair of wires with a) a 130 ohm resistor at one end b) a 230 ohm resistor at one end c) a 130 ohm resistor at both ends The correct answer is c Read up on ARINC 429 and 629 data bus systems 2.
An ARINC 629 stub cable a) connects bi-directional data between the LRU and current mode coupler b) connects single directional data between the LRU and current mode
coupler c)
connects bi-directional data between two LRUs
The correct answer is a Read up on ARINC 429 and 629 data bus systems 3. Care must be taken when installing ARINC 629 cables into bus panels, damage to cables can cause a) arcing of high voltage signals b) standing waves. c) corrosion of the conductor The correct answer is c Read up on ARINC 429 and 629 data bus systems 4.
An aircraft data bus system a) cannot use both ARINC 629 and ARINC 429 data buses. b) can use both ARINC 629 and ARINC 429 as they are compatible. c) can use both systems, ARINC 629 and ARINC 429 via system card files and signal gateways The correct answer is c Read up on ARINC 429 and 629 data bus systems 5.
An Inertial Navigation System (INS/IRS) computes distance from acceleration by a) a simple integration b) a differentiation followed by an integration c) two successive integrations
The correct answer is c Read up on acceleration - velocity - distance computations 6.
Before a) b) c)
the aircraft is moved from the loading pier the pilot must insert the latitude and longitude of the pier into the IRS set the altitude to be fed into the INS insert the longitude and latitude of the first waypoint into the INS
The correct answer is a Read up on Inertial Reference Systems 7.
A 12 bit 16 Channel encoder will use a multiplexer with a) 2 wire series address line b) 3 bit parallel address line c) 4 bit parallel address line
The correct answer is a Read up on multiplexing 8.
An A to a) b) c)
D converter uses successive approximation to increase resolution increase speed increase accuracy
The correct answer is b Read up on ADCs and DACs 9.
An R-2R D to A converter uses a) two values of resistors whose precision is not important b) two values of precision resistors c) resistors whose values are logarithmic
The correct answer is b Read up on ADCs and DACs 10.
A fiber optic cable to LRU connector should be connected a) using torque-loaded pliers b) hand tight only c) very carefully to ensure alignment and reduce light loss The correct answer is c Read up on fibre optics
This is exam number 23. Youve been here 1 times. 1. An IRS has a) accelerometers fixed to the airframe and gyros on a stable platform b) accelerometers and gyros fixed to a the airframe c) accelerometers on a stable platform and gyros fixed to the airframe The correct answer is b Read up on IRS 2.
An IRS a) b) c)
system requires data for wind computation from central Air Data Computer satellites Doppler System
The correct answer is a Read up on IRS 3. to
The FMS carries out a Rho/Theta navigation function, the purpose of this is a)
update the IRS system with an accurate position fix of latitude and
b)
to update the EMS with the new lateral flight profile for the flight
c)
to update the VOR and DME systems with an accurate position fix
longitude plan
The correct answer is a Read up on FMS - IRS update function
4.
The FMS is updated a) by the aircrew by reference to the Tech Log b) automatically by update data from the ACARS c) by an aircraft engineer updates the system either by a magnetic tape or
floppy disc The correct answer is c Read up on FMS database updating 5.
Pitch Control of a fly by wire system is achieved by a) elevators only b) stabilizer and elevator c) stabilizer only
The correct answer is b Read up on fly-by-wire 6. controller:
In a fly by wire system, if the pilot control input is derived from a side stick a) b) c)
control surface feedback is fed to the side stick there is no control surface feedback to the side stick there will be only control surface feedback to the side stick after a
computer failure The correct answer is b Read up on fly-by-wire 7.
In memory using multivibrators, when power is switched off the datawill a) still be available on power up b) be lost c) automatically be downloaded
The correct answer is b Read up on RAM types 8. should be
The resistance of the wrist strap used as part of anti static precautions a) b) c)
0 - 200 ohm 250 kilohm - 1.5 megohm 20 megohm - 200 megohm
The correct answer is b CAAIPs Leaflet 9-4 5.3.1 9.
What is the function of a status register in a microprocessor? a) To indicate the status of the processor b) In the ALU, to store the position of the program during an interrupt c) To synchronize the clock pulse
The correct answer is a 10 Megohms • b) between your skin and the pin ground must be
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