Communication and Navegation Systems for Airplanes

SC IDEA
Quiz by SC IDEA, updated more than 1 year ago
SC IDEA
Created by SC IDEA over 5 years ago
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Quiz on Communication and Navegation Systems for Airplanes, created by SC IDEA on 03/10/2015.
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Resource summary

Question 1

Question
1.1 In the first solo across the Atlantic in 1927, how did Charles Lindbergh keep control of the airplane while flying in clouds and darkness?
Answer

Question 2

Question
Name three instruments used by the Wright Brothers in their first flight that marked the begin­ning of what would become "avionics".
Answer
  • Stopwatch
  • turn-and bank
  • Prop counter
  • Wind speed
  • earth inductor compass

Question 3

Question
1.3 What generated power for Lindbergh's earth induct compass?
Answer
  • a battery
  • an anemometer
  • an alternator
  • an engine

Question 4

Question
1.4 Which of the following sys­tems airlines not consider part of "avionics"?
Answer
  • Turbocharching
  • fire de­tection
  • landing gear
  • air conditioning
  • water-waste
  • air
  • starting

Question 5

Question
1.5 What technology was widely adopted in avionics to reduce size and weight, as well as provide greatly increased function.
Answer
  • semiconductor
  • radio waves
  • transponder
  • vacuum tubes

Question 6

Question
1.6 What system, made possible by digital elec­tronics, greatly reduces the problem of mid-air collisions?
Answer
  • RVSM
  • AP
  • EGPWS
  • TCAS

Question 7

Question
1.7 What replaces early "steam gauges" in air­craft instrument panels?
Answer
  • Flat LCD panels
  • CRT panels
  • some other crazy answer

Question 8

Question
1.8 How can the function of an electronic instru­ment be easily enhanced?
Answer
  • by upgrading its software
  • by purchasing a new instrument
  • by changing its sensors
  • by apply contact cleaner

Question 9

Question
1.9 What does "CNS," which describes basic functions of avionics, stand for?
Answer
  • Center of Nautical Instrument
  • Communications-Navegations-Survillance

Question 10

Question
1.10 "FADEC" is.
Answer
  • An automatic electronic system that controls engine efficiency by using the less fuel as possible
  • An automatic electronic system that controls airplane primary control surfaces in order to take workload from the pilot

Question 11

Question
1.11 Name the world body that deliberates fu­ture aviation technology? 
Answer
  • ANAC
  • INAC
  • FAA
  • AMC

Question 12

Question
2.1 Radio frequencies are measured in Hertz (Hz), after Heinrich Hertz, What was his contribution to communications?
Answer
  • enable peoble to communicate using air as a transport medium
  • "nothing I guess"

Question 13

Question
What was the first system for marking cross-country airways?
Answer
  • NDB
  • ADF
  • lighted beacons
  • radio airways

Question 14

Question
What was the first instrument to enable pi­lots to maintain control of an airplane without see­ing outside the cockpit?  
Answer
  • turn and bank indicator
  • turn and bank coordinator
  • TCAS
  • Artifitial Horizont

Question 15

Question
What component led to the artificial horizon and autopilot?
Answer
  • Vacuum pump
  • auto pilot computer
  • gyro

Question 16

Question
? Name the developer of the autopilots early systems.
Answer
  • Thorne-Baker
  • Jimmy Doolittle
  • Alexander Graham Bell
  • Elmer Sperry

Question 17

Question
What type of transmitter sent the first radio message from an airplane to the ground?
Answer
  • high frecuency transmitter
  • Marconi transmitter
  • piezo electric transmitter
  • Delco transmitter

Question 18

Question
Who was the pioneer who flew the flrst in­ strument flight, sometimes known as "blind flying," in 1929?
Answer
  • Jimmy Doolittle
  • Samuel Morse
  • Elmer Sperry

Question 19

Question
What system in Air Traffic Control replaced position reports by voice?  
Answer
  • reports by Morse code
  • reports by ACARS
  • Reports by datalink

Question 20

Question
3.2 What is the frequency coverage of the VHF com band?
Answer
  • 3 to 30 Mhz
  • 30 to 300 Mhz
  • 300 to 3000 Mhz

Question 21

Question
What is the narrowest spacing for channels in the VHF com band?
Answer
  • 3.88 Khz
  • 8.33 Khz
  • 8.33 Mhz
  • 25 Khz

Question 22

Question
3.6 What is the purpose of a mic key line?
Answer
  • provide the signal that de-activate the microphone
  • provide the signal that activate the microphone
  • call Mic Key
  • Permits the use of the comminication receiver

Question 23

Question
3.7 A typical com radio has two frequencys
Answer
  • True
  • False

Question 24

Question
3.8 What is the purpose of a squelch?
Answer
  • Allows the user to hear throught the radio interference Caused by the atmosphere
  • is provides the mean so the user can perform a quick test on the com receiver
  • it provides interfece between ATC and pilot
  • is a filter of atmospheric noise that incorporate the receiver in order to provide a clean sound

Question 25

Question
3.9 What function does the "com test" control pro­vide?
Answer
  • disable the squelch
  • activate the squelch
  • is the squelch back up fuction

Question 26

Question
3.10 Where is the LRU (line replaceable unit) for a com transceiver of a large aircraft located?
Answer
  • wheel well compartment
  • electronic bay
  • cockpit
  • landing gear

Question 27

Question
3.11 What is a radio management system?
Answer
  • I dont know, it does not really exist
  • is a unit the provide all of the differents com LRU control buttons and advisories in a single unit
  • It is a universal com control panel located on the cockpit

Question 28

Question
3.12 What is the third VHF com radio of an air­Iiner often used for?
Answer
  • back up of the com 1 and com 2
  • sat com interface
  • ACARS
  • SELCAL

Question 29

Question
4.1 Are High Frequency communications not as reliable as those of VHF because the ionosphere is always changing between day and night and season to season
Answer
  • True
  • False

Question 30

Question
4.2 What is the advantage of "Autotune.“
Answer
  • reduced pilot workload
  • permits the use of the auto tune trailing edge antenna at the aft of the airplane

Question 31

Question
it concentrates all of the transmitter power in only on of three components
Answer
  • LSB modulation
  • USB modulation
  • AM modulation
  • carrier wave

Question 32

Question
4.4 What made HF datalink successful?
Answer
  • the extremely huge antennainternetworked
  • HFDL system relationship to HF voice
  • Automatic selection of data rates:
  • Digital signal processing
  • pre-assigned frequency to communicate with the responsible ATC
  • HF ground stations

Question 33

Question
4.7 What is the purpose of an HF antenna cou­pler?
Answer
  • tunes antenna
  • auto tune the antenna
  • it is just the component that couple the antenna to its mounting

Question 34

Question
4.6 check the correct aseverations on HF datalink
Answer
  • Data Relieves Congestion on Voice Frequencies
  • -Data Detects Errors and Automatically Retransmits
  • Shorter Message Transmission Time (Iess than 3 seconds vs more than 1 minute)
  • it is the preffered system of communications in short fligths

Question 35

Question
5.1 Select those that are true about satellite communications?
Answer
  • it is Free from at­mospheric interference and limited bandwidth
  • it is not Free from at­mospheric interference and limited bandwidth
  • Satcom signals penetrate the ionosphere without bending or reflecting
  • Satcom signals can not penetrate the ionosphere without bending or reflecting
  • are unaffected by electrical noise or weather
  • are affected by electrical noise or weather

Question 36

Question
5.2 What is the name of the next generation air traffic control system based on satellites?
Answer
  • SATCOM
  • FANS
  • ACARS
  • GPS

Question 37

Question
5.3 How many Inmarsat satellites provide global coverage, and where are they located?
Answer
  • They are 24 satellites of GPS constellation in six planes
  • four satellites that hover over the equator
  • they are four satellites that are not geostacionary instead each one can see all the following regions 871 Atlantic Ocean Region – East (AOR-E) 872 Pacific Ocean Region (POR) 873 Indian Ocean Region (IOR) 874 Atlantic Ocean Region – West (AOR-W

Question 38

Question
The two major components of the satcom system are Ground Earth Station and Aircraft Earth Station
Answer
  • True
  • False

Question 39

Question
satcom antenna that supports the full range of satcom services
Answer
  • low gain
  • intermedium gain
  • high gain

Question 40

Question
select satcom antennas that must be highly directional?
Answer
  • low gain
  • high gain
  • conformal
  • intermedium gain

Question 41

Question
5.9 After satellite messages are received at a GES, how do they get to their final destination?  
Answer
  • Trough telecommunications services throughout the world.
  • trough satellite dishes over the world.

Question 42

Question
5.10 On what band does the aircraft send and receive satellite communications?
Answer
  • HF
  • VHF
  • UHF

Question 43

Question
5.11 What is the purpose of a Beam Steering Unit?
Answer
  • keeps the elements pointed at the satellite as the airplane posi­tion changes
  • converts signals from an intermediate frequency up into the L-band
  • SDU inter­faces with the airplane navigation system

Question 44

Question
5.12 What is the typical location on the airplane for an electromechanically steered antenna?
Answer
  • under the airplane
  • at the top of vertical stabilizer
  • inside the vertical stabilizer
  • electronic bay

Question 45

Question
5.13 communications satellites appear to remain fixed in one position?
Answer
  • True
  • False

Question 46

Question
6.1 What is the meaning of the abbreviation "ACARS"?
Answer
  • Aircraft Communication Addressing and Repair System
  • Aircraft Communication Air and Reporting System
  • Aircraft Communication Addressing and Reporting System

Question 47

Question
6.2 What type of communications occur on ACARS?
Answer
  • datalink through LF
  • datalink through L band
  • datalink through VHF
  • datalink through HF
  • datalink through UHF

Question 48

Question
6.3 networks operates ground and satellite services for ACAR are ARINC and SITA
Answer
  • True
  • False

Question 49

Question
6.4 What is the meaning of the ACARS message "0001 OFF"
Answer
  • preflight and taxi
  • en route
  • approach and landing
  • none of the options

Question 50

Question
6.5 an ACARS message received only by the aircraft it’s intended for?
Answer
  • True
  • False

Question 51

Question
7.1 What does the contraction "Selcal” mean?
Answer
  • Sectional calling
  • Local calling
  • selective calling

Question 52

Question
7.2 Select the reasons why Selcal is used.
Answer
  • During oceanic flights, aircraft monitor a HF (high frequency) radio for clearances from a ground controller from long period of time
  • HF reception is often noisy
  • a pilot prefers to turn down the audio He will not miss calls intended for him
  • VHF com are not to trust

Question 53

Question
7.3 How many tones are in a Selcal code?
Answer
  • 1
  • 2
  • 3
  • 4

Question 54

Question
7.4 How many Selcal tone pairs are transmitted simultaneously? 
Answer
  • 1
  • 2
  • 4

Question 55

Question
7.5 Can two aircraft have the same Selcal code?
Answer
  • True
  • False

Question 56

Question
7.6 if a pilot receives a Selcal intended for a different airplane
Answer
  • the system is faulty
  • the pilot should double check with the controller

Question 57

Question
8.1 how many are sent out by an ELT during a distress call?
Answer
  • 1
  • 2
  • 3
  • 4
  • 9

Question 58

Question
8.2 an ELT must be mounted
Answer
  • perpendicular with the direction of flight
  • in line with the direction of flight
  • it does not matter

Question 59

Question
8.3 Name the satellites that pick up and relay ELT signals?
Answer
  • Cospas
  • Sarsat
  • Doppler
  • Leosar
  • Geosar

Question 60

Question
8.4 a geostacionary satellite
Answer
  • Doppler shift
  • receive a distress message that contains the airplane’s position provided by a GPS

Question 61

Question
8.5 a G-switch
Answer
  • is the Test switch on cockpit
  • is the Geostacionary switch
  • is the impact switch

Question 62

Question
The 406 system is a mixture of Leosar and Geosar satellites. Leosar ("low earth orbit search and rescue") completely covers the globe
Answer
  • True
  • False

Question 63

Question
9.1 Is there a combined VOR and Tacan navigational station?
Answer
  • True
  • False

Question 64

Question
9.2 What problem of early radionavigation did VOR overcome?
Answer
  • lights houses worked perfectly
  • expensive stations
  • bad weather nav

Question 65

Question
9.3 VOR waves travel
Answer
  • curved
  • straight

Question 66

Question
9.4 Name the two major components of a VOR signal
Answer
  • frecuency modulation
  • variable phase
  • subcarrier
  • amplitud modulation
  • reference signal

Question 67

Question
9.5 The reference phase broadcasts in what direction?
Answer
  • 360 direction
  • 1direction
  • ommidirectional, ergo VOR

Question 68

Question
9.6 The variable phase rotates 60 times per second
Answer
  • True
  • False

Question 69

Question
9.6 The variable phase rotates 10 Times per second
Answer
  • True
  • False

Question 70

Question
9.7 What happens when the variable phase moves through magnetic north (O degrees)?
Answer
  • a reference phase beams in 360 directions
  • a reference phase is on its lowest frecuency
  • a reference phase is on its highest frecuency

Question 71

Question
9.8 the VOR receiver know its bearing from the VOR station by counting time
Answer
  • True
  • False

Question 72

Question
9.9 Besides fixed and variable phase signals, are there other information broadcasted by a VOR station?
Answer
  • True
  • False

Question 73

Question
9.10 Why is it necessary to place the reference phase signal on an FM subcarrier?
Answer
  • because it is a to low frecuency
  • because it is in a to hi frecuency
  • because its a signal with little power

Question 74

Question
9.11 What is the purpose of the course deviation indicator (CDI) on a VOR receiver?
Answer
  • indicates the airplane heading
  • indicates the VOR graund station magnetic bearing selected on the instrument
  • indicates the VOR graund station runway

Question 75

Question
• 10.2 How is RVR (Runway Visual Range) measured on an ILS runway?
Answer
  • Is estimated by a weather observer and stated in miles
  • by a transmissometer
  • By measuring the loss of light (caused by haze or fog)

Question 76

Question
• 10.3 Name the categories of ILS.
Answer
  • Cat I-II-III
  • Cat I-IIa-IIb- IIIa-IIIb-IIIc
  • Cat I-II-IIIa-IIIb-IIIc

Question 77

Question
10.4 What component of an ILS provides an ILS provides an extended centerline to the runway?
Answer
  • VNAV
  • glideslope
  • azimuth
  • LNAV
  • localizer

Question 78

Question
10.5 IS VNAV the ILS component that provides vertical guidance to a runway?
Answer
  • True
  • False

Question 79

Question
10.6 How many channels are allocated to localizers?
Answer
  • 40
  • 80
  • 120

Question 80

Question
10.7 in general aviation The localizer frequency is selected on the
Answer
  • dedicated localizer receiver
  • dedicated ILS receiver
  • nav receiver
  • audio panel
  • glideslope receiver

Question 81

Question
10.8 The frequencies of the two audio tones that provide left-right guidance or localizer are
Answer
  • 90
  • 150
  • 400
  • 1300
  • 3000

Question 82

Question
10.9 When a localizer frequency is selected on the VOR receiver, the indicator needle indicates
Answer
  • the radial of the runway
  • the course selected on the OBS
  • fly left or right of the runway

Question 83

Question
10.9 When a localizer frequency is selected on the VOR receiver, the indicator needle deflected full right indicates 2.5 degrees off the center line... or more 
Answer
  • True
  • False

Question 84

Question
10.11 The compass locator of an ILS is received on the
Answer
  • Inner marker beacon
  • middle marker beacon
  • outer marker beacon

Question 85

Question
10.12 The localizar frecuency is tuned automatically when glideslope frequenci is selected on the receiver?
Answer
  • True
  • False

Question 86

Question
11.1 select What were reasons for approving the Microwave Landing System?
Answer
  • ILS has only 40 frequencies
  • An ILS serves one runway with a single course
  • the repeated "I hear music” he reported to the controller
  • Installing an ILS at an airport is not simple
  • the GPS technology was out of reach

Question 87

Question
11.2 MLS creates inbound courses to runways by a scanning beam which moves back and forth beyond either side of the runway, this is called the ___________________________signal.
Answer
  • glideslope
  • marker
  • localizer
  • azimuth

Question 88

Question
11.4 An MLS scanning beam determine the centerline of a runway by a principle called distance Reference Scanning Beam
Answer
  • True
  • False

Question 89

Question
11.4 An MLS scanning beam determine the centerline of a runway by a principle called time Reference Scanning Beam
Answer
  • True
  • False

Question 90

Question
11.5 Why are there so few MLS installations at airports?
Answer
  • it is to new
  • it is to expensive
  • Navstar systm was borned

Question 91

Question
11.6 What type of receiver can use ILS, MLS and GPS signals?
Answer
  • none
  • Multireceiver

Question 92

Question
On what bands does ADF operate?
Answer
  • LF
  • MF
  • HF
  • VHF
  • UHF

Question 93

Question
An ADF with a fixed compass card can only indicate _ bearing to an NDB (non-directional beacon) station.
Answer
  • Magnetic north
  • Magnetic bearing
  • Relative bearing
  • Magnetic heading

Question 94

Question
When the edge of an ADF loop points toward the station, strongest signal is received. This is known as a?
Answer
  • Peak
  • Null
  • Sense

Question 95

Question
When the flat side of the loop faces the station, the received signal is weakest. This is known as a?
Answer
  • Peak
  • Null
  • Sense

Question 96

Question
Which is used by the ADF receiver for determining direction, the peak or null?
Answer
  • Peak
  • Null

Question 97

Question
What is the purpose of a sense antenna?
Answer
  • Determinar dirección
  • Corregir el cuadrante
  • Determinar sentido
  • Determinar BFO

Question 98

Question
Is "quadrantal error, a condition in which the loop antenna is not in a extremely straight line with the NDB?
Answer
  • Falso
  • Verdadero

Question 99

Question
How is direction-finding selected'?
Answer
  • Activating the ADF function
  • Deactivating the ADF function
  • Activating the BFO function
  • Activating the ET/FLT function

Question 100

Question
What is the function of the switch marked "BFO" or "Tone"'?
Answer
  • It creates an audio from the NDB stations without audio identifier
  • It helps locate very weak NDB stations
  • Is makes possible the audio receptions if form of morse code by disabling the loop antenna

Question 101

Question
What type of interference may occur in a ADF receiver?
Answer
  • Night effect
  • Coastal effect
  • Attitude error
  • Electrical interference
  • Natural sources interference
  • Quadrantal error

Question 102

Question
An airborne DME sends out a pulse known as an?
Answer
  • Jitter
  • Interrogating pulses
  • Answer pulse
  • Slant range

Question 103

Question
DME is a component of a military system known as?
Answer
  • VORTAC
  • TACAN
  • MILITARY DME

Question 104

Question
In addition to distance-to-station, an airborne DME computes and?
Answer
  • GS
  • TTS

Question 105

Question
A distance error in DME is called Slant Range?
Answer
  • True
  • False

Question 106

Question
All aircraft interrogating the same DME ground station are on the same frequency. How does an aircraft identify its replies from all others?
Answer
  • Due to the GS reply jitter is identical of that of the interrogation
  • Due to that each aircraft sends and random spacing pair of pulse that is different from all others
  • Due to that the airplane first makes a link with the ground station

Question 107

Question
How is a DME station tuned in?
Answer
  • With the knob in the DME panel, you select the DME frequency.
  • With the knob in the DME panel, you select the VORTAC frequency.
  • With the knob in the DME panel, you select the VOR frequency.
  • the radio automatically channels the correct DME frequency.

Question 108

Question
What happens when more than about 100 aircraft interrogate the same DME ground station?
Answer
  • The station reduces its receiver sensitivity*
  • Each airplane looks for its unique jitter pattern and locks on to it.
  • The system overload

Question 109

Question
does the DME ground station delay its reply by 50 microsecond To take time to copy aircraft interrogating panel?
Answer
  • True
  • False

Question 110

Question
Does the DME station transmit an ID?
Answer
  • True
  • False

Question 111

Question
A TCAS aircraft transmits an interrogation ?
Answer
  • Once per second
  • Twice per second
  • 4 times per second
  • 10 times per second

Question 112

Question
How does an intruder aircraft with an ATCRBS (early type) transponder reply to TCAS interrogations?
Answer
  • With an address
  • With an Threat Advisory
  • Resolution Advisory

Question 113

Question
How does an intruder aircraft with a Mode S transponder reply to TCAS interrogations?
Answer
  • With a 1090 MHz Datalink Resolution Advisory
  • With a 1090 MHz Datalink Threat Advisory
  • With a 1030 MHz Datalink Resolution Advisory
  • With a 1030 MHz Datalink Threat Advisory

Question 114

Question
How does TCAS determine the direction of a threat?
Answer
  • With the TCAS directional antenna
  • With the transponder directional antenna

Question 115

Question
does TCAS determine the distance of a threat the same way the SSR?
Answer
  • True
  • False

Question 116

Question
How does TCAS determine whether the other aircraft is a threat?
Answer
  • If it is within 2.1 NM
  • If it is within 3.3 NM
  • If it is within 20 NM

Question 117

Question
Name the two kinds of warnings issued by TCAS
Answer
  • CA
  • RA
  • TA
  • MA

Question 118

Question
What does an Resolution Authority (RA) do?
Answer
  • Makes the other aircraft in collision course to appear on the screen
  • Tells the othe aircraft to fly up or down and left or right
  • Tells the othe aircraft to fly up or down

Question 119

Question
If two TCA aircraft are closing, what prevents them from climbing, and flying into each other?
Answer
  • The pilot resolution
  • The TCAS resolution

Question 120

Question
Where is the technique of “whisper-shout” most useful?
Answer
  • In cruise flight
  • In landings only
  • Near airports areas

Question 121

Question
does the directional antenna reduce the number of replies for each interrogation?
Answer
  • True
  • False
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