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WorksheetsRadio, Radar, and Sonar Systems Quiz
Total questions: 88
Worksheet time: 44mins
What is the primary function of a transponder in the context of radio, radar, or sonar systems?
To amplify incoming signals
To automatically transmit a signal upon reception of a designated incoming signal
To decode encrypted signals
To store data from incoming signals
Which type of radar requires the use of an active sensor computer to identify an object?
Primary Surveillance Radar (PSR)
Secondary Surveillance Radar (SSR)
Passive radar
Active radar
What is a distinguishing feature of Primary Surveillance Radar (PSR)?
It requires a reply from the aircraft.
It operates by transmitting a narrow beam of RF.
It can get barometric altitude and identification information.
It uses encrypted signals for detection.
How does Secondary Surveillance Radar (SSR) differ from Primary Surveillance Radar (PSR) in terms of aircraft response?
SSR does not require a reply from the aircraft.
SSR and PSR both require replies from the aircraft.
SSR requires a reply from the aircraft.
Neither SSR nor PSR requires a reply from the aircraft.
What is the primary purpose of the Air Traffic Control Radar Beacon System (ATCRBS)?
To control air traffic manually
To provide weather updates
To combine PSR and SSR systems for a total range of information
To monitor ground traffic
What does the ATCRBS use to allow continuous communication between its system and aircraft?
Single frequency operation
Two different frequencies
Multiple antennas
Only PSR systems
Which component of the ATCRBS is responsible for determining the validity of incoming signals?
Transmitter
Modulator
Decoder
Receiver
What type of signal does the ATCRBS encoder generate?
DC pulse
RF pulse train
Reply signal
Control signal
What information does the airborne transponder provide to the radar operator when working with a ground radar system?
Weather conditions
Aircraft security information
Engine performance
Navigation routes
What is the purpose of Mode 1 in the Air Traffic Control Radar Beacon System (ATCRBS)?
Barometric altitude identification
Traffic identification
Security identification/Mission Number
Personal identification
Which mode is used for personal identification or identifying cargo and aircraft type?
Mode 1
Mode 2
Mode 3/A
Mode C
What type of codes are available for Mode 2 in the ATCRBS?
00 - 73
Alt. Encoded
0000 - 7777
None of the above
Which entities use Mode C in the ATCRBS?
Military only
Civilian only
Both Military and Civilian
None of the above
What input does Mode 3/A require in the ATCRBS?
Control Box
Receiver/Transmitter
CADC (G&C)
Altimeter Encoder
What is the frequency of the transmitter in the SIF System Characteristics?
1030 MHz
1090 MHz
1150 MHz
1200 MHz
Which modes are supported by the airborne interrogators?
All 4 modes 1,2,3/A, C
Modes 3/A, C only
Modes 1, 2 only
Mode C only
What type of antennas are used in the components section?
Fixed-directional
Omni-directional
Adjustable
Internal
What is the normal sensitivity of the receiver in dBm?
66 dBm
78 dBm
85 dBm
95 dBm
Which component is described as optional equipment?
Control Box
Mount
In-Flight Test Set
Receiver/Transmitter (Transponder)
What does the emergency code 7700 signify in Mode 3A?
Normal operation
Military operation
Emergency situation
System malfunction
What is the unique feature of Mode S interrogations?
They use a standard 16 bits identification
They contain a unique 24 bits aircraft address identification
They operate only in military zones
They require manual input from the pilot
How is altitude encoded in the altimeter encoder?
In 50-foot increments
In 100-foot increments
In 150-foot increments
In 200-foot increments
What is the reference value for the frame of reference in TCAS operations?
10.5 microseconds
15.8 microseconds
20.3 microseconds
25.7 microseconds
How is the UHF radio's MIC I/P function controlled?
Automatically
Manually with a lever
With a switch on the control box
Remotely via satellite
What is the purpose of the TACAN's TX suppression line?
To enhance signal strength
To prevent systems from transmitting at the same time and causing interference
To increase the duration of transmission
To secure communication with crypto IDs
Which mode in IFF allows for the identification and distinction between allied and oppositional forces?
Mode 2
Mode 4
Mode 5
Mode 1
What are the benefits of distributing keys by electronic method only in Mode 5?
More efficient, more secure, less labor intensive
Less efficient, less secure, more labor intensive
More efficient, less secure, more labor intensive
Less efficient, more secure, less labor intensive
What is the role of the NSA's Central Facility in the context of the Electronic Key Management System (EKMS)?
Monitoring and surveillance
Research and development
Production, management, and distribution of specialized keys and materials
Data encryption and decryption
What is the primary role of the Central Office of Record (COR) in the cryptographic key management system?
To generate and distribute software updates
To serve as the focal point for production, management, and distribution of cryptographic keys
To provide customer support for key management
To monitor and report on key usage
Which devices are included in Tier 3 of the cryptographic key management system?
Local Management Devices (LMDs) and Key Processors (KPs)
Data Transfer Device (DTD), Data Management Device-Power Station (DMD-PS), and Simple Key Loader (SKL)
Central Office of Record (COR)
None of the above
What type of key is the JOSEKI A Split?
A Mode 5 only key
A Tier 2 transfer security key
A key generated by the NSA Central facility and distributed via the EKMS
An unencrypted key
What does the color black signify in the context of key types?
The key is unencrypted
The key is encrypted
The key is inactive
The key is in transit
What is the maximum number of days that Type B keys can hold data?
31 days
93 days
24 hours
365 days
How long does a crypto period last in ECU Key Storage?
31 days
93 days
24 hours
365 days
Which device is an example of a non-tagged Mode 4 & 5 Equipment?
APX-123/UPX-41 Type A
KIV-77 Type B
KIV-78 Type B
None of the above
What happens when the Audio-Out-Light switch is set to OUT in the Interphone System?
The reply light turns on
An audio signal is generated
The system shuts off
Both A and B
How many inputs are required for the Hold function to operate?
One
Two
Three
Four
What is the purpose of the IFF Transponder Test Set as mentioned in the document?
To check the functionality of the SIE/IFF transponder and interrogator systems and E-TCAS system
To enhance the GPS signal reception
To control the aircraft power systems
To monitor the aircraft's landing gear status
How is the TS-4530 unit powered according to the document?
One rechargeable battery stick
Solar power
Fixed electrical outlets
Wind energy
Which of the following is NOT a mode of operation for the TS-4530 as listed in the document?
Mode 1
Mode 2
Mode X
Mode S
According to the document, how many push buttons does the TS-4530 unit have?
Three
Two
Four
One
What is the range of testing for a transponder as mentioned in the document?
10 to 150 feet
30 to 150 feet
10 to 100 feet
30 to 100 feet
Which button is used to advance the test sequence?
S1
S2
S3
None of the above
What happens to the device after 15 minutes of no activity?
It powers off
It enters standby mode
It resets the test sequence
It continues running
According to the document, mid-air collisions are avoidable if the crew is provided with what type of information?
Detailed and complex
Timely and accurate
General and basic
Historical and extensive
What is the primary purpose of Traffic Collision Avoidance Systems (TCAS)?
To increase air traffic
To reduce or eliminate mid-air collisions
To improve weather forecasting
To enhance aircraft speed
Which type of Collision Avoidance System relies on local radar and cannot operate in a non-radar environment?
Active
Passive
TCAS I
E-TCAS
What additional capabilities does TCAS II have over TCAS I?
Traffic situation and auditory warnings only
Resolution advisories and visual maneuvers
Plus range extension and Mode A tracking
Surveillance functions only
What is a unique feature of E-TCAS compared to other TCAS versions?
Auditory warnings only
Collision avoidance
Plus range extension, Mode A tracking, and identification tracking for formation flight
Passive surveillance
How many volume types should be considered in the surveillance function of TCAS?
One
Two
Three
Four
What is the maximum number of aircraft that the E-TCAS can track at one time?
30
35
40
45
How many aircraft with the highest threat potential are displayed by the E-TCAS?
25
30
35
40
Which of the following is NOT a function performed by the E-TCAS?
Collision avoidance computation
Azimuth maneuvers generation
Threat potential evaluation
Traffic advisory display
On which devices can the Resolution Advisory Display Function be displayed in an aircraft equipped with E-TCAS?
TCAS/VSI or MFD
GPS or MFD
Radar or MFD
Autopilot or MFD
What does the E-TCAS base its collision avoidance computation on?
Intruder's speed and direction
Intruder's range divided by range rate
Intruder's altitude and speed
Intruder's threat level and proximity
What is the purpose of synthesized audio announcements in TCAS systems?
To provide music during flights
To issue alerts such as Clear, Traffic, Preventative RA, and Corrective RA
To communicate with air traffic control
To broadcast weather updates
What type of data does the E-TCAS system use to determine the range to an intruder?
The time it takes for sound waves to travel
The time it takes for light signals to reflect
The time it takes RF signals to go from TCAS to the intruder’s transponders and back
The speed of the intruder's aircraft
How is the bearing to an intruder determined by the TCAS system?
By the altitude difference between the aircraft
By the speed of the intruder's aircraft
By where the signal is received on the two TCAS directional antennas
By GPS positioning
What determines the intruder altitude in the E-TCAS system?
The GPS altitude of the intruder
The barometric altitude reported by the intruder’s transponder’s mode-C or mode-S reply
The visual confirmation from the pilot
The estimated time of arrival of the intruder
What does a white open diamond symbol indicate in TCAS indicators?
A nearby intruder that is within 48 seconds of closest point of approach
A target beyond proximity advisory range
A resolution advisory threat within 35 seconds of CPA
A proximity alert for an intruder within 1200ft of own altitude
What is represented by a yellow filled circle in TCAS symbols?
Non-threat target
Proximity alert
Traffic Advisory
Resolution Advisory
Which TCAS symbol indicates a resolution advisory?
White open diamond
Yellow filled circle
Red filled square
White filled diamond
What is the purpose of the initial aural alert in Traffic Advisories?
To indicate a proximity alert
To provide a 48 seconds closest point of approach warning
To provide 10-15 seconds preparatory time
To alert the pilot about a potential threat
What is the primary function of the E-TCAS Processor in aircraft systems?
Controls engine power
Manages fuel efficiency
Controls all surveillance, data acquisition, tracking, advisory, air-to-air maneuvering coordination functions
Monitors cabin pressure
Resolution Advisories (RA) in TCAS are only issued for aircraft that report what mode?
Mode A
Mode S
Mode C
Mode D
How many directional antennas are typically installed on an aircraft for TCAS?
1
2
3
4
What is required for the E-TCAS processor to function properly?
At least one operational radio/radar altimeter and valid heading and attitude
Only a functional GPS
Only a functional autopilot system
At least two operational radio/radar altimeters
Into how many quadrants does the directional antenna divide the 360-degree azimuth?
2
4
6
8
What is the purpose of the set of 4 individual cables in the TCAS system?
To connect the TCAS system to the power supply
To connect antennas to the TCAS processor
To provide power to the cockpit lights
To signal the emergency systems
What happens if the cables connected to the TCAS processor are damaged?
The cables are repaired
The cables are ignored until regular maintenance
The cables are replaced
The system is manually operated
How is vertical speed displayed in the TCAS/VSI system?
Through a series of LED lights
On a horizontal bar graph
On a standard circular dial with a pointer
Via digital numeric output
What feature does the center of the TCAS/VSI display provide?
It shows the fuel level
It provides horizontal situation presentation of traffic
It displays weather information
It indicates the altitude level
What is the function of the built-in Test circuits in the TCAS/VSI system?
To control the cockpit temperature
To monitor the TCAS/VSI for failures
To navigate the aircraft
To communicate with the ground crew
Which statement best describes the control hierarchy in the MFD/E-TCAS system?
Copilot's control overrides the pilot's control
Both pilot and copilot have equal control
Pilot's control overrides the copilot's control
Ground control overrides both pilot and copilot
What is the normal range of the TCAS operation in nautical miles (NM)?
30 NM
40 NM
50 NM
60 NM
How many Resolution Advisories (RAs) can the TCAS issue simultaneously?
1
2
3
4
What does the Tau represent in TCAS operation?
Time until minimum separation
Time to react to a threat
Minimum time to discern a collision threat and take evasive action
Time to complete an evasive maneuver
What is the unique feature of Mode S in TCAS?
It uses a 16-bit address ID
It uses a 24-bit unique address ID
It identifies only the aircraft's speed
It communicates only with the control tower
Which code corresponds to the 'Open White Diamond' in Active Threat Solutions?
+03
+07
+12
+17
What type of Resolution Advisory requires no change to the present flight path for safe separation?
Corrective
Preventative
Monitor Vertical Speed
Climb or Descend
What action does a Corrective Resolution Advisory require when a change in present flight path is necessary for safe separation?
Monitor Vertical Speed
No action required
Climb or Descend
Increase Climb
What frequency does the Mode S Transponder transmit when it receives a 1030MHz interrogation from TCAS equipped aircraft?
1090 MHz
1030 MHz
1200 MHz
1000 MHz
What unique identifier do Mode S interrogations contain?
16-bit aircraft address ID
24-bit aircraft address ID
32-bit aircraft address ID
48-bit aircraft address ID
What does the Radio Altimeter provide to the E-TCAS system?
Aircraft pressure altitude data
Aircraft above ground altitude data
E-TCAS heading data
E-TCAS pitch and roll data
Which system is used to provide aircraft pressure altitude data to E-TCAS?
Radio Altimeter
INU
Interphone System
None of the above
What type of advisories does the Interphone System broadcast for E-TCAS?
Visual advisories
Aural advisories
Manual advisories
Automatic advisories
What must the MFD be set in to display TCAS data?
HSI format
VSI format
PFD format
CDU format
What is the primary control for E-TCAS and Mode S transponder?
MFD
CDU
INU
Radio Altimeter
