NAV 5
NAV 5 Radar Quiz
Test your knowledge of radar technology with the NAV 5 Radar Quiz! This quiz consists of 60 carefully crafted questions that will assess your understanding of radar systems, their components, and fun
Whether you're a student, a teacher, or simply a radar enthusiast, this quiz is designed to engage you and enhance your knowledge. Here are some features of the quiz:
- 60 Multiple Choice Questions
- Covering a variety of radar topics
- Instant feedback on your answers
Wavelength indicates the number of crests, which pass a fixed point per unit time.
True
False
X-band radar has a wavelength of 10 cm.
True
False
Magnetron converts the input into high frequency oscillation.
True
False
The receiver amplify the incoming echoes.
True
False
A radar sweep is one complete 360 degree rotation of the antenna.
True
False
A long pulse means better resolution in range.
True
False
A short pulse means less resolution in range.
True
False
The bearing accuracy is generally better than the range accuracy of a radar.
True
False
The duplexer ensure that all circuits connected to the radar system operate in a definite time relationship with each other.
True
False
The antenna transfers the transmitter energy to signals in space with the required distribution and efficiency.
True
False
The change of frequency of a wave in relation to an observer who is moving relative to the wave source.
Doppler Radar
Continuous wave radar
Bistatic radar
Monopulse radar
Is a radar system that comprises of a transmitter and a receiver that are separated by a distance that is equal to the distance of the expected target.
Doppler Radar
Continuous wave radar
Bistatic radar
Monopulse radar
is designed to detect and track objects by processing reflections from non-cooperative source of illumination in the environment.
Passive radar system
Instrumentation radars
Weather radars
Monopulse radar
Uses radio waves along the horizontal or circular polarization.
Passive radar system
Instrumentation radars
Weather radars
Monopulse radar
Radar can detect SART.
X-Band Radar
S-Band Radar
Radar that can see small targets due to its high frequency.
X-Band Radar
S-Band Radar
Better for sea and rain clutter.
X-Band Radar
S-Band Radar
Has good sea clutter response, target less likely to be hidden.
X-Band Radar
S-Band Radar
Should enable the range of an object to be measured with an error not exceeding 1.5 per cent of the maximum range of the scale in use
Variable range marker
Electronic bearing line
ARPA should acquires up to _____ targets automatically.
20
25
30
35
_________ controls the overall amplification of all returned echoes.
GAIN
TUNING
BRILLIANCE
The _____________ reduces mutual radar interference.
MODE
INT REJECR
GUARD ALARM
INDEX LINES
This ____________ shows trails of target echoes in the form of simulated afterglow.
ECHO TRAILS
HM OFF
GUARD ALARM
INDEX LINES
The HM is used to temporarily ________ the heading marker.
Erase
Add
Change
INDEX LINES
This function provides an accurate measurement of range to targets.
VARIABLE RANGE MARKER (VRM)
ELECTRONIC BEARING LINE (EBL)
Adjusts the brightness of range rings.
RANGE RINGS
BAKGR COLOR
Selecting a short pulse length will ___________ range discrimination, making it possible to distinguish between a tug and its tow for instance.
Increase
Decrease
Will reduce the interference on the screen due to the rain and increase the chance of seeing targets within rain showers.
FTC (Fast Time Constant)
STC (Sensitivity Time Control)
Is a form of swept gain control which turns down the gain in the area of the screen where sea clutter echoes are found.
FTC (Fast Time Constant)
STC (Sensitivity Time Control)
The ___________ converts the transmitted/ received frequency of the radio wave back to a lower immediate frequency to allow proper amplifications of the returned echoes.
TUNING
GAIN
BRILLIANCE
The minimum acquired radar target capacity for ships more than 10,000 GRT is ________ targets.
40
20
30
The radar equipment should be designed to provide the ______________ and most consistent detection performance, restricted only by the physical limits of propagation.
Optimum
Least
The heading information should be displayed with a _______________ resolution to permit accurate alignment with the ship gyro system.
Numerical
Alphabetical
Numeral
An ARPA should present within _______________ of steady-state tracking the motion of a target with the following accuracy values (95% probability values).
1 minute
2 minutes
3 minutes
4 minutes
___________________ may be provided to shade the display from sunlight but not to the extent that it will impair the observer’s ability to maintain a proper look-out.
Screening
Provisions
Method of presentation
Range scales
It should be possible to cancel the display of unwanted ARPA data within ____________.
3 seconds
1 second
2 seconds
4 seconds
The speed of a target relative to own ship’s position.
Relative speed
True speed
Combination of true course and true speed.
True motion
Relative motion
Mode of display where own ship and all targets are referenced to the sea, using gyro heading and single axis log water speed input.
Sea stabilization
Ground stabilization
A minimum of _____ independent parallel index lines , with a means to truncate and switch off individual lines, should be provided.
Four
Eight
Twelve
Sixteen
The past position of targets being tracked is used to check the validity of the ARPA’s tracking.
True
False
There is NO delays in the display of processed ARPA information, particularly on acquisition and re-acquisition or when target maneuvers.
True
False
Most ARPA systems are less sensitive in auto-acquisition than in manual acquisition mode.
True
False
Misinterpretation of display symbols may NOT cause severe problems.
True
False
An ARPA system in the hands of unqualified personnel is NOT only dangerous, but can indirectly be the main reason for an accident.
True
False
ARPA converts digital signal to a raw radar echo which can then be display.
True
False
The radio signals emitted by RADAR system do NOT work beyond the ionosphere.
True
False
The data provided by RADAR system is usually complete.
True
False
RADAR system is prone to external interference by other medium.
True
False
RADAR systems provide data regarding the type of the target being resolved.
True
False
It is the process of observing changes in target position
Tracking
Detection
Selection
Plotting
The time estimated as measured along the echo line from its present position to the Closest Point of Approach.
TCPA
CPA
NTCPA
NCPA
This error between two plots will result in calculation of incorrect target course, speed and time to CPA.
Errors in Timing
Errors in Distance Measurement
Errors in Speed
Gyro Error
The horizontal angle between the direction of an object and another object.
Bearing
Course
Heading
The position of the other ship on RML at planned time of evasive action
Mx
NCPA
RML
NRML
The direction to an object from a point; expressed as a horizontal angle measured clockwise from true north.
True Bearing
Relative Bearing
In plotting triangle the side that represents the true course (direction) and speed (length) of our own vessel.
Side e→r
Side e→m
Side r→m
In plotting triangle the side that represents the true target course (direction) and true target speed (length).
Side e→r
Side e→m
Side r→m
In plotting triangle the side that represents the relative course (direction) and relative speed (length) of the target.
Side e→r
Side e→m
Side r→m
It is the recognition of the presence of the target.
Detection
Selection
Tracking
Plotting
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