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Worksheetsquiz 1 nav 5 10200
Total questions: 30
Worksheet time: 15mins
What does the term RADAR stand for?
Radio Direction And Roaming
Radio Designated Angle Reading
Radiated Distance And Research
Radio Detection And Ranging
Who discovered that radio waves could reflect off metals?
Heinrich Hertz
Thomas Edison
James Maxwell
Nikola Tesla
What is the name of the first practical radar system?
Radiodetector
Telemobiloscope
WavefinderScope
Echoanalyzer
Which war accelerated radar development?
World War One
Vietnam Battle
World War Two
Korean Conflict
Which marine radar bands are used onboard ships?
L band and M band
U band and W band
A band and Z band
X band and S band
Which component sends out radar pulses?
Receiver unit
Display system
Transmitter unit
Processor chip
What process follows reflection in radar sequence?
Reception phase
Emission phase
Transmission stage
Calculation step
What is the function of a radar receiver?
Manages fuel systems
Processes echo signals
Draws chart graphics
Generates loud alarms
What is the speed of radar wave travel in air?
250,000 km/sec
200,000 km/sec
300,000 km/sec
150,000 km/sec
Which principle allows radar to measure velocity?
Maxwell theory
Bernoulli law
Snell’s formula
Doppler effect
Which IMO resolution defines radar performance standards installed after 1 July 2008?
MSC.192(70)
MSC.115(65)
MSC.282(88)
MSC.192(79)
MSC.215(73)
What is required of radar range and bearing data under MSC.192(79)?
Provide approximate values only
Achieve general accuracy levels
Meet defined accuracy limits
Ignore tidal corrections
Display analog needle outputs
Which radar control reduces returns from rain?
Gain adjustment knob
Sea clutter control
Rain clutter control
Transmit range adjuster
Power phase selector
What does VRM on a radar do?
Measures vertical motion
Indicates true wind speed
Displays gyro error
Measures distance to target
Calculates wind direction
What do fixed range rings represent?
Estimated wave height
Ship’s compass error
Magnetic variation circles
Distance intervals from radar
Tidal rise from seabed
Why is stability of radar display important under rough sea conditions?
To improve weather updates
To adjust range automatically
To maintain clear display view
To reduce radar interference
To calculate water speed
Why should radar integrate with ARPA and AIS?
To identify port schedules
To receive radio broadcasts
To enhance decision making
To monitor engine status
To display radar thickness
What is the purpose of CPA/TCPA alarm settings in radar?
Alert for shallow seabed
Warn about target proximity
Report wave directions
Track AIS logbook entries
Align navigation satellites
Why is relative motion display ideal for collision avoidance?
Shows coastal geometry
Indicates wind direction
Depicts ship drift clearly
Reveals steady bearing risk
Marks fishing zones only
What happens in true motion radar display?
All targets rotate uniformly
Vessels appear fixed on screen
Only AIS tracks are displayed
Vessels move on actual course
Wind overlays are visible
You notice rain clutter obscuring targets near port. Which control do you adjust?
Display orientation mode
Range scale selector
Rain clutter suppressor
Power level modulator
CPA alarm level
A ship is crossing ahead on a steady bearing. What should you examine first?
Automatic Tuning Level
Gain and brilliance values
Rain clutter setting
CPA/TCPA values
VRM range rings
When monitoring coastal traffic using radar, which display mode is most effective?
AIS display only
Echo overlay view
Relative motion view
CPA directional plot
True motion display
The radar shows cluttered returns during heavy sea state. What control should you adjust?
Intercom feedback volume
CPA alarm ringing delay
Sea clutter suppression knob
Range ring spacing interval
Fixed echo offset setting
What is the primary advantage of S-band radar over X-band radar?
Higher resolution for small targets
Longer detection range due to lower frequency
Shorter wavelength for precise identification
Better compatibility with EPIRBs
What is the approximate frequency of S-band radar?
1 GHz
3 GHz
5 GHz
9 GHz
What is the approximate wavelength of S-band radar?
3 cm
5 cm
10 cm
15 cm
Which radar system is commonly used for detecting small targets?
S-band radar
X-band radar
EPIRB radar
ARPA radar
What is the detection range of a SART when used with X-band radar?
5 nautical miles
8 nautical miles
10 nautical miles
15 nautical miles
Why is S-band radar preferred for long-range surveillance?
It operates at a higher frequency for better resolution
Its longer wavelength penetrates weather interference
It provides a unique pattern of dots for rescue operations
It is compatible with harbor traffic control systems
