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WorksheetsPRETEST NAV 5 5
Total questions: 45
Worksheet time: 23mins
It is among the limitation of a Radar system wherein detection is limited owing to the area where radio waves are blocked due to structural construction near the scanner?
Blank Sector position
Blind Point
Back Section Area
Blind Sector Area
It is a type of Radar system enhanced with automatic plotting, acquisition and collision avoidance system?
Automatic Radar Acquisition Aid
Automatic Radar Plotting Aid
Automatic Collision Avoidance System
Automatic Radar Advance System
In what principle was the Radar was based?
Principles of Sound Waves
Current principle
Principle of an Echo
Principles of Motion
The abbreviation RADAR means?
Radio Directing and Ranging
Radio Direction and Ranging
Radio Detecting and Ranging
Radio Directional and Range
It is a part of the Radar System that is responsible in sending a quick burst of radio signals in the form of pulses thru the scanner?
Conductor
Transmitter
Modulator
Antenna
The 9 GHZ Radar is often called the ___________?
S-Band Radar Unit
X-Band Radar Unit
A-Band Radar Unit
Z-Band Radar Unit
It is the system check performed upon the Radar Unit to check its performance to the current time of operation normally taken each Watch Officer during their tour of duty?
Control Monitor
Standard Monitor
Performance Monitor
Receiver Monitor
It is a visible indication presented in the screen of a Radar unit as indication of a possible detected object?
Point
Echo
Target
Sidelobe
It is a part of the Radar System that directly received returning echo after initial transmission?
Radar Scanner
Radar Duplexer
Radar Screen
Plan Position Indicator
It is one control button of a Radar unit to reduce the interference or effect of rain in the ship area?
Object Clutter
Rain Clutter
Movement Clutter
Fog Clutter
It is one control button of a Radar unit to reduce the interference or effect of sea in the ship area?
Sea Clutter
Water Clutter
Crest Clutter
Trough Clutter
It is a control in the Radar panel use to increase brightness of the displayed targets or echos?
Brilliance Control
Volume Control
Tunning Control
Frequency Control
It is that part of a Radar Unit that serves the function as coordinator to the other parts of the system?
Modulator
Wave guide
Receiver
Control Knob
This point represents the center of the screen of a Radar Unit display or the Maneuvering Board?
e-r point of the Vector
m-point of the Vector
Relative point of Vector
e-point of the Vector
The S-Band Radar which is sometimes referred to as the Short Range Radar has an scanner of __________?
15 Cm Vertical beam width scanner
3 Cm Vertical beam width scanner
7 Cm Vertical beam width scanner
10 Cm Vertical beam width scanner
It is often referred to as the 10 Cm Radar unit mainly used to detect target nearby at closer distances.
Z-Band Radar System
S-Band Radar System
A-Band Radar System
Sart Band Radar System
It is part of the Radar unit used to adjust the detection capability of objects around the vicinity reflected in the screen or display?
Gain Control
Volume Control
STC – Sensitivity Time Control
Range Control
In what other aspect can a Radar Unit detection capability depends on?
Breadth of Scanner
View of the Scanner
Height of Scanner
Length of the scanner
What other limitations of all the 5 Major Parts of the Radar System, which is the most important to say is?
Transmitter / Receiver - RX
Antenna or Scanner
Power Source
Display Unit
What other limitations do we have in a Radar System?
Vertical and Horizontal Limitation
High and Low Discrimination limitation
Range and Bearing Discrimination limitation
Echo and Object Discrimination limitations
This statement is true with Radar detection capability?
Large and small targets have same size echo presentation in the screen
Return echo representation on the screen are dependent to the size of target
Rain and Sea returns does not affect Radar detection capability
A Radar Operator has no role in Radar detection capability
It is a connected element to the Radar Transmitter (TX) that is responsible in sending out a quick burst of pulses of radio signals?
Trinitron
Qualitron
Magnetron
Radiotron
If one type of Radar Scanner or Antenna is the Parabolic Antenna the other one is the?
Flat Antenna
Slotted Wave Guide Antenna
Aerial Antenna
Cell Site Antenna
How many approx. turns the scanner must complete before the initial display of targets are achieve in the operation of a radar system?
Approx. 50 Turns
Approx. 10 Turns
Approx. 25 Turns
Approx. 20 Turns
What is the rate of the Scanner, turns per minute a normal Radar Unit have?
20 Turns per minute
30 Turns per Minute
50 Turns per minute
40 Turns per minute
Radar signals can penetrate medium such as clouds, fogs mist and snow?
Maybe
Sometimes
Yes
Not possible
Ability of the Radar set to clearly distinguish two small targets on the same bearing at slightly different range?
Bearing Discrimination
Range Discrimination
Echo Discrimination
Sidelobes Discrimination
In Collision avoidance in ARPA System, the abbreviation CPA means?
Closes Point of Alteration
Closes Point of Approach
Closes Point of Action
Closes Point of Attention
What do the abbreviation TCPA in Radar ARPA?
Termination of Closest Point of Approach
Time of Closest Point of Approach
Time of Closest Point of Attention
Time of Closes Point
Ability of the Radar set to clearly distinguish two small targets on the same range at slightly different bearing?
Bearing Discrimination
Range Discrimination
Sidelobes Discrimination
Echo Discrimination
It is referred to as the bounce of energy back and forth, entering scanner in each bounce?
Multiple Echo
Trace Echoes
Side Lobes
Pip Echoes
A presentation EBL in Radar ARPA means?
Electronic Bearing Line
Estimated Bearing Line
Electronic Board Line
Electronic Beam Line
A presentation VRM in Radar ARPA means?
Variable Radar marker
Variable Range Marker
Variable Ranger Marker
Variable Rate Marker
Radars and ARPA are integrated into a full suite of marine equipment’s, one of this is the?
Global Positioning System
Cargo Loading Computer
Hulls and Stress Monitoring Equipment
Interface Ullage Detector
A marine equipment interfaced with the Radar / ARPA Units for speed inputs?
Doppler Speed Indicator
Rudder Indicator
Barometric Pressure Indicator
Sound Reception Indicator
One ability of a Radar ARPA unit in operation is?
Can measure the distance and indicate the bearing of an object at sea.
Can determine height status of an object at sea
Can calculate the actual size of the object detected
Can slightly move a target position
It is one capability of an ARPA Radar regarding detection of targets?
Sound acquisition
Automatic acquisition
Noise cancelling capabality
Trial Acquisition
The abbreviation TCPA means in relation to Radar ARPA?
Time of Close Position Acquisition
Time of Closest Point of Approach
Terminal of Close Position Approach
Terminal Cancelling Position Alarm
The most obvious advantage of as Raster Scan Radar Display over the Plan Position Indicator display is?
Brightness of the Radar screen
Bigger size of Radar screen
Target Acquisition is short in time
Target Acquisition alarm is better
It is a marine navigational equipment interfaced to a Radar/ARPA unit in order to have directional reference?
Gyro Compass input
Dead Compass input
Magnetic Compass input
Azimuth Circle input
Another ability of a Radar ARPA unit in operation is?
Radar signals can detect one target at a time
Radar can received sound signals aside from detecting
Radar signals can target several objects simultaneously
Radar signals are strongest at daytime rather at night
Capabilities of Radar ARPA units must be compliant to?
MEPC Safety Standards
IMO Performance Standards
WHO Standards
Marina Standards
Own ship vector as represented in the e-r-m Vector in Manual Radar Plotting represents the own ship speed and direction?
e to r Vector
e to m Vector
r to m Vector
e to mx Vector
Screen size of a Radar ARPA display is specified by the length of the diagonal and the height - width ratio is?
3:2 Units of measurement
5:3 Units of measurement
3:4 Units of measurement
4:3 Units of measurement
The abbreviation of SART mean, this equipment is interrogated by X-Band Radars?
Search and Rescue Radar Transponder
Sea and Research Radar Transponder
Search and Rate Return Transponder
Search and Receiver Retention Transponder
