NAV5 REVIEWER = HAPPY VALENTINES LALO NA SA MAHAL KO DYAN
NAV5 Radar Knowledge Quiz
Test your understanding of radar technology with our engaging NAV5 Radar Knowledge Quiz! This quiz is designed to assess your comprehension of radar systems, their fun
Whether you are a seasoned professional or a student eager to learn, this quiz offers:
- Challenging questions
- Feedback on your radar knowledge
- A fun and interactive way to learn
By increasing the peak power, the minimum radar range can be improved.
True
False
Radar reflector direct as much as possible of the reflected radar energy back to the radar antenna.
True
False
. The nearer the angle between the reflecting and the beam axis is 90 deg., the greater is the strength of the echo returned to the antenna.
True
False
Targets having larger reflecting areas return weaker echoes than targets having smaller reflecting areas.
True
False
. A smooth surface will give better radar echo because most of the energy is reflected in another direction.
True
False
An optical horizon is the point of the earth surface which is tangential to the propagated radar wave.
True
False
About 10 miles the sea return disappear when you use the anti-sea clutter control.
True
False
In a region with warm air blowing over on a colder sea, you will expect sub-refraction.
True
False
Radar sets with a wavelength of 3 cm have a better discriminating ability compared with the 1 cm wavelength.
True
False
Antenna not placed at the ships highest point will NOT create blind sector.
True
False
ARPA can acquires 10 targets automatically.
True
False
Rain clutter suppresses over the whole screen and can also suppress small targets which is a danger.
True
False
The antenna rotates in Stand by status.
True
False
The best tuning point condition is where the tuning indicator lights to about 80% of its total length.
True
False
. In True motion mode, Own ship and other moving objects move in accordance with their relative courses and speeds.
True
False
In North Up mode, the heading marker changes its direction according to the ship’s heading.
True
False
For stable reception of certain types of radar beacons (racons) or SART (Search and Rescue Radar Transponder) as required by SOLAS 1974 as amended 1988 (GMDSS), it is recommended to turn the interference rejector on
True
False
A target entering the guard zone produces both visual (flashing) and audible (beeping) alarms.
True
False
The anchor watch feature helps you monitor whether other ship is dragged by wind and/or tide while at anchor.
True
False
True vectors can be displayed relative to own ship’s heading (Relative) or with reference to the north (True).
True
False
The sensitivity of the ARPA tracking system is increased when operating in automatic acquisition mode.
TRUE
FALSE
The echoes are remain between guard rings when the search area philosophy is used by the ARPA tracking system.
True
False
The processing time depends on the antenna rotation time.
True
False
The information on the ARPA is always on delayed time in relation to “real life” and this fact must be taken into account at all times.
True
False
One of the reason for loosing targets in the ARPA system is when the target entering the abeam sector.
True
False
As range increase the accuracy of bearing and range information and tracking accuracy increases.
True
False
Accuracy of the vector will only be within acceptable limits after five minutes of steady tracking.
True
False
The target causing the warning shall be clearly indicated on the display.
True
False
Only a flashing warning is activated whenever the system no longer track a target.
True
False
Own ships position input must be kept. Correct on the ARPA at all times.
True
False
An ARPA symbol that indicate the initial stage of tracking before steady state tracking.
Cross cursor
Broken square around the echo
Selected target
Diamond or two triangle
An ARPA symbol on zone warning that used to mark the target.
Broken square around the echo
Diamond or two triangle
Cross cursor
Selected target
An ARPA symbol that used to mark the target which is predicted to close within a minimum range and time chosen by the observer.
Diamond or two triangle
Cross cursor
Selected target
Broken square around the echo
An ARPA symbol used to mark the target if a target is lost.
Diamond or two triangle
Broken square around the echo
Cross cursor
Selected target
An ARPA symbol that to be used as a symbol to mark the data reading target.
Diamond
Triangle
Square
Hexagon
An ARPA symbol used for target in acquisition state.
Circle on echo
Diamond below echo
Square outside the echo
Echo inside triangle
It is the North-Upward display in which the orientation of the display is fixed to an unchanging reference.
UNSTABILIZED
NORTH UP
STABILIZED
HEADING UP
It is the Heading-upward display in which the orientation changes with changes in own ship’s heading.
NORTH UP
UNSTABILIZED
HEADING UP
STABILIZED
It is a radial line or cross hair inscribed on a transparent disk which can be rotated manually about it’s axis coincident with the center of the PPI.
MECHANICAL BEARIN CURSOR
VRM
MRP CURSOR
SCALE AGENT NAVHAIR
It is used primarily to determine the ranges to target pips on the PPI.
VRM
MECHANICAL BEARIN CURSOR
SCALE AGENT NAVHAIR
MRP CURSOR
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