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A detailed illustration of a radar system in action, with a ship navigating at sea, radar waves visualized, and targets appearing on the radar screen.

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 functionalities, and their applications at sea.

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

40 Questions10 MinutesCreated by NavigatingWave932

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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NAV5 REVIEWER = HAPPY VALENTINES LALO NA SA MAHAL KO DYAN

NAV5 Radar Knowledge Quiz

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