Bridge Navigation & Deck Operations

Radar & ARPA Competence Test

This test covers the principles and practical use of marine radar and ARPA systems for safe navigation and collision avoidance. It includes questions on radar theory, equipment operation, echo interpretation, CPA/TCPA assessment, radar plotting, and compliance with COLREG. Ideal for navigational officers preparing for operational or management certification.

प्रश्न 15

समय सीमा 9 min

भाषा अंग्रेज़ी

नमूना प्रश्न

यहाँ इस क्विज़ के कुछ उदाहरण प्रश्न हैं। पूरा टेस्ट देने के लिए GYRO ऐप डाउनलोड करें।

प्रश्न 1

The purpose of radar is to enable ….

A the range and bearing of objects to be obtained.

B the wave-lengths of radio waves to be calculated.

C the echoes of targets to be separated.

D the speed of radio waves to be measured.

प्रश्न 2

Radar bearing discrimination depends mainly on which of the following?

A Horizontal beamwidth.

B Pulse length.

C Scanner rotation speed.

D Transmitted frequency.

प्रश्न 3

Radar reflectors are fitted to some buoys and small craft in order to ...

A provide positive identification.

B make them better radar targets.

C avoid mutual radar preference.

D obtain more accurate ranges.

प्रश्न 4

The principle of a racon is that it ...

A transmits continuously on X band.

B transmits at fixed time intervals.

C transmits when activated by an operator.

D transmits on receipt of ship’s radar pulse.

प्रश्न 5

Super-refraction is normally caused by ...

A warm air over cool sea surface.

B cool air over a warm sea surface.

C strong winds.

D disturbances in the upper atmosphere.

यह क्विज़ दें. इस क्विज़ को देने और अपनी प्रगति ट्रैक करने के लिए GYRO ऐप डाउनलोड करें।