RADAR Equipment

Question 1

The permanent magnetic field that surrounds a traveling-wave tube (TWT) is intended to:

Answer 1

Prevent the electron beam from spreading.

Question 2

Prior to testing any RADAR system, the operator should first:

Answer 2

Assure no personnel are in front of the antenna.

Question 3

In the term “ARPA RADAR,” ARPA is the acronym for which of the following?

Answer 3

Automatic RADAR Plotting Aid.

Question 4

Which of the following is NOT a precaution that should be taken to ensure the magnetron is not weakened:
•Do not subject it to shocks and blows.

•Do not subject it to excessive heat.

•Keep the TR properly tuned.

•Keep metal tools away from the magnet.

Answer 4

Keep the TR properly tuned.

Question 5

Exposure to microwave energy from RADAR or other electronics devices is limited by U.S. Health Department regulations to ____ mW/centimeter.

Answer 5

5.0

Question 6

RADAR collision avoidance systems utilize inputs from each of the following except your ship’s:

Answer 6

Anemometer