E0 Safety

Question 1

E0A01 (B)

What is the primary function of an external earth connection or ground rod?

Answer 1

B. Lightning protection

Question 2

E0A02 (B)

When evaluating RF exposure levels from your station at a neighbor’s home, what must you do?

Answer 2

B. Make sure signals from your station are less than the uncontrolled MPE limits

Question 3

E0A03 (C)
Which of the following would be a practical way to estimate whether the RF fields produced by an amateur radio station are within permissible MPE limits?

Answer 3

C. Use an antenna modeling program to calculate field strength at accessible locations

Question 4

E0A04 (C)
When evaluating a site with multiple transmitters operating at the same time, the operators and licensees of which transmitters are responsible for mitigating over-exposure situations?

Answer 4

C. Each transmitter that produces 5 percent or more of its MPE limit at accessible locations

Question 5

E0A05 (B)

What is one of the potential hazards of using microwaves in the amateur radio bands?

Answer 5

B. The high gain antennas commonly used can result in high exposure levels

Question 6

E0A06 (D)

Why are there separate electric (E) and magnetic (H) field MPE limits?

Answer 6

A. The body reacts to electromagnetic radiation from both the E and H fields
B. Ground reflections and scattering make the field impedance vary with location
C. E field and H field radiation intensity peaks can occur at different locations
D. All of these choices are correct

Question 7

E0A07 (B)

How may dangerous levels of carbon monoxide from an emergency generator be detected?

Answer 7

B. Only with a carbon monoxide detector

Question 8

E0A08 (C)

What does SAR measure?

Answer 8

C. The rate at which RF energy is absorbed by the body

Question 9

E0A09 (C)
Which insulating material commonly used as a thermal conductor for some types of electronic devices is extremely toxic if broken or crushed and the particles are accidentally inhaled?

Answer 9

C. Beryllium Oxide

Question 10

E0A10 (A)

What toxic material may be present in some electronic components such as high voltage capacitors and transformers?

Answer 10

A. Polychlorinated Biphenyls

Question 11

E0A11 (C)

Which of the following injuries can result from using high-power UHF or microwave transmitters?

Answer 11

C. Localized heating of the body from RF exposure in excess of the MPE limits