E0A01

What, if any, are the differences between the radiation produced by radioactive materials and the electromagnetic energy radiated by an antenna?

  1. RF radiation does not have sufficient energy to break apart atoms and molecules; radiation from radioactive sources does

E0A02

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

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

E0A03

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?

  1. Use a computer-based antenna modeling program to calculate field strength at accessible locations

E0A04

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?

  1. Each transmitter that produces 5% or more of its maximum permissible exposure limit at accessible locations

E0A05

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

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

E0A06

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

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

E0A07

What is the "far-field" zone of an antenna?

  1. The area where the shape of the antenna pattern is independent of distance

E0A08

What does SAR measure?

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

E0A09

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?

  1. Beryllium Oxide

E0A10

What material found in some electronic components such as high-voltage capacitors and transformers is considered toxic?

  1. Polychlorinated biphenyls

E0A11

Which of these items might be a significant hazard when operating a klystron or cavity magnetron transmitter?

  1. Injury from radiation leaks that exceed the MPE limits

 

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