G0 Electrical and RF Safety

25 questions in the pool. Your exam will include 2, one from each group below.

Practice G0 now

G0A

RF safety principles, rules, and guidelines; routine station evaluation

• G0A01What is one way that RF energy can affect human body tissue?
• G0A02Which of the following is used to determine RF exposure from a transmitted signal?
• G0A03How can you determine that your station complies with FCC RF exposure regulations?
• G0A04What does “time averaging” mean when evaluating RF radiation exposure?
• G0A05What must you do if an evaluation of your station shows that the RF energy radiated by your station exceeds permissible limits for possible human absorption?
• G0A06What must you do if your station fails to meet the FCC RF exposure exemption criteria?
• G0A07What is the effect of modulation duty cycle on RF exposure?
• G0A08Which of the following steps must an amateur operator take to ensure compliance with RF safety regulations?
• G0A09What type of instrument can be used to accurately measure an RF field strength?
• G0A10What should be done if evaluation shows that a neighbor might experience more than the allowable limit of RF exposure from the main lobe of a directional antenna?
• G0A11What precaution should be taken if you install an indoor transmitting antenna?
• G0A12What stations are subject to the FCC rules on RF exposure?

G0B

Station safety: electrical shock, grounding, fusing, interlocks, and wiring; antenna and tower safety

• G0B01Which wire or wires in a four-conductor 240 VAC circuit should be attached to fuses or circuit breakers?
• G0B02According to the National Electrical Code, what is the minimum wire size that may be used safely for wiring with a 20-ampere circuit breaker?
• G0B03Which size of fuse or circuit breaker would be appropriate to use with a circuit that uses AWG number 14 wiring?
• G0B04Where should the station's lightning protection ground system be located?
• G0B05Which of the following conditions will cause a ground fault circuit interrupter (GFCI) to disconnect AC power?
• G0B06Which of the following is covered by the National Electrical Code?
• G0B07Which of these choices should be observed when climbing a tower using a safety harness?
• G0B08What should be done before climbing a tower that supports electrically powered devices?
• G0B09Which of the following is true of an emergency generator installation?
• G0B10Which of the following is a danger from lead-tin solder?
• G0B11Which of the following is required for lightning protection ground rods?
• G0B12What is the purpose of a power supply interlock?
• G0B13Where should lightning arrestors be located?