What is one way that RF energy can affect human body tissue?
AIt heats body tissue
general pool
Subelement G0 question review
All 25 official questions with the exact winning phrase marked.
Which of the following is used to determine RF exposure from a transmitted signal?
DAll these choices are correct
How can you determine that your station complies with FCC RF exposure regulations?
DAll these choices are correct
What does “time averaging” mean when evaluating RF radiation exposure?
DThe total RF exposure averaged over a certain period
What 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?
ATake action to prevent human exposure to the excessive RF fields
What must you do if your station fails to meet the FCC RF exposure exemption criteria?
APerform an RF exposure evaluation in accordance with FCC OET Bulletin 65
What is the effect of modulation duty cycle on RF exposure?
AA lower duty cycle permits greater power levels to be transmitted
Which of the following steps must an amateur operator take to ensure compliance with RF safety regulations?
CPerform a routine RF exposure evaluation and prevent access to any identified high exposure areas
What type of instrument can be used to accurately measure an RF field strength?
BA calibrated field strength meter with a calibrated antenna
What 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?
CTake precautions to ensure that the antenna cannot be pointed in their direction when they are present
What precaution should be taken if you install an indoor transmitting antenna?
CMake sure that MPE limits are not exceeded in occupied areas
What stations are subject to the FCC rules on RF exposure?
DAll stations with a time-averaged transmission of more than one milliwatt
Which wire or wires in a four-conductor 240 VAC circuit should be attached to fuses or circuit breakers?
AOnly the hot wires
According to the National Electrical Code, what is the minimum wire size that may be used safely for wiring with a 20-ampere circuit breaker?
CAWG number 12
Which size of fuse or circuit breaker would be appropriate to use with a circuit that uses AWG number 14 wiring?
D15 amperes
Where should the station’s lightning protection ground system be located?
BOutside the building
Which of the following conditions will cause a ground fault circuit interrupter (GFCI) to disconnect AC power?
BCurrent flowing from one or more of the hot wires directly to ground
Which of the following is covered by the National Electrical Code?
CElectrical safety of the station
Which of these choices should be observed when climbing a tower using a safety harness?
BConfirm that the harness is rated for the weight of the climber and that it is within its allowable service life
What should be done before climbing a tower that supports electrically powered devices?
BMake sure all circuits that supply power to the tower are locked out and tagged
Which of the following is true of an emergency generator installation?
AThe generator should be operated in a well-ventilated area
Which of the following is a danger from lead-tin solder?
ALead can contaminate food if hands are not washed carefully after handling the solder
Which of the following is required for lightning protection ground rods?
DThey must be bonded together with all other grounds
What is the purpose of a power supply interlock?
CTo ensure that dangerous voltages are removed if the cabinet is opened
Where should lightning arrestors be located?
AWhere the feed lines enter the building