Which of the following is a safety hazard of a 12-volt storage battery?
What health hazard is presented by electrical current flowing through the body?
In the United States, what is connected to the green wire in a three-wire electrical AC plug?
What is the purpose of a fuse in an electrical circuit?
Why is it unwise to install a 20-ampere fuse in the place of a 5-ampere fuse?
What is a good way to guard against electrical shock at your station?
Which of these precautions should be taken when installing devices for lightning protection in a coaxial cable feed line?
What safety equipment should always be included in home-built equipment that is powered from 120V AC power circuits?
What should be done to all external ground rods or earth connections?
What can happen if a lead-acid storage battery is charged or discharged too quickly?
What kind of hazard might exist in a power supply when it is turned off and disconnected?