10 Questions
What is a short circuit?
A connection of two or more conductors where the current flows through the connection
What is the purpose of a circuit breaker?
To protect against overload or short circuit
What is Watt's Law for troubleshooting electrical systems?
W = V x A x p.f
What is the power factor for resistive loads such as heaters or light bulbs?
Equal to 1.0
What is the purpose of using non-corrosive materials for switch contacts?
To prevent corrosion from preventing the switch from working
What happens when a fuse operates?
It has to be replaced
What is the purpose of a switch?
To change the flow of a circuit
How do you determine the load on a circuit that trips a breaker?
By adding the wattage of each component and dividing by the circuit voltage
What type of loads have a power factor less than 1.0?
Capacitive loads such as motors
What is the function of a circuit breaker in terms of size?
It varies in size from small breakers to large switchgear
Learn about the fundamentals of AC and DC electricity, including the differences between them, their applications, and why AC is preferred for power supply.
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