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Electric Circuits Chapter 3

Terms in this set (27)

What is the complete path of an electric current, along with any necessary elements, such as a power source and a load.
Electric Circuit.
When the circuit is complete so that the current can flow, it is termed _____ or _____.
Closed, made.
When the path of current flow is interrupted, the circuit is termed ____ or ____.
Open, broken.
What does the opening and closing of electrical switches connected in series with electrical loads control?
The operation of loads in the circuit.
What must all electric circuits must have a ______ for electrons to flow through.
Complete path.
The series circuit also contains any safety devices, why?
Needed to maintain safe operation of the equipment components.
What is the change called when the voltage of a series circuit changes through each load?
Voltage drop.
What is voltage drop?
The amount of voltage-electric pressure used or lost through any load or conductor in the process of moving the current through that part of the circuit.
The _____ circuit has more than one path for the electron flow.
Parallel.
What type of circuit allows the same voltage to be applied to all the electric loads connected in it?
Parallel circuit.
What type of systems are parallel circuits used in for all power wiring that supplies loads?
Heating, cooling, or refrigeration.
The _____ in a parallel circuit is determined for each part of the circuit.
Current draw.
The ____ of the entire parallel circuit is the sum of the currents in the individual sections of the parallel circuit.
Total current draw.
What type of circuit is often used to combine control circuits with circuits that supply power to loads?
Series-parallel.
What is a Series-Parallel circuit?
A combination circuit made of series and parallel.
What does the use of parallel circuit enable in the electric circuitry of equipment?
The correct voltage to be supplied to the loads.
Why are Series circuits used in the electrical circuitry of air-conditioning equipment?
For control and safety switches that stop and start loads to maintain the correct temperature and safe operating conditions.
What is a series circuit?
An electric circuit that has only one path through which electricity may flow.
What is a control circuit?
A circuit that controls some load in the entire control system, whether it be a relay or control coil or a major load.
Safety devices in an electric circuit are connected in ____ with the load.
Series.
How are series circuits used in air-conditioning equipment?
To operate the equipment and maintain a desired temperature.
Why are series circuits used for most control circuits?
To stop the function for safety and control.
The current draw in a series circuit is _____________.
The same throughout the entire circuit.
How would switches used as safety devices be connected with respect to the loads they are protecting?
In series.
What is a parallel circuit?
An electric circuit that has more than one path for current flow.
Parallel circuits are used in the air-conditioning industry to ______.
Supply the correct line voltage to several circuits.
What are the three type of circuits used in the industry?
Series, parallel, and series parallel.
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