Ch3 Flashcards
What is a series circuit?
A circuit where all components are connected in a single path.
Example: Series circuits are commonly used in simple electrical devices.
What is a control circuit?
A circuit that manages the operation of electrical devices.
Example: Control circuits are crucial for regulating the functions of various equipment.
Safety devices in an electrical circuit are connected in…
Series with the load.
Example: Safety devices like fuses are often placed in series to protect the equipment.
How are series circuits used in air-conditioning equipment?
To control operations by ensuring components receive power in sequence.
Example: Series circuits help in controlling the cooling process efficiently.
Why are series circuits used for most control circuits?
To ensure that if one component fails, the entire circuit stops.
Example: Series circuits are reliable for safety reasons in control systems.
The current draw in a series circuit is…
The same throughout the entire circuit.
Example: In a series circuit, the current remains constant at every point.
The total voltage drop of a series circuit is…
Equal to the voltage being applied to the circuit.
Example: The sum of voltage drops across all components equals the input voltage.
How would switches used as safety devices be connected with respect to the loads they are protecting?
In series with the loads.
Example: Safety switches are connected in series to interrupt the circuit in case of a fault.
What is a parallel circuit?
A circuit where components are connected across the same two points, each with its own path.
Example: Parallel circuits are commonly used in household wiring systems.
Parallel circuits are used in the air-conditioning industry to…
Supply the correct line voltage to each load.
Example: Parallel circuits ensure consistent power distribution to various components.
Why are parallel circuits used in the air-conditioning industry?
To ensure components can operate independently.
Example: Parallel circuits prevent one component failure from affecting others.
True or False: The current draw of a parallel circuit is the sum of the current of each branch circuit.
True.
Example: The total current in a parallel circuit is the sum of currents in individual branches.
If three circuits are connected in parallel with a power supply of 30 volts, what would be the voltage supplied to each circuit?
30 volts.
Example: In a parallel circuit, all components receive the same voltage.
If two 115-volt loads were connected in parallel with 240 volts, they would…
Burn correctly.
Example: Parallel connection allows each load to operate at its rated voltage.
What is a series-parallel circuit?
A circuit that combines elements of both series and parallel configurations.
Example: Series-parallel circuits offer flexibility in designing complex electrical systems.
