MEP Chapter 23 Questions
parallel connection
A _____ has two or more components connected so that there is more than one path for current flow.
F
A parallel connection has two or more components connected so there is only one path for current flow.
T
A schematic or line diagram is normally used when illustrating a series-connected circuit.
F
All switches connected in series must be open before current flows in the circuit.
F
Changing a circuit's power changes the amount of current flowing through the circuit.
voltage drop
Conductors should be sized large enough to prevent no more than 3% ____ from the power source to the load.
parallel
Connecting loads in _____ is the most common method used to connect loads.
reactance (X)
In circuits that contain inductance (Xl), or capacitance (Xc), the opposition to the flow of current is ______.
T
Ohm's law and the power formula are limited to circuits in which electrical resistance is the only significant opposition to the flow of current.
T
Ohm's law and the power formula may be combined mathematically and written as any combination of voltage (E), current (I), resistance (R), or power (P).
F
Ohm's law is the relationship between voltage, current, and power in a circuit.
T
Ohm's law is used in design applications and troubleshooting applications.
current
Ohm's law states that ____ in a circuit is equal to voltage divided by resistance.
voltage
Ohm's law states that if the ____ in a circuit remains constant, a change in resistance produces an inversely proportional change in current.
F
Ohm's law states that resistance in a circuit is equal to voltage times current.
T
Ohm's law states that resistance in a circuit remains constant, a change in current is directly proportional to a change in voltage.
T
Ohm's law states that voltage in a circuit is equal to resistance times current.
series
Switches, loads, meters, fuses, circuit breakers, and other electrical components can be connected in ______.
power formula
The ____ is the relationship between power, voltage, and current in an electrical circuit.
voltage drop
The ______ across each load is the same if the resistance values are the same.
F
The amount of power produced by a load is equal to the voltage drop across the load added to the current through the load.
series
The current in a circuit containing _______-connected loads is the same throughout the circuit.
T
The current in the circuit may be found for any given voltage by applying Ohm's law.
resistance
The higher the power rating of a load, the lower the _____ value.
current
The power formula is useful when determining expected _____ values because most electrical equipment lists a voltage and power rating.
divided by
The power formula states that current in a circuit is equal to power _____ voltage.
F
The power formula states that if the voltage in a circuit remains constant and the power required from the circuit changes, the current in the circuit remains constant.
F
The power formula states that power in a circuit is equal to voltage divided by current.
divided by
The power formula states that voltage in a circuit is equal to power ______ current.
resistance
The total _____ in a circuit containing series-connected loads equals the sum of the resistances of all loads.
smallest
The total resistance in a circuit containing parallel-connected loads is less than the _____ resistance value.
series
The voltage applied across loads connected in ______ is divided across the loads.
higher
When troubleshooting a circuit, an overloaded circuit has a(n) _____ than normal current reading.
Power
_____ is produced when voltage is applied to a load and current flows through the load.
Manually-operated
_______ switches are often connected in series with automatic switches.
