MEP Chapter 23 Questions

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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.


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