final

In a parallel circuit, the current flow through the inductor will be _____.

90° out of phase with the voltage

For parallel resonant circuits, the correct formula relating ITANK, Q, and ILINE is _____.

Q = ITANK / ILINE

What is the process of separating elements electrically?

electrolysis

A list of metals showing their willingness to accept electrons is called the _____ series of metals.

electromotive

ER represents voltage drop across the resistor.

true

The number of cycles completed in 1 second is called a _____.

frequency

Variable capacitors generally contain a(n) _______________.

set of movable plates

What is a measure of the amount of acid contained in water?

specific gravity

Reactive power is always:

90° out of phase with true power

IR represents current flow through the inductor.

false

If the area of the plates of a capacitor is increased, the amount of capacitance:

increases

The alternator must supply the _____ for each of the loads.

line current

What is used to describe the amount of interference caused by an unwanted signal?

noise-to-signal ratio

Which value is often the simplest measurement to make when using an oscilloscope?

peak to peak

What type of cell cannot be recharged?

primary

In a series circuit, the total _____ is equal to the sum of the individual resistors.

resistance

Which measures magnitude only?

scalar

In a wye-connected system, the line voltage is higher than the phase voltage by a factor of _____.

square root of three

Lead-acid batteries use an electrolyte containing _____.

sulfuric acid

The _______________ indicates the amount of capacitance change with temperature.

temperature coefficient

Capacitors help reduce or eliminate voltage spikes and surges by the current- limiting effect of a capacitor beingaffected by the frequency.

true

Motor loads appear to be resistive because there is a conversion of electrical energy into mechanical energy.

true

Resistive-capacitive series circuits are similar to resistive-inductive series circuits.

true

With what does inductive quantity and circuit total quantity need to be used to find like resistive quantities?

vector addition

What does ER represent?

voltage drop across the resistor

Of the different power values in an RL circuit, which one is known as apparent power?

VA

During the period of time that the circuit is not at resonance, what is limited by the combination of inductive reactance and capacitive reactance?

current flow

What kind of circuits should use conductors that have a very large surface area to help reduce the increased conductor resistance due to the skin effect?

high-frequency

One type of non-sinusoidal waveform is the:

square wave

A device that uses electromagnetic induction to transfer electrical energy from one circuit to another is a(n):

transformer

In an RLC series circuit, the ratio of resistance, inductance, and capacitance determines how much the applied _____ leads or lags the circuit current.

voltage

What is defined as a dramatic increase in voltage lasting 2 nanoseconds or less?

voltage spike

Line current and phase current are the same in the _____ configuration.

wye

In an inductive AC circuit, when the applied voltage is at its maximum negative value, the current is:

zero

The amplitude of a waveform is measured from _____.

zero to the highest value obtained in either direction

Which of the following is a primary cell?

zinc-air

Three-phase voltages are _____ out of phase with each other.

120°

The voltage rating of electrolytic or polarized capacitors is always given in what type of volts?

DC

The amount of energy a cell can deliver is called its _____ capacity.

current

What is the process of depositing atoms of one type of metal onto another using electricity?

electroplating

Using the Pythagorean theorem, what is represented as "c"?

hypotenuse

Which of the following is a circuit total quantity?

impedance

Circuits are generally considered to contain _____ when any type of load that contains a coil is used.

inductance

When calculating resonant frequency, what does the value L represent?

inductance

A ceiling fan has a light kit attached to the fan. What type of load is the ceiling fan?

inductive

The capacitive reactance of a capacitor is _____ proportional to frequency.

inversely

A capacitor has a capacitance of how many farad(s) when a change of 1 volt across its plates results in a movement of 1 coulomb?

one

Multiplying like signs such as, - x -, produces what kind of product?

positive

In a series RL circuit, the angle between the voltage and current is called angle theta (∠θ). The cosine of the angle is equal to the _____.

power factor

The no-load voltage of a cell is greater than the normal load voltage because of the internal _____ of the cell.

resistance

_____________ waves are so named because the voltage at any point along the waveform is equal to the maximum, orpeak, value multiplied by the sine angle of rotation.

sine

Thermocouples produce voltage because of the action of two dissimilar metals. The voltage produced depends on the type of metals used and the _____ difference between the junction and the open ends.

temperature

When calculating an RC parallel circuit value, what does IT represent?

total circuit current

In a DC circuit, the product of volts times the amperes is called the _____ power.

true

In an R-L parallel circuit, the angle theta is the angle produced by the apparent power and the true power.

true

Subtraction of the inductive reactance and capacitive reactance in an RLC series circuit, permits the impedance of the circuit to become less than either or both of the reactances.

true

The amount of voltage induced into a conductor depends on the turns of wire, the strength of the magnetic field, and the speed of the cutting action.

true

What can be calculated by multiplying the voltage dropped across the resistor by the current flow through the resistor?

watts

An electric motor is considered to be an_________ circuit.

R-L series

What is a device that opposes a change of voltage?

a capacitor

In the formula Q = C x V, what does Q stand for?

charge in coulombs

What do ceramic capacitors often use?

color codes

The conductor offers some amount of ohmic resistance to the flow of electrons, depending on the type of material from which the conductor is made, its length, and its _______.

diameter

As the resistor is charged, an impressed voltage is developed across its plates as an electrostatic charge is built up.

false

Atmosphere pressure is 24 pounds per square inch (PSI) at sea level.

false

Vectors are used to represent magnitude only and not direction.

false

Which of the following metals would not accept electrons more easily than the others listed?

gold

In a right triangle, the longest side is called the _____.

hypotenuse

What has its primary and secondary winding physically and electrically separated from each other?

isolation transformer

If an RLC series circuit contains more inductive VARs than capacitive VARs, the circuit has a _____ power factor.

lagging

If a capacitor is ____________, the dielectric will appear to be a much lower resistance and the Q rating will decrease.

leaking

What type of AC waveform features voltage rising at a constant rate with respect to time?

linear

The amount of resistance compared with the inductive reactance determines the _____ of the coil.

quality (Q)

In the quality of a capacitor formula, what is represented by VARs?

reactive power

Volt-amperes-reactive is used to measure the _____ in a pure inductive circuit.

reactive power

When calculating values in an RLC parallel circuit, what does VARSC represent?

reactive power of the capacitor

In a resistive-inductive parallel circuit, the voltage applied to any device in parallel must be ______.

the same

​In a series RC circuit, total impedance is a combination of resistance and capacitive reactance.

true

Power factor (PF) is the ratio of the _____ power to the _____ power.

true; apparent

A line that indicates both magnitude and direction is a _____.

vector

During the period of time known as the first time constant of an exponential curve, the current will rise to about _____ percent of its full value.

63.2

The operating principles of the cathode-ray tube were discovered by _____.

J.J. Thomson

What is the unit of measurement for inductance?

henry (H)

When current rises and falls at the same rate as the voltage and reverses the direction of flow when the voltage reverses polarity, the current is said to be _____ with the voltage.

in phase

When resistance and capacitive reactance are 90° degrees out of phase with each other, they form a right triangle. What is the impedance?

they hypotenuse

If a three-phase load is a pure reactive load, then the power calculated has units of _____.

VARs

The symbol for reactive power of an inductor is _____.

VARs

How is voltage drop across the resistor represented?

ER

___________ loads are loads characterized by the facts that they produce heat and the current and voltage are in phase with each other.

Resistive

Direct current is used as the power source in electroplating.

True

Of the different power values in an RC circuit, which is known as apparent power?

VA

Resistance and capacitive reactance are 90° out of phase with each other. What do they form?

a right triangle

The power factor can be defined as the ratio of true power to:

apparent power

If the phase angles of two sine waves are both 0 degrees, then the waves:

are in phase

Which are commonly used in cameras, watches, hearing aids, and handheld calculators?

button cells

What are typically used to help eliminate voltage spikes and surges?

capacitors

The LeClanché cell is also known as a(n) _____ cell.

carbon-zinc

One method of adding two vectors that originate at the same point is the _____ method.

parallelogram

Opening the secondary circuit of a current transformer under load will cause a dangerous level of:

induced high voltage

The symbol XL stands for _____.

inductive reactance