Fundamentals Written Final Prep

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Question 1 of 97

The most commonly accepted theory regarding electricity says that an electric current is a flow of ____________________ through a conductor.

Select one of the following:

Primordial aether
Neutrinos
Electrons
Protons

Explanation

Question 2 of 97

In the realm of electricity - as is also the case in pneumatics and hydraulics - current moves from a location of pressure to an area of pressure.

Select one of the following:

low; high
high; low
negative; positive
equivalent; high

Explanation

Question 3 of 97

The name of the unit we use to describe our body weight is the pound. Likewise, the name of the unit we use to describe electrical pressure is the ____________.

Select one of the following:

amp
volt
ohm
watt

Explanation

Question 4 of 97

The name of the unit we use to describe electrical current is the ____________.

Select one of the following:

amp
volt
ohm
watt

Explanation

Question 5 of 97

The name of the unit we use to describe resistance against the flow of electrical current is the ____________.

Select one of the following:

amp
volt
ohm
watt

Explanation

Question 6 of 97

All materials give at least some amount of resistance to the flow of electricity. However, the resistance given by some metals is very small and we say these metals are good ____________.

Select one of the following:

insulators
semiconductors
conductors
heaters

Explanation

Question 7 of 97

There is a mathematical relationship between the voltage, current, and resistance in an electrical circuit. We express this relationship with the equation E = I x R. This relationship is called ____________ Law.

Select one of the following:

Lenz's
Ohm's
Tesla's
Watt's

Explanation

Question 8 of 97

When a large number of free electrons collect on a piece of non-conductive material, creating an electric field which might attract hair and small bits of paper, we call this an example of ____________ electricity.

Select one of the following:

static
current
neutral
kinetic

Explanation

Question 9 of 97

One pole of a small, permanent bar magnet, if it is left free to move, will point toward the north geographic pole of the earth. Which magnetic pole of the small magnet points to the earth's geographic north pole?

Select one of the following:

North
South
East
West

Explanation

Question 10 of 97

Magnets have two poles, named north and south. Lines of magnetic flux connect these two poles, moving from one to the other and creating what we call a magnetic field. Outside of the magnet, we say that the lines of force move from to .

Select one of the following:

south; north
north; south
south; south
north; north

Explanation

Question 11 of 97

If two magnets are brought near to one another, with the ____________ poles facing each other, then the magnets will be attracted to one another.

Select one of the following:

like
unlike
center
same

Explanation

Question 12 of 97

If two magnets are brought near to one another, with the ____________ poles facing each other, then the magnets will be repelled from one another.

Select one of the following:

like
unlike
center
opposite

Explanation

Question 13 of 97

When a wire is forced to move through a magnetic field, what is created in the wire?

Select one of the following:

electric current
light
aetheric vapors
matter

Explanation

Question 14 of 97

When electricity is forced to flow through a wire, what is created in the space around the wire?

Select one of the following:

light
aetheric vapors
a magnetic field
matter

Explanation

Question 15 of 97

Michael Faraday is considered one of the most important pioneers in the development of electric generators and motors. One of his most significant contributions was the development of sliding electrical contacts which are called ____________.

Select one of the following:

rollers
brushes
sliders
tectonic plates

Explanation

Question 16 of 97

When the number 1200 is written in the form 1.2 x 10^3 it still equals the same quantity; and this new form of notation is referred to as "____________ notation."

Select one of the following:

abbreviated
engineering
short hand
imperial

Explanation

Question 17 of 97

Insert the correct prefix (modifier...single-letter initial) to make this statement true: 1,500,000 V = 1.5 ___V.

Select one of the following:

Explanation

Question 18 of 97

Insert the correct prefix (modifier...single-letter initial) to make this statement true: 0.003 A = 3.0 ___A.

Select one of the following:

Explanation

Question 19 of 97

Insert the correct prefix (modifier...single-letter initial) to make this statement true: 2,200 Ω = 2.2 _____Ω.

Select one of the following:

Explanation

Question 20 of 97

Name the unit we use to describe electrical "power."

Select one of the following:

Coulomb
Steinmetz
Watts
Ohms

Explanation

Question 21 of 97

Name the unit we use to describe electrical "energy."

Select one of the following:

Watt-hour
Watt-second
Amp-hour
Volt-amps

Explanation

Question 22 of 97

Semiconductors have 4 valence electrons in their outer shell. Conductors generally have ________________ 4 valence electrons in their outer shell.

Select one of the following:

more than
fewer than
equal to
none of the above

Explanation

Question 23 of 97

Insulators are graded by their "dielectric strength," measured in volts per mil. This means that a dielectric with a V/mil of 500, and a thickness of 1 mil, can stand up to 500 volts of electrical pressure trying to force electrons to flow through it. The oxidized form of one very common conductor has an extremely high dielectric strength of 20,000 V/mil. This very non-conductive metal oxide is ________________ oxide.

Select one of the following:

silver
copper
aluminum
iron

Explanation

Question 24 of 97

How does the resistance of a wire change as the wire is made longer?

Select one of the following:

Resistance goes up.
Resistance goes down.
It doesn't change at all.
Cannot tell from the information given.

Explanation

Question 25 of 97

One of the most common forms of low-power fixed resistors is comprised of a conductive paste, coating a small ceramic tube, with metal end-caps and leads. This is called the ________________ film resistor.

Select one of the following:

metal
silicon
carbon
aluminum

Explanation

Question 26 of 97

Most variable resistors have 3 leads: one lead from each end of the main resistor element and one lead from the movable conductor, called the wiper. There are 2 standard ways to wire a variable resistor into a circuit. One way involves tying the wiper lead to one of the end-leads. thus turning the variable resistor into a 2-lead component. This style is called a ________________ and it is used primarily for controlling electric current.

Select one of the following:

potentiometer
rheostat
inductor
switch

Explanation

Question 27 of 97

Most variable resistors have 3 leads: one lead from each end of the main resistor element and one lead from the movable conductor, called the wiper. There are 2 standard ways to wire a variable resistor into a circuit. One way leaves it in the circuit as a 3-lead component, used primarily for controlling voltage. This style of variable resistor is called a ________________.

Select one of the following:

potentiometer
rheostat
inductor
switch

Explanation

Question 28 of 97

Name the component represented by this schematic symbol.

Select one of the following:

ground
battery
fuse
resistor

Explanation

Question 29 of 97

Name the component represented by this schematic symbol.

Select one of the following:

ground
battery
fuse
resistor

Explanation

Question 30 of 97

A network of components and conductors arranged and interconnected to allow a controlled flow of electric current from the positive side of a voltage source, through a load, and back to the negative side of the source is called an electric ________________.

Select one of the following:

maze
circuit
web
thread

Explanation

Question 31 of 97

Blue ❌
Yellow ❌
White ❌
Orange ❌
Brown ❌
Violet ❌
Black ❌
Green ❌
Gray ❌
Red ❌

Drag and drop to complete the text.

6 (six)

4 (four)

9 (nine)

3 (three)

1 (one)

7 (seven)

0 (zero)

5 (five)

8 (eight)

2 (two)

Explanation

Question 32 of 97

Ohm's Law is: = x

Select one of the following:

I = R x E
R = E x I
I = E x R
E = I x R

Explanation

Question 33 of 97

Using the series circuit shown, if V = 10V and R = 100Ω, how much current is flowing through the circuit?

Select one of the following:

10.0 A
.001 A
.100 A
100 A

Explanation

Question 34 of 97

Using the series circuit shown, if R = 10Ω and I = 0.1A, what is the value for the supply voltage?

Select one of the following:

1.0V
0.1V
10V
0.01V

Explanation

Question 35 of 97

Using the series circuit shown, if V = 100V and I = 0.1A, what is the total resistance?

Select one of the following:

10Ω
100Ω
1,000Ω
10,000Ω

Explanation

Question 36 of 97

When a meter is placed into a circuit to take measurements, it always draws off some amount of current, be it ever so small. This impact that a meter has on a circuit is referred to as meter _________________.

Select one of the following:

loading
mistake
unloading
parallax

Explanation

Question 37 of 97

In the series circuit shown, which meter is correctly positioned for measuring voltage?

Select one of the following:

Meter 1
Meter 2

Explanation

Question 38 of 97

In the series circuit shown, which meter is correctly installed for measuring current?

Select one of the following:

Meter 1
Meter 2

Explanation

Question 39 of 97

The most used "reference" point when measuring voltages in electrical and electronic circuits is also an electrically "common" point in the circuit that is generally tied to one side of the voltage source. This point is commonly called __________________.

Select one of the following:

source
ground
test
hot

Explanation

Question 40 of 97

20 kΩ equal ___________.

Select one of the following:

2,000Ω
20,000Ω
200,000Ω
2,000,000Ω

Explanation

Question 41 of 97

Energy that is being stored for possible use is technically or scientifically known as ________________ energy.

Select one of the following:

potential
quantum
kinetic
static

Explanation

Question 42 of 97

Energy that is in motion, performing work in the moment is technically or scientifically known as _____________________ energy.

Select one of the following:

quantum
potential
kinetic
static

Explanation

Question 43 of 97

1 Watt = 1 Volt x 1 ___________

Select one of the following:

Hour
Amp
Ohm
Farad

Explanation

Question 44 of 97

In electricity, power may be calculated as Watts = I^2 x _________.

Select one of the following:

Explanation

Question 45 of 97

In a circuit with a source voltage of 120V, the voltage drop across a short circuit equals __________.

Select one of the following:

120V
0V
infinite volts
unknown

Explanation

Question 46 of 97

1 HP = about 750 _____________.

Select one of the following:

Amps
Watts
Ohms
Volts

Explanation

Question 47 of 97

In a circuit with a source voltage of 120V, the voltage drop across an open circuit equals ____________.

Select one of the following:

120V
0V
infinite volts
unknown

Explanation

Question 48 of 97

A series circuit has ______________ path(s) for current to follow.

Select one of the following:

no
one
multiple
variable

Explanation

Question 49 of 97

If current is measured in two different parts of a series circuit, the two measurements will be __________________.

Select one of the following:

the same
proportional to the resistors
slightly different
unknown

Explanation

Question 50 of 97

In a series circuit, consisting of one voltage source and three resistors, the sum of all the voltage drops across the three resistors will be equal to _________________.

Select one of the following:

100 volts
the source voltage
a single resistor's ohms
unknown

Explanation

Question 51 of 97

In a series circuit, consisting of one voltage source and three resistors, if the resistance of one of the resistors is increased the voltage drop across it will ____________________________.

Select one of the following:

also increase
decrease
remain the same
change unpredictably

Explanation

Question 52 of 97

In a series circuit consisting of one voltage source and two resistors, if the values of the resistors are equal we can assume that their voltage drops will be __________________.

Select one of the following:

equal to each other
greater than the total supply voltage
higher across the first resistor
higher across the second resistor

Explanation

Question 53 of 97

How much current is flowing through the series circuit shown?

Select one of the following:

0.5mA
5.0mA
5.0µA
5.0A

Explanation

Question 54 of 97

What is the voltage drop across the 5kΩ resistor in the series circuit shown?

Select one of the following:

12V
25V
2.5V
0.5V

Explanation

Question 55 of 97

What is the voltage of the second battery in the series circuit shown?

Select one of the following:

Explanation

Question 56 of 97

How much current is flowing in the series circuit shown?

Select one of the following:

6A
6mA
6µA
none of these

Explanation

Question 57 of 97

In the series circuit shown, if V = 24V, I = 2.4mA, and R1 = 3.5kΩ what is the value of R2?

Select one of the following:

10kΩ
6.5kΩ
6.5Ω
10Ω

Explanation

Question 58 of 97

In a parallel resistor circuit, the voltage drop is ________________________ across all the resistors in the parallel network.

Select one of the following:

equal
divided proportionally according to the resistor value
unpredictable

Explanation

Question 59 of 97

In a parallel resistor circuit, if all the resistors are of the same value the current is __________________ through each of the resistors.

Select one of the following:

the same
greater through the first branch resistor
greater through the second branch resistor
undeterminable

Explanation

Question 60 of 97

In a parallel resistor circuit, if all the resistors are of different values the branch with the smallest resistor value will have the _________________ current flow.

Select one of the following:

greatest
least
same
uncalculable

Explanation

Question 61 of 97

Total resistance in a parallel circuit is always _______________ the smallest resistor value.

Select one of the following:

greater than
less than
equal to
unrelated to

Explanation

Question 62 of 97

Two 100Ω resistors are connected in parallel. What is their combined resistance?

Select one of the following:

50Ω
75Ω
100Ω
200Ω

Explanation

Question 63 of 97

In the parallel circuit shown, if V=6V, R1=200Ω, and R2=500Ω what is the total resistance?

Select one of the following:

143Ω
200Ω
500Ω
700Ω

Explanation

Question 64 of 97

In the parallel circuit shown, if V=6V, R1=200Ω, and R2=500Ω what is the total current?

Select one of the following:

42mA
4.2µA
0.42A
8.5mA

Explanation

Question 65 of 97

What is the total resistance of this series-parallel circuit?

Select one of the following:

1660Ω
880Ω
460Ω
1000Ω

Explanation

Question 66 of 97

When electric current flows through a coil of wire it transforms the coil into a "temporary" device which is called a(n) ____________________.

Select one of the following:

bipolar rectifier
solenoidal toroid
electromagnet
diode

Explanation

Question 67 of 97

As a wound coil is stretched out longer (like stretching a slinky) the intensity of its magnetic field _________________.

Select one of the following:

increases
decreases
remains the same
cannot be determined without additional information

Explanation

Question 68 of 97

The type of electrical generator which puts out AC is called a(n) ___________________.

Select one of the following:

buck-boost generator
PWM dynamo
alternator
there is no such thing

Explanation

Question 69 of 97

The time required to complete one full alternating sine wave of AC is called the ___________________ of the waveform.

Select one of the following:

frequency
period
amplitude
window

Explanation

Question 70 of 97

The number of complete waveforms that occur in a single second of time is called the _________________ of the waveform.

Select one of the following:

frequency
period
amplitude
window

Explanation

Question 71 of 97

What is the unit we use to describe "cycles per second"?

Select one of the following:

Hurts
Hertz
Henries
Hours

Explanation

Question 72 of 97

A _________________ is a device that combines an electromagnet with one or more sets of switch contacts.

Select one of the following:

contactor
relay
both of these

Explanation

Question 73 of 97

A coil with a moving armature, used to create short-stroke linear motion, is called a _____________________.

Select one of the following:

contactor
solenoid
electromagnet
relay

Explanation

Question 74 of 97

When a relay is not energized, what resistance should you read across the NC (normally-closed) contacts?

Select one of the following:

1000Ω
0Ω
infinite ohms
cannot determine without additional information

Explanation

Question 75 of 97

If the frequency of an AC signal increases, the time of a single wave cycle __________________.

Select one of the following:

increases
decreases
does not change
cannot be determined

Explanation

Question 76 of 97

What is the more informal and physically descriptive name of the electrical component we call the inductor?

Select one of the following:

plug
core
coil
wheel

Explanation

Question 77 of 97

Inductance gives opposition to any change in circuit _________________.

Select one of the following:

resistance
voltage
current
power

Explanation

Question 78 of 97

When an inductor is first being energized with a DC current, the opposition to current changes is in the form of "back __________."

Select one of the following:

track
EMF
resistance
power

Explanation

Question 79 of 97

When an inductor is quickly removed from a power source, a forward voltage comes out of the coil which can be very high. This is commonly called _ voltage.

Select one of the following:

high power
low ohms
kick back
feed back

Explanation

Question 80 of 97

The variable used to designate "inductance" in an equation is the letter __________.

Select one of the following:

Explanation

Question 81 of 97

The primary unit with which we quantify inductance is the _________________.

Select one of the following:

Gauss
Henry
Oersted
Farad

Explanation

Question 82 of 97

As an inductor is stretched out longer (like a slinky) its inductance _______________.

Select one of the following:

increases
decreases
remains the same
cannot be determined from the information given

Explanation

Question 83 of 97

When a permeable core material is added to a hollow inductor, its inductance ______________.

Select one of the following:

increases
decreases
remains the same
cannot be determined from the information provided

Explanation

Question 84 of 97

If we reduce the number of turns of wire in an inductor its inductance _________________.

Select one of the following:

increases
decreases
remains the same
cannot be determined from the given information

Explanation

Question 85 of 97

A transformer has 10 turns in its primary side and 40 turns in its secondary side. If 60VAC is applied to the primary the voltage measured across the secondary will be __________________.

Select one of the following:

30VAC
120VAC
240VAC
480VAC

Explanation

Question 86 of 97

The name of the unit used to describe the quantity of capacitance in a capacitor is the _______________.

Select one of the following:

Henry
Farad
Tesla
Gauss

Explanation

Question 87 of 97

As the common surface area of a capacitor's plates increases, the capacitance ______________.

Select one of the following:

increases
decreases
remains the same
cannot be determined without additional information

Explanation

Question 88 of 97

As the dielectric thickness of capacitors increases, separating the plates further apart, the capacitance ______________.

Select one of the following:

increases
decreases
remains the same
cannot be determined from the information provided

Explanation

Question 89 of 97

Which has a higher dielectric constant?

Select one of the following:

air
ceramic
aluminum
mica

Explanation

Question 90 of 97

Capacitors effectively block _ current but appear to allow __ current to pass through.

Select one of the following:

direct; alternating
alternating; direct
variable; direct
direct; constant

Explanation

Question 91 of 97

CT = C1 + C2 + C3 + ... + Cn is the formula used to calculate total capacitance for capacitors connected in _______________.

Select one of the following:

series
parallel
individually
no circuit configuration

Explanation

Question 92 of 97

For the image shown, what is the peak-to-peak voltage?

Select one of the following:

5V
14V
20V
27.5V

Explanation

Question 93 of 97

In the image shown, what is the peak voltage?

Select one of the following:

5V
14V
20V
27.5V

Explanation

Question 94 of 97

In the image shown, what is the period of the waveform?

Select one of the following:

200µs
600µs
1ms
2ms

Explanation

Question 95 of 97

In the image shown, what is the frequency for the waveform?

Select one of the following:

100Hz
500Hz
1,000Hz
5,000Hz

Explanation

Question 96 of 97

In the image shown, what is the RMS voltage for the sine wave?

Select one of the following:

5V
7.07V
9.75V
14.14V

Explanation

Question 97 of 97

A transformer has a 4 : 1 turns ratio. If the secondary voltage is 10V and secondary power is 40W, what is the primary current?

Select one of the following:

Explanation

Check answer

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	Created by Kris Salmons over 6 years ago

Early College Electrical Technology Quiz on Fundamentals Written Final Prep, created by Kris Salmons on 14/11/2017.

Fundamentals Written Final Prep

Question 1 of 97

The most commonly accepted theory regarding electricity says that an electric current is a flow of ____________________ through a conductor.

Select one of the following:

Explanation

Question 2 of 97

In the realm of electricity - as is also the case in pneumatics and hydraulics - current moves from a location of ____________ pressure to an area of ____________ pressure.

Select one of the following:

Explanation

Question 3 of 97

The name of the unit we use to describe our body weight is the pound. Likewise, the name of the unit we use to describe electrical pressure is the ____________.

Select one of the following:

Explanation

Question 4 of 97

The name of the unit we use to describe electrical current is the ____________.

Select one of the following:

Explanation

Question 5 of 97

The name of the unit we use to describe resistance against the flow of electrical current is the ____________.

Select one of the following:

Explanation

Question 6 of 97

All materials give at least some amount of resistance to the flow of electricity. However, the resistance given by some metals is very small and we say these metals are good ____________.

Select one of the following:

Explanation

Question 7 of 97

There is a mathematical relationship between the voltage, current, and resistance in an electrical circuit. We express this relationship with the equation E = I x R. This relationship is called ____________ Law.

Select one of the following:

Explanation

Question 8 of 97

When a large number of free electrons collect on a piece of non-conductive material, creating an electric field which might attract hair and small bits of paper, we call this an example of ____________ electricity.

Select one of the following:

Explanation

Question 9 of 97

One pole of a small, permanent bar magnet, if it is left free to move, will point toward the north geographic pole of the earth. Which magnetic pole of the small magnet points to the earth's geographic north pole?

Select one of the following:

Explanation

Question 10 of 97

Magnets have two poles, named north and south. Lines of magnetic flux connect these two poles, moving from one to the other and creating what we call a magnetic field. Outside of the magnet, we say that the lines of force move from ____________ to ____________.

Select one of the following:

Explanation

Question 11 of 97

If two magnets are brought near to one another, with the ____________ poles facing each other, then the magnets will be attracted to one another.

Select one of the following:

Explanation

Question 12 of 97

If two magnets are brought near to one another, with the ____________ poles facing each other, then the magnets will be repelled from one another.

Select one of the following:

Explanation

Question 13 of 97

When a wire is forced to move through a magnetic field, what is created in the wire?

Select one of the following:

Explanation

Question 14 of 97

When electricity is forced to flow through a wire, what is created in the space around the wire?

Select one of the following:

Explanation

Question 15 of 97

Michael Faraday is considered one of the most important pioneers in the development of electric generators and motors. One of his most significant contributions was the development of sliding electrical contacts which are called ____________.

Select one of the following:

Explanation

Question 16 of 97

When the number 1200 is written in the form 1.2 x 10^3 it still equals the same quantity; and this new form of notation is referred to as "____________ notation."

Select one of the following:

Explanation

Question 17 of 97

Insert the correct prefix (modifier...single-letter initial) to make this statement true: 1,500,000 V = 1.5 ___V.

Select one of the following:

Explanation

Question 18 of 97

Insert the correct prefix (modifier...single-letter initial) to make this statement true: 0.003 A = 3.0 ___A.

Select one of the following:

Explanation

Question 19 of 97

Insert the correct prefix (modifier...single-letter initial) to make this statement true: 2,200 Ω = 2.2 _____Ω.

Select one of the following:

Explanation

Question 20 of 97

Name the unit we use to describe electrical "power."

In the realm of electricity - as is also the case in pneumatics and hydraulics - current moves from a location of pressure to an area of pressure.

Magnets have two poles, named north and south. Lines of magnetic flux connect these two poles, moving from one to the other and creating what we call a magnetic field. Outside of the magnet, we say that the lines of force move from to .

Blue ❌
Yellow ❌
White ❌
Orange ❌
Brown ❌
Violet ❌
Black ❌
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Gray ❌
Red ❌

Ohm's Law is: = x