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Fundamentals Written Final Prep

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Early College Electrical Technology Quiz on Fundamentals Written Final Prep, created by Kris Salmons on 14/11/2017.
Kris Salmons
Quiz by Kris Salmons, updated more than 1 year ago
Kris Salmons
Created by Kris Salmons about 7 years ago
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Resource summary

Question 1

Question
The most commonly accepted theory regarding electricity says that an electric current is a flow of ____________________ through a conductor.
Answer
  • Primordial aether
  • Neutrinos
  • Electrons
  • Protons

Question 2

Question
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.
Answer
  • low; high
  • high; low
  • negative; positive
  • equivalent; high

Question 3

Question
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 ____________.
Answer
  • amp
  • volt
  • ohm
  • watt

Question 4

Question
The name of the unit we use to describe electrical current is the ____________.
Answer
  • amp
  • volt
  • ohm
  • watt

Question 5

Question
The name of the unit we use to describe resistance against the flow of electrical current is the ____________.
Answer
  • amp
  • volt
  • ohm
  • watt

Question 6

Question
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 ____________.
Answer
  • insulators
  • semiconductors
  • conductors
  • heaters

Question 7

Question
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.
Answer
  • Lenz's
  • Ohm's
  • Tesla's
  • Watt's

Question 8

Question
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.
Answer
  • static
  • current
  • neutral
  • kinetic

Question 9

Question
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?
Answer
  • North
  • South
  • East
  • West

Question 10

Question
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 ____________.
Answer
  • south; north
  • north; south
  • south; south
  • north; north

Question 11

Question
If two magnets are brought near to one another, with the ____________ poles facing each other, then the magnets will be attracted to one another.
Answer
  • like
  • unlike
  • center
  • same

Question 12

Question
If two magnets are brought near to one another, with the ____________ poles facing each other, then the magnets will be repelled from one another.
Answer
  • like
  • unlike
  • center
  • opposite

Question 13

Question
When a wire is forced to move through a magnetic field, what is created in the wire?
Answer
  • electric current
  • light
  • aetheric vapors
  • matter

Question 14

Question
When electricity is forced to flow through a wire, what is created in the space around the wire?
Answer
  • light
  • aetheric vapors
  • a magnetic field
  • matter

Question 15

Question
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 ____________.
Answer
  • rollers
  • brushes
  • sliders
  • tectonic plates

Question 16

Question
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."
Answer
  • abbreviated
  • engineering
  • short hand
  • imperial

Question 17

Question
Insert the correct prefix (modifier...single-letter initial) to make this statement true: 1,500,000 V = 1.5 ___V.
Answer
  • m
  • k
  • M
  • G

Question 18

Question
Insert the correct prefix (modifier...single-letter initial) to make this statement true: 0.003 A = 3.0 ___A.
Answer
  • m
  • k
  • M
  • G

Question 19

Question
Insert the correct prefix (modifier...single-letter initial) to make this statement true: 2,200 Ω = 2.2 _____Ω.
Answer
  • m
  • k
  • M
  • G

Question 20

Question
Name the unit we use to describe electrical "power."
Answer
  • Coulomb
  • Steinmetz
  • Watts
  • Ohms

Question 21

Question
Name the unit we use to describe electrical "energy."
Answer
  • Watt-hour
  • Watt-second
  • Amp-hour
  • Volt-amps

Question 22

Question
Semiconductors have 4 valence electrons in their outer shell. Conductors generally have ________________ 4 valence electrons in their outer shell.
Answer
  • more than
  • fewer than
  • equal to
  • none of the above

Question 23

Question
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.
Answer
  • silver
  • copper
  • aluminum
  • iron

Question 24

Question
How does the resistance of a wire change as the wire is made longer?
Answer
  • Resistance goes up.
  • Resistance goes down.
  • It doesn't change at all.
  • Cannot tell from the information given.

Question 25

Question
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.
Answer
  • metal
  • silicon
  • carbon
  • aluminum

Question 26

Question
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.
Answer
  • potentiometer
  • rheostat
  • inductor
  • switch

Question 27

Question
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 ________________.
Answer
  • potentiometer
  • rheostat
  • inductor
  • switch

Question 28

Question
Name the component represented by this schematic symbol.
Image:
Battery (binary/octet-stream)
Answer
  • ground
  • battery
  • fuse
  • resistor

Question 29

Question
Name the component represented by this schematic symbol.
Image:
Resistor (binary/octet-stream)
Answer
  • ground
  • battery
  • fuse
  • resistor

Question 30

Question
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 ________________.
Answer
  • maze
  • circuit
  • web
  • thread

Question 31

Question
Blue [blank_start]________________[blank_end] Yellow [blank_start]________________[blank_end] White [blank_start]________________[blank_end] Orange [blank_start]________________[blank_end] Brown [blank_start]________________[blank_end] Violet [blank_start]________________[blank_end] Black [blank_start]________________[blank_end] Green [blank_start]________________[blank_end] Gray [blank_start]________________[blank_end] Red [blank_start]________________[blank_end]
Answer
  • 6 (six)
  • 4 (four)
  • 9 (nine)
  • 3 (three)
  • 1 (one)
  • 7 (seven)
  • 0 (zero)
  • 5 (five)
  • 8 (eight)
  • 2 (two)

Question 32

Question
Ohm's Law is: ________________ = ________________ x ________________
Answer
  • I = R x E
  • R = E x I
  • I = E x R
  • E = I x R

Question 33

Question
Using the series circuit shown, if V = 10V and R = 100Ω, how much current is flowing through the circuit?
Image:
Simple Dc (binary/octet-stream)
Answer
  • 10.0 A
  • .001 A
  • .100 A
  • 100 A

Question 34

Question
Using the series circuit shown, if R = 10Ω and I = 0.1A, what is the value for the supply voltage?
Image:
Simple Dc (binary/octet-stream)
Answer
  • 1.0V
  • 0.1V
  • 10V
  • 0.01V

Question 35

Question
Using the series circuit shown, if V = 100V and I = 0.1A, what is the total resistance?
Image:
Simple Dc (binary/octet-stream)
Answer
  • 10Ω
  • 100Ω
  • 1,000Ω
  • 10,000Ω

Question 36

Question
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 _________________.
Answer
  • loading
  • mistake
  • unloading
  • parallax

Question 37

Question
In the series circuit shown, which meter is correctly positioned for measuring voltage?
Image:
Q38 39 (binary/octet-stream)
Answer
  • Meter 1
  • Meter 2

Question 38

Question
In the series circuit shown, which meter is correctly installed for measuring current?
Image:
Q38 39 (binary/octet-stream)
Answer
  • Meter 1
  • Meter 2

Question 39

Question
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 __________________.
Answer
  • source
  • ground
  • test
  • hot

Question 40

Question
20 kΩ equal ___________.
Answer
  • 2,000Ω
  • 20,000Ω
  • 200,000Ω
  • 2,000,000Ω

Question 41

Question
Energy that is being stored for possible use is technically or scientifically known as ________________ energy.
Answer
  • potential
  • quantum
  • kinetic
  • static

Question 42

Question
Energy that is in motion, performing work in the moment is technically or scientifically known as _____________________ energy.
Answer
  • quantum
  • potential
  • kinetic
  • static

Question 43

Question
1 Watt = 1 Volt x 1 ___________
Answer
  • Hour
  • Amp
  • Ohm
  • Farad

Question 44

Question
In electricity, power may be calculated as Watts = I^2 x _________.
Answer
  • V
  • R
  • P
  • A

Question 45

Question
In a circuit with a source voltage of 120V, the voltage drop across a short circuit equals __________.
Answer
  • 120V
  • 0V
  • infinite volts
  • unknown

Question 46

Question
1 HP = about 750 _____________.
Answer
  • Amps
  • Watts
  • Ohms
  • Volts

Question 47

Question
In a circuit with a source voltage of 120V, the voltage drop across an open circuit equals ____________.
Answer
  • 120V
  • 0V
  • infinite volts
  • unknown

Question 48

Question
A series circuit has ______________ path(s) for current to follow.
Answer
  • no
  • one
  • multiple
  • variable

Question 49

Question
If current is measured in two different parts of a series circuit, the two measurements will be __________________.
Answer
  • the same
  • proportional to the resistors
  • slightly different
  • unknown

Question 50

Question
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 _________________.
Answer
  • 100 volts
  • the source voltage
  • a single resistor's ohms
  • unknown

Question 51

Question
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 ____________________________.
Answer
  • also increase
  • decrease
  • remain the same
  • change unpredictably

Question 52

Question
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 __________________.
Answer
  • equal to each other
  • greater than the total supply voltage
  • higher across the first resistor
  • higher across the second resistor

Question 53

Question
How much current is flowing through the series circuit shown?
Image:
Series Dc (binary/octet-stream)
Answer
  • 0.5mA
  • 5.0mA
  • 5.0µA
  • 5.0A

Question 54

Question
What is the voltage drop across the 5kΩ resistor in the series circuit shown?
Image:
Series Dc (binary/octet-stream)
Answer
  • 12V
  • 25V
  • 2.5V
  • 0.5V

Question 55

Question
What is the voltage of the second battery in the series circuit shown?
Image:
Q58 59 (binary/octet-stream)
Answer
  • 12V
  • 20V
  • 24V
  • 36V

Question 56

Question
How much current is flowing in the series circuit shown?
Image:
Q58 59 (binary/octet-stream)
Answer
  • 6A
  • 6mA
  • 6µA
  • none of these

Question 57

Question
In the series circuit shown, if V = 24V, I = 2.4mA, and R1 = 3.5kΩ what is the value of R2?
Image:
Dc Series (binary/octet-stream)
Answer
  • 10kΩ
  • 6.5kΩ
  • 6.5Ω
  • 10Ω

Question 58

Question
In a parallel resistor circuit, the voltage drop is ________________________ across all the resistors in the parallel network.
Answer
  • equal
  • divided proportionally according to the resistor value
  • unpredictable

Question 59

Question
In a parallel resistor circuit, if all the resistors are of the same value the current is __________________ through each of the resistors.
Answer
  • the same
  • greater through the first branch resistor
  • greater through the second branch resistor
  • undeterminable

Question 60

Question
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.
Answer
  • greatest
  • least
  • same
  • uncalculable

Question 61

Question
Total resistance in a parallel circuit is always _______________ the smallest resistor value.
Answer
  • greater than
  • less than
  • equal to
  • unrelated to

Question 62

Question
Two 100Ω resistors are connected in parallel. What is their combined resistance?
Answer
  • 50Ω
  • 75Ω
  • 100Ω
  • 200Ω

Question 63

Question
In the parallel circuit shown, if V=6V, R1=200Ω, and R2=500Ω what is the total resistance?
Image:
Parallel Dc (binary/octet-stream)
Answer
  • 143Ω
  • 200Ω
  • 500Ω
  • 700Ω

Question 64

Question
In the parallel circuit shown, if V=6V, R1=200Ω, and R2=500Ω what is the total current?
Image:
Parallel Dc (binary/octet-stream)
Answer
  • 42mA
  • 4.2µA
  • 0.42A
  • 8.5mA

Question 65

Question
What is the total resistance of this series-parallel circuit?
Image:
Series Parallel Dc (binary/octet-stream)
Answer
  • 1660Ω
  • 880Ω
  • 460Ω
  • 1000Ω

Question 66

Question
When electric current flows through a coil of wire it transforms the coil into a "temporary" device which is called a(n) ____________________.
Answer
  • bipolar rectifier
  • solenoidal toroid
  • electromagnet
  • diode

Question 67

Question
As a wound coil is stretched out longer (like stretching a slinky) the intensity of its magnetic field _________________.
Answer
  • increases
  • decreases
  • remains the same
  • cannot be determined without additional information

Question 68

Question
The type of electrical generator which puts out AC is called a(n) ___________________.
Answer
  • buck-boost generator
  • PWM dynamo
  • alternator
  • there is no such thing

Question 69

Question
The time required to complete one full alternating sine wave of AC is called the ___________________ of the waveform.
Answer
  • frequency
  • period
  • amplitude
  • window

Question 70

Question
The number of complete waveforms that occur in a single second of time is called the _________________ of the waveform.
Answer
  • frequency
  • period
  • amplitude
  • window

Question 71

Question
What is the unit we use to describe "cycles per second"?
Answer
  • Hurts
  • Hertz
  • Henries
  • Hours

Question 72

Question
A _________________ is a device that combines an electromagnet with one or more sets of switch contacts.
Answer
  • contactor
  • relay
  • both of these

Question 73

Question
A coil with a moving armature, used to create short-stroke linear motion, is called a _____________________.
Answer
  • contactor
  • solenoid
  • electromagnet
  • relay

Question 74

Question
When a relay is not energized, what resistance should you read across the NC (normally-closed) contacts?
Answer
  • 1000Ω
  • 0Ω
  • infinite ohms
  • cannot determine without additional information

Question 75

Question
If the frequency of an AC signal increases, the time of a single wave cycle __________________.
Answer
  • increases
  • decreases
  • does not change
  • cannot be determined

Question 76

Question
What is the more informal and physically descriptive name of the electrical component we call the inductor?
Answer
  • plug
  • core
  • coil
  • wheel

Question 77

Question
Inductance gives opposition to any change in circuit _________________.
Answer
  • resistance
  • voltage
  • current
  • power

Question 78

Question
When an inductor is first being energized with a DC current, the opposition to current changes is in the form of "back __________."
Answer
  • track
  • EMF
  • resistance
  • power

Question 79

Question
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.
Answer
  • high power
  • low ohms
  • kick back
  • feed back

Question 80

Question
The variable used to designate "inductance" in an equation is the letter __________.
Answer
  • B
  • K
  • L
  • C

Question 81

Question
The primary unit with which we quantify inductance is the _________________.
Answer
  • Gauss
  • Henry
  • Oersted
  • Farad

Question 82

Question
As an inductor is stretched out longer (like a slinky) its inductance _______________.
Answer
  • increases
  • decreases
  • remains the same
  • cannot be determined from the information given

Question 83

Question
When a permeable core material is added to a hollow inductor, its inductance ______________.
Answer
  • increases
  • decreases
  • remains the same
  • cannot be determined from the information provided

Question 84

Question
If we reduce the number of turns of wire in an inductor its inductance _________________.
Answer
  • increases
  • decreases
  • remains the same
  • cannot be determined from the given information

Question 85

Question
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 __________________.
Answer
  • 30VAC
  • 120VAC
  • 240VAC
  • 480VAC

Question 86

Question
The name of the unit used to describe the quantity of capacitance in a capacitor is the _______________.
Answer
  • Henry
  • Farad
  • Tesla
  • Gauss

Question 87

Question
As the common surface area of a capacitor's plates increases, the capacitance ______________.
Answer
  • increases
  • decreases
  • remains the same
  • cannot be determined without additional information

Question 88

Question
As the dielectric thickness of capacitors increases, separating the plates further apart, the capacitance ______________.
Answer
  • increases
  • decreases
  • remains the same
  • cannot be determined from the information provided

Question 89

Question
Which has a higher dielectric constant?
Answer
  • air
  • ceramic
  • aluminum
  • mica

Question 90

Question
Capacitors effectively block _______________ current but appear to allow ________________ current to pass through.
Answer
  • direct; alternating
  • alternating; direct
  • variable; direct
  • direct; constant

Question 91

Question
CT = C1 + C2 + C3 + ... + Cn is the formula used to calculate total capacitance for capacitors connected in _______________.
Answer
  • series
  • parallel
  • individually
  • no circuit configuration

Question 92

Question
For the image shown, what is the peak-to-peak voltage?
Image:
Oscilloscope (binary/octet-stream)
Answer
  • 5V
  • 14V
  • 20V
  • 27.5V

Question 93

Question
In the image shown, what is the peak voltage?
Image:
Oscilloscope (binary/octet-stream)
Answer
  • 5V
  • 14V
  • 20V
  • 27.5V

Question 94

Question
In the image shown, what is the period of the waveform?
Image:
Oscilloscope (binary/octet-stream)
Answer
  • 200µs
  • 600µs
  • 1ms
  • 2ms

Question 95

Question
In the image shown, what is the frequency for the waveform?
Image:
Oscilloscope (binary/octet-stream)
Answer
  • 100Hz
  • 500Hz
  • 1,000Hz
  • 5,000Hz

Question 96

Question
In the image shown, what is the RMS voltage for the sine wave?
Image:
Oscilloscope (binary/octet-stream)
Answer
  • 5V
  • 7.07V
  • 9.75V
  • 14.14V

Question 97

Question
A transformer has a 4 : 1 turns ratio. If the secondary voltage is 10V and secondary power is 40W, what is the primary current?
Answer
  • 1mA
  • 1A
  • 4A
  • 8A
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