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Fundamentals Written Final Prep

Kris Salmons 97 perguntas 2.676 visualizações Atualizado em 4 mai 2021

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1The most commonly accepted theory regarding electricity says that an electric current is a flow of ____________________ through a conductor.
1. APrimordial aether
2. BNeutrinos
3. CElectrons
4. DProtons
2In 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.
1. Alow; high
2. Bhigh; low
3. Cnegative; positive
4. Dequivalent; high
3The 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 ____________.
1. Aamp
2. Bvolt
3. Cohm
4. Dwatt
4The name of the unit we use to describe electrical current is the ____________.
1. Aamp
2. Bvolt
3. Cohm
4. Dwatt
5The name of the unit we use to describe resistance against the flow of electrical current is the ____________.
1. Aamp
2. Bvolt
3. Cohm
4. Dwatt
6All 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 ____________.
1. Ainsulators
2. Bsemiconductors
3. Cconductors
4. Dheaters
7There 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.
1. ALenz's
2. BOhm's
3. CTesla's
4. DWatt's
8When 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.
1. Astatic
2. Bcurrent
3. Cneutral
4. Dkinetic
9One 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?
1. ANorth
2. BSouth
3. CEast
4. DWest
10Magnets 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 ____________.
1. Asouth; north
2. Bnorth; south
3. Csouth; south
4. Dnorth; north

11If two magnets are brought near to one another, with the ____________ poles facing each other, then the magnets will be attracted to one another.
1. Alike
2. Bunlike
3. Ccenter
4. Dsame
12If two magnets are brought near to one another, with the ____________ poles facing each other, then the magnets will be repelled from one another.
1. Alike
2. Bunlike
3. Ccenter
4. Dopposite
13When a wire is forced to move through a magnetic field, what is created in the wire?
1. Aelectric current
2. Blight
3. Caetheric vapors
4. Dmatter
14When electricity is forced to flow through a wire, what is created in the space around the wire?
1. Alight
2. Baetheric vapors
3. Ca magnetic field
4. Dmatter
15Michael 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 ____________.
1. Arollers
2. Bbrushes
3. Csliders
4. Dtectonic plates
16When 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."
1. Aabbreviated
2. Bengineering
3. Cshort hand
4. Dimperial
17Insert the correct prefix (modifier...single-letter initial) to make this statement true: 1,500,000 V = 1.5 ___V.
1. Am
2. Bk
3. CM
4. DG
18Insert the correct prefix (modifier...single-letter initial) to make this statement true: 0.003 A = 3.0 ___A.
1. Am
2. Bk
3. CM
4. DG
19Insert the correct prefix (modifier...single-letter initial) to make this statement true: 2,200 Ω = 2.2 _____Ω.
1. Am
2. Bk
3. CM
4. DG
20Name the unit we use to describe electrical "power."
1. ACoulomb
2. BSteinmetz
3. CWatts
4. DOhms
21Name the unit we use to describe electrical "energy."
1. AWatt-hour
2. BWatt-second
3. CAmp-hour
4. DVolt-amps
22Semiconductors have 4 valence electrons in their outer shell. Conductors generally have ________________ 4 valence electrons in their outer shell.
1. Amore than
2. Bfewer than
3. Cequal to
4. Dnone of the above
23Insulators 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.
1. Asilver
2. Bcopper
3. Caluminum
4. Diron
24How does the resistance of a wire change as the wire is made longer?
1. AResistance goes up.
2. BResistance goes down.
3. CIt doesn't change at all.
4. DCannot tell from the information given.
25One 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.
1. Ametal
2. Bsilicon
3. Ccarbon
4. Daluminum
26Most 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.
1. Apotentiometer
2. Brheostat
3. Cinductor
4. Dswitch
27Most 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 ________________.
1. Apotentiometer
2. Brheostat
3. Cinductor
4. Dswitch
28Name the component represented by this schematic symbol.
1. Aground
2. Bbattery
3. Cfuse
4. Dresistor
29Name the component represented by this schematic symbol.
1. Aground
2. Bbattery
3. Cfuse
4. Dresistor
30A 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 ________________.
1. Amaze
2. Bcircuit
3. Cweb
4. Dthread
31Blue [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]
1. A6 (six)
2. B4 (four)
3. C9 (nine)
4. D3 (three)
5. E1 (one)
6. F7 (seven)
7. G0 (zero)
8. H5 (five)
9. I8 (eight)
10. J2 (two)
32Ohm's Law is: ________________ = ________________ x ________________
1. AI = R x E
2. BR = E x I
3. CI = E x R
4. DE = I x R
33Using the series circuit shown, if V = 10V and R = 100Ω, how much current is flowing through the circuit?
1. A10.0 A
2. B.001 A
3. C.100 A
4. D100 A
34Using the series circuit shown, if R = 10Ω and I = 0.1A, what is the value for the supply voltage?
1. A1.0V
2. B0.1V
3. C10V
4. D0.01V
35Using the series circuit shown, if V = 100V and I = 0.1A, what is the total resistance?
1. A10Ω
2. B100Ω
3. C1,000Ω
4. D10,000Ω
36When 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 _________________.
1. Aloading
2. Bmistake
3. Cunloading
4. Dparallax
37In the series circuit shown, which meter is correctly positioned for measuring voltage?
1. AMeter 1
2. BMeter 2
38In the series circuit shown, which meter is correctly installed for measuring current?
1. AMeter 1
2. BMeter 2
39The 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 __________________.
1. Asource
2. Bground
3. Ctest
4. Dhot
4020 kΩ equal ___________.
1. A2,000Ω
2. B20,000Ω
3. C200,000Ω
4. D2,000,000Ω
41Energy that is being stored for possible use is technically or scientifically known as ________________ energy.
1. Apotential
2. Bquantum
3. Ckinetic
4. Dstatic
42Energy that is in motion, performing work in the moment is technically or scientifically known as _____________________ energy.
1. Aquantum
2. Bpotential
3. Ckinetic
4. Dstatic
431 Watt = 1 Volt x 1 ___________
1. AHour
2. BAmp
3. COhm
4. DFarad
44In electricity, power may be calculated as Watts = I^2 x _________.
1. AV
2. BR
3. CP
4. DA
45In a circuit with a source voltage of 120V, the voltage drop across a short circuit equals __________.
1. A120V
2. B0V
3. Cinfinite volts
4. Dunknown
461 HP = about 750 _____________.
1. AAmps
2. BWatts
3. COhms
4. DVolts
47In a circuit with a source voltage of 120V, the voltage drop across an open circuit equals ____________.
1. A120V
2. B0V
3. Cinfinite volts
4. Dunknown
48A series circuit has ______________ path(s) for current to follow.
1. Ano
2. Bone
3. Cmultiple
4. Dvariable
49If current is measured in two different parts of a series circuit, the two measurements will be __________________.
1. Athe same
2. Bproportional to the resistors
3. Cslightly different
4. Dunknown
50In 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 _________________.
1. A100 volts
2. Bthe source voltage
3. Ca single resistor's ohms
4. Dunknown
51In 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 ____________________________.
1. Aalso increase
2. Bdecrease
3. Cremain the same
4. Dchange unpredictably
52In 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 __________________.
1. Aequal to each other
2. Bgreater than the total supply voltage
3. Chigher across the first resistor
4. Dhigher across the second resistor
53How much current is flowing through the series circuit shown?
1. A0.5mA
2. B5.0mA
3. C5.0µA
4. D5.0A
54What is the voltage drop across the 5kΩ resistor in the series circuit shown?
1. A12V
2. B25V
3. C2.5V
4. D0.5V
55What is the voltage of the second battery in the series circuit shown?
1. A12V
2. B20V
3. C24V
4. D36V
56How much current is flowing in the series circuit shown?
1. A6A
2. B6mA
3. C6µA
4. Dnone of these
57In the series circuit shown, if V = 24V, I = 2.4mA, and R1 = 3.5kΩ what is the value of R2?
1. A10kΩ
2. B6.5kΩ
3. C6.5Ω
4. D10Ω
58In a parallel resistor circuit, the voltage drop is ________________________ across all the resistors in the parallel network.
1. Aequal
2. Bdivided proportionally according to the resistor value
3. Cunpredictable
59In a parallel resistor circuit, if all the resistors are of the same value the current is __________________ through each of the resistors.
1. Athe same
2. Bgreater through the first branch resistor
3. Cgreater through the second branch resistor
4. Dundeterminable
60In a parallel resistor circuit, if all the resistors are of different values the branch with the smallest resistor value will have the _________________ current flow.
1. Agreatest
2. Bleast
3. Csame
4. Duncalculable
61Total resistance in a parallel circuit is always _______________ the smallest resistor value.
1. Agreater than
2. Bless than
3. Cequal to
4. Dunrelated to
62Two 100Ω resistors are connected in parallel. What is their combined resistance?
1. A50Ω
2. B75Ω
3. C100Ω
4. D200Ω
63In the parallel circuit shown, if V=6V, R1=200Ω, and R2=500Ω what is the total resistance?
1. A143Ω
2. B200Ω
3. C500Ω
4. D700Ω
64In the parallel circuit shown, if V=6V, R1=200Ω, and R2=500Ω what is the total current?
1. A42mA
2. B4.2µA
3. C0.42A
4. D8.5mA
65What is the total resistance of this series-parallel circuit?
1. A1660Ω
2. B880Ω
3. C460Ω
4. D1000Ω
66When electric current flows through a coil of wire it transforms the coil into a "temporary" device which is called a(n) ____________________.
1. Abipolar rectifier
2. Bsolenoidal toroid
3. Celectromagnet
4. Ddiode
67As a wound coil is stretched out longer (like stretching a slinky) the intensity of its magnetic field _________________.
1. Aincreases
2. Bdecreases
3. Cremains the same
4. Dcannot be determined without additional information
68The type of electrical generator which puts out AC is called a(n) ___________________.
1. Abuck-boost generator
2. BPWM dynamo
3. Calternator
4. Dthere is no such thing
69The time required to complete one full alternating sine wave of AC is called the ___________________ of the waveform.
1. Afrequency
2. Bperiod
3. Camplitude
4. Dwindow
70The number of complete waveforms that occur in a single second of time is called the _________________ of the waveform.
1. Afrequency
2. Bperiod
3. Camplitude
4. Dwindow
71What is the unit we use to describe "cycles per second"?
1. AHurts
2. BHertz
3. CHenries
4. DHours
72A _________________ is a device that combines an electromagnet with one or more sets of switch contacts.
1. Acontactor
2. Brelay
3. Cboth of these
73A coil with a moving armature, used to create short-stroke linear motion, is called a _____________________.
1. Acontactor
2. Bsolenoid
3. Celectromagnet
4. Drelay
74When a relay is not energized, what resistance should you read across the NC (normally-closed) contacts?
1. A1000Ω
2. B0Ω
3. Cinfinite ohms
4. Dcannot determine without additional information
75If the frequency of an AC signal increases, the time of a single wave cycle __________________.
1. Aincreases
2. Bdecreases
3. Cdoes not change
4. Dcannot be determined
76What is the more informal and physically descriptive name of the electrical component we call the inductor?
1. Aplug
2. Bcore
3. Ccoil
4. Dwheel
77Inductance gives opposition to any change in circuit _________________.
1. Aresistance
2. Bvoltage
3. Ccurrent
4. Dpower
78When an inductor is first being energized with a DC current, the opposition to current changes is in the form of "back __________."
1. Atrack
2. BEMF
3. Cresistance
4. Dpower
79When 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.
1. Ahigh power
2. Blow ohms
3. Ckick back
4. Dfeed back
80The variable used to designate "inductance" in an equation is the letter __________.
1. AB
2. BK
3. CL
4. DC
81The primary unit with which we quantify inductance is the _________________.
1. AGauss
2. BHenry
3. COersted
4. DFarad
82As an inductor is stretched out longer (like a slinky) its inductance _______________.
1. Aincreases
2. Bdecreases
3. Cremains the same
4. Dcannot be determined from the information given
83When a permeable core material is added to a hollow inductor, its inductance ______________.
1. Aincreases
2. Bdecreases
3. Cremains the same
4. Dcannot be determined from the information provided
84If we reduce the number of turns of wire in an inductor its inductance _________________.
1. Aincreases
2. Bdecreases
3. Cremains the same
4. Dcannot be determined from the given information
85A 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 __________________.
1. A30VAC
2. B120VAC
3. C240VAC
4. D480VAC
86The name of the unit used to describe the quantity of capacitance in a capacitor is the _______________.
1. AHenry
2. BFarad
3. CTesla
4. DGauss
87As the common surface area of a capacitor's plates increases, the capacitance ______________.
1. Aincreases
2. Bdecreases
3. Cremains the same
4. Dcannot be determined without additional information
88As the dielectric thickness of capacitors increases, separating the plates further apart, the capacitance ______________.
1. Aincreases
2. Bdecreases
3. Cremains the same
4. Dcannot be determined from the information provided
89Which has a higher dielectric constant?
1. Aair
2. Bceramic
3. Caluminum
4. Dmica
90Capacitors effectively block _______________ current but appear to allow ________________ current to pass through.
1. Adirect; alternating
2. Balternating; direct
3. Cvariable; direct
4. Ddirect; constant
91CT = C1 + C2 + C3 + ... + Cn is the formula used to calculate total capacitance for capacitors connected in _______________.
1. Aseries
2. Bparallel
3. Cindividually
4. Dno circuit configuration
92For the image shown, what is the peak-to-peak voltage?
1. A5V
2. B14V
3. C20V
4. D27.5V
93In the image shown, what is the peak voltage?
1. A5V
2. B14V
3. C20V
4. D27.5V
94In the image shown, what is the period of the waveform?
1. A200µs
2. B600µs
3. C1ms
4. D2ms
95In the image shown, what is the frequency for the waveform?
1. A100Hz
2. B500Hz
3. C1,000Hz
4. D5,000Hz
96In the image shown, what is the RMS voltage for the sine wave?
1. A5V
2. B7.07V
3. C9.75V
4. D14.14V
97A transformer has a 4 : 1 turns ratio. If the secondary voltage is 10V and secondary power is 40W, what is the primary current?
1. A1mA
2. B1A
3. C4A
4. D8A

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Descrição: Early College Electrical Technology Quiz sobre Fundamentals Written Final Prep, criado por Kris Salmons em 14-11-2017.
Autor: Kris Salmons
Idioma: English
Visualizações: 2.676
Histórico: Criado em 14 nov 2017 · atualizado em 4 mai 2021
Etiquetas: electrical technology early college
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Fundamentals Written Final Prep

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