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Module 2 > Worksheet > Flashcards

Worksheet Flashcards

1
Q

An atom is electrically neutral, or ____ when it has an equal number of protons and electrons.

A

Balanced

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2
Q

An atom that gains or loses an electron is called a…?

A

Ion

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3
Q

This type of ion has one more proton than electrons and the atom has a positive charge.

A

Positive Ion

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4
Q

This type of ion has one more electron than protons and the atom has a negative charge.

A

Negative Ion

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5
Q

Materials that permit electrons to flow freely from particle to particle are known as ____.

A

Conductor

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6
Q

Nonconductive materials have very few free electrons and have high resistance to movement or electricity are called ____.

A

Insulator

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7
Q

Materials that are neither good conductors nor good insulators and have electrical characteristics that fall between those conductors and insulators are called ____.

A

Semiconductors

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8
Q

This term describes the force or electrical energy required to move electrons from one place to another.

A

Voltage

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9
Q

This term describes the movement of free electrons through a conductor and is measured in amperes.

A

Current

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10
Q

The ____ is a measure of the amount of electric charge passing a point per unit time and represents the flow of electrons in a conductor.

A

Amperes

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11
Q

The amount of opposition a device or material offers to the movement of electrons is known as ____.

A

Resistance

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12
Q

The term that is defined as the physical property of a circuit that opposes change to current flow.

A

Inductance

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13
Q

What is measured in watts and calculated by multiplying current times voltage?

A

Power

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14
Q

What is the unit of measurement for resistance?

A

Ohm

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15
Q

The unit of measurement for inductance is the _____.

A

henry

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16
Q

The following defines what?

The ability of a dielectric to store an electric charge.

A

Capacitance

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17
Q

The following defines what?

The opposition a device or material offers to the movement of electrons.

A

Resistance

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18
Q

The following defines what?

The tendency of an electrical conductor to oppose a change in the electric current flowing through it.

A

Inductance

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19
Q

The unit of measurement for capacitance is _____.

A

Farad

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20
Q

An atom with a different number of electrons and protons.

A

Ion

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21
Q

Particles that orbit around the nucleus in energy levels.

A

Electrons

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22
Q

The opposite of resistance.

A

Conductance

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23
Q

Movement of free electrons through a conductor.

A

Current

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24
Q

Neutral particle of an atom.

A

Neutron

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25
Q

Element that opposes conduction of electricity.

A

Insulator

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26
Q

Positively charged particle of an atom.

A

Proton

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27
Q

Opposition to the movement of electrons.

A

Resistance

28
Q

Element that allows electrons to flow freely

A

Conductor

29
Q

Rate of doing work

A

Power

30
Q

Matter between conductors and insulators

A

Semiconductor

31
Q

Difference of potential

A

Voltage

32
Q

The center of an atom

A

Nucleus

33
Q

List the four major wave shapes:

A

Sawtooth, rectangular, square and sine

34
Q

The unit of measurement of the number of cycles per second is

A

Hertz (Hz)

35
Q

Peak amplitude of an AC sine wave refers to

A

peak voltage

36
Q

Current which is constantly changing in amplitude and periodically reversing polarity.

A

AC

37
Q

Two sine waves that rise and fall through zero reference at the same time.

A

In-phase

38
Q

Two sine waves that do not pass through the zero reference at the same.

A

Out-of-phase

39
Q

Maximum amplitude of current or voltage

A

Peak-to-peak

40
Q

360 degrees of a sine wave

A

Cycle

41
Q

The stationary magnetic field

A

Stator

42
Q

Coils of wire wrapped around a metal core on a rotating shaft

A

Rotor

43
Q

The effective value of a sine wave of voltage or current will do the same amount of work as…?

A

DC voltage

44
Q

The phase relationship of two sine waves, one at 0 degrees and the other at its peak negative value at the same time, is…?

A

out of phase

45
Q

RF is an abbreviation for…?

A

Radio Frequencies

46
Q

What are the microwave frequencies?

A

1 GHz to 300 GHz

47
Q

The two most common AC power frequencies throughout the world are ___ and ___.

A

50Hz
60Hz

48
Q

What factors affect capacitance?

A
  1. Dielectric constant (k)
  2. Plate Area (A)
  3. Distance between plates (d)
49
Q

What is the formula for capacitance (C)?

A
50
Q

If you increase the size of the capacitor plates the capacitance will…?

A

increase

51
Q

The capacitance of a capacitor is directly proportional to ___ and ___, however inversely proportional to the ____.

A
  1. Dielectric constant (k)
  2. Plate Area (A)
  3. Distance between plates (d)
52
Q

What factors affect inductance?

A
  1. Number of turns in the coil
  2. Core cross sectional area
  3. Length of the coil
  4. Type of core material
53
Q

Inductance will increase when you increase either the number of ___, the cross sectional area of the ____, or the ____ of the core.

A

turns
core
permeability

54
Q

Inductance is ____ proportional to the length of the coil.

A

inversely

55
Q

Define the term resistance

A

The opposition to the flow of current a resistor creates

56
Q

Distance in meters of one cycle

A

wavelength

57
Q

a symmetrical non sinusoidal wave with equal alternations

A

square

58
Q

moveable coil in a generator

A

rotor

59
Q

frequency range from 3KHz-300Gz

A

radio

60
Q

The amount of AC voltage that will do the same amount of work as a DC voltage

A

RMS

61
Q

Frequency range from 15-20KHz

A

audio

62
Q

Also known as ramp voltage

A

sawtooth

63
Q

frequencies include infrared, visible and ultraviolet

A

optics

64
Q

when two sine waves of the same frequency pass through zero and reach their positive peaks at the same time, they are…?

A

in phase

65
Q

distance from zero to highest or lowest point on a sine wave

A

peak

66
Q

frequency range extends from 10^23HZ

A

x-ray

Module 2 (3 decks)

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