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Alternating Current Basics Flashcards | StudBud
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Alternating Current Basics
Alternating Current Basics
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1
Maximum instantaneous value is another term for
Effective value
RMS value
Peak-to-peak value
Peak value
2
The length of time required to complete a cycle is know as
Hertz
Wavelength
Period
Frequency
3
RMS value is another term for
Average value
Peak value
Effective value
Maximum instantaneous value
4
In the illustration the value at letter A represents…
Effective value
Average value
Peak value
Peak-to-peak value
5
Frequency of a event indicates…
how fast the event occurs
how often the event occurs
when the event occurs
where the event occurs
6
(Select all that apply) When a conductor is passed through a magnetic field what determines the direction of EMF?
Polarity of the magnetic field
Speed of movement
Strength of magnetic field
Direction of movement
7
The distance from the beginning to end of a wave cycle is known as the
Hertz
Wavelength
Frequency
Period
8
In the illustration the value at letter D represents…
Peak-to-peak value
Peak value
Average value
Effective value
9
In the illustration the value at letter C represents…
Peak value
Peak-to-peak value
Average value
Effective value
10
1 Hertz is defined as
One frequency per unit
One Coulomb per second
One meter per second
One cycle per second
11
The direction of current induced by a flux field is such that the field created by the current opposes the initial field
Ohm's Law
Lenz's Law
Kirchhoff's Voltage Law
Faraday's Law
12
In the illustration the value at letter B represents…
Average value
Peak-to-peak value
Peak value
Effective value
13
Frequency and wavelength…
have no relationship
have an inverse relationship
have a direct relationship
are two terms for the same concept
14
In electricity, the unit of measurement of frequency is
Meters
Henries
Hertz
Seconds
15
What law states that when an electromagnetic field cuts across a conductor, an EMF is produced?
Lenz's Law
Faraday's Law
Kirchhoff's Voltage Law
Ohm's Law
16
What are two advantages of AC as compared to DC?
Components can be smaller and lighter
Transmission distance
Compatibility with batteries
Inherently safer
17
2.5 MHz is equal to
2,500,000 Hz
250,000 Hz
25,000,000 Hz
25,000 Hz
18
When comparing a value of DC to the same Effective value of AC, they both produce the same
Heat
Frequency
Counter EMF
Magnetic field
19
In California you can't legally buy a mousetrap without having...
HAZMAT handling license
Business license
Hunting license
Weapon permit
20
(Select all that apply) When a conductor is passed through a magnetic field what determines the magnitude of EMF?
Length of wire / number of turns
Strength of magnetic field
Direction of movement
Speed of movement
