ATO - Test 3 ( AC )
AC Advantages - answer- Can be stepped up or stepped down using a transformer
- Can be transmitted at high voltage , low current which reduces power losee
Wave - answerA physical activity that rises and falls periodically
Waveform - answergraphic representation of a sound that occurs over a period of time
AC waveform - answerA plot of a current or voltage which constantly changes in
amplitude and direction
3 things required to produce an AC wave - answer- Magnetic Field
- Conductor
- Relative Motion
Speed of the generator - answerThe speed of the generator is directly proportional to
the speed of the wave
Period - answerThe length of time to complete a cycle
Frequency - answerHow many cycles in 1 second
Frequency measured in - answerMeasured in Hz
Period measured in - answerTime
Period / Frequency - answer- As period increases , frequency decreases
Magnetism - answerAn invisible force that pushes or pulls magnetic materials.
- Classified as Permanent or Temporary
magnetic field - answerThe area of magnetic force around a magnet
Electromagnetism - answerWhen current flows through a conductor , it creates a
magnetic field around the conductor
Field Strength depends on - answer- Number of turns of the conductor in the coil
- Amount of current flow through the coup
- Type of core material
, Left Hand Rule - answerThumb points in direction of current flow
As your Polarity changes - answerSo does your direction of current
Convert AC to DC - answerRMS converts AC to DC
- Vrms = 0.707 x Vpk
- Vavg = 0.637 x Vpk
3 Characteristics Needed For Sine Wave Calculations - answer- Frequency
- Period
- Wavelength
Period Symbol - answerT ( Time )
Harmonics - answer- Fundamental Frequency
- Harmonic Frequency
Ex - 60 Hz
2nd Harmonic is 120 Hz
Subharmonic is division
Sinusoidal and Non - Sinusoidal Waveforms - answer- Non - Sinusoidal Waves result
from harmonic frequencies being allowed to combine with a fundamental and only
harmonics
Triangle vs Sawtooth - answerTriangle - Even rise and fall
Sawtooth - Uneven rise and fall
Is a function generator test equipment - answerA function generator is not test
equipment
Peak vs peak to peak - answerPeak is Half the wave
Peak to peak is the entire wave
Inductance opposes change in what - answerOpposes change in current
Inductor measured in - answerMeasured in Henrys
Electromagnetic induction - answerthe process of creating a current in a circuit by
changing a magnetic field
In an AC circuit that contains only inductance , there are three varying quantities -
answer- Applied Voltage
- Induced EMF
- Circuit Current
AC Advantages - answer- Can be stepped up or stepped down using a transformer
- Can be transmitted at high voltage , low current which reduces power losee
Wave - answerA physical activity that rises and falls periodically
Waveform - answergraphic representation of a sound that occurs over a period of time
AC waveform - answerA plot of a current or voltage which constantly changes in
amplitude and direction
3 things required to produce an AC wave - answer- Magnetic Field
- Conductor
- Relative Motion
Speed of the generator - answerThe speed of the generator is directly proportional to
the speed of the wave
Period - answerThe length of time to complete a cycle
Frequency - answerHow many cycles in 1 second
Frequency measured in - answerMeasured in Hz
Period measured in - answerTime
Period / Frequency - answer- As period increases , frequency decreases
Magnetism - answerAn invisible force that pushes or pulls magnetic materials.
- Classified as Permanent or Temporary
magnetic field - answerThe area of magnetic force around a magnet
Electromagnetism - answerWhen current flows through a conductor , it creates a
magnetic field around the conductor
Field Strength depends on - answer- Number of turns of the conductor in the coil
- Amount of current flow through the coup
- Type of core material
, Left Hand Rule - answerThumb points in direction of current flow
As your Polarity changes - answerSo does your direction of current
Convert AC to DC - answerRMS converts AC to DC
- Vrms = 0.707 x Vpk
- Vavg = 0.637 x Vpk
3 Characteristics Needed For Sine Wave Calculations - answer- Frequency
- Period
- Wavelength
Period Symbol - answerT ( Time )
Harmonics - answer- Fundamental Frequency
- Harmonic Frequency
Ex - 60 Hz
2nd Harmonic is 120 Hz
Subharmonic is division
Sinusoidal and Non - Sinusoidal Waveforms - answer- Non - Sinusoidal Waves result
from harmonic frequencies being allowed to combine with a fundamental and only
harmonics
Triangle vs Sawtooth - answerTriangle - Even rise and fall
Sawtooth - Uneven rise and fall
Is a function generator test equipment - answerA function generator is not test
equipment
Peak vs peak to peak - answerPeak is Half the wave
Peak to peak is the entire wave
Inductance opposes change in what - answerOpposes change in current
Inductor measured in - answerMeasured in Henrys
Electromagnetic induction - answerthe process of creating a current in a circuit by
changing a magnetic field
In an AC circuit that contains only inductance , there are three varying quantities -
answer- Applied Voltage
- Induced EMF
- Circuit Current
