ATO - Test 3 ( AC )
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 - ANSWER-Triangle - Even rise and fall Sawtooth - Uneven rise and fall
Is a function generator test equipment - ANSWER-A function generator is not test equipment
- things required to produce an AC wave - ANSWER-- Magnetic Field
- Conductor
- Relative Motion
Speed of the generator - ANSWER-The speed of the generator is directly proportional to the speed of the wave
Period - ANSWER-The length of time to complete a cycle
Frequency - ANSWER-How many cycles in 1 second
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 - ANSWER-A physical activity that rises and falls periodically
Waveform - ANSWER-graphic representation of a sound that occurs over a period of time
AC waveform - ANSWER-A plot of a current or voltage which constantly changes in amplitude and direction
Frequency measured in - ANSWER-Measured in Hz
Period measured in - ANSWER-Time
Period / Frequency - ANSWER-- As period increases , frequency decreases
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Magnetism - ANSWER-An invisible force that pushes or pulls magnetic materials.
- Classified as Permanent or Temporary
magnetic field - ANSWER-The area of magnetic force around a magnet
Electromagnetism - ANSWER-When 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 - ANSWER-Thumb points in direction of current flow
As your Polarity changes - ANSWER-So does your direction of current
Convert AC to DC - ANSWER-RMS converts AC to DC
- Vrms = 0.707 x Vpk
- Vavg = 0.637 x Vpk
- Characteristics Needed For Sine Wave Calculations - ANSWER-- Frequency
- Period
- Wavelength
Period Symbol - ANSWER-T ( Time )
Harmonics - ANSWER-- Fundamental Frequency
- Harmonic Frequency
Ex - 60 Hz 2nd Harmonic is 120 Hz
Subharmonic is division
Peak vs peak to peak - ANSWER-Peak is Half the wave Peak to peak is the entire wave
Inductance opposes change in what - ANSWER-Opposes change in current
Inductor measured in - ANSWER-Measured in Henrys
Electromagnetic induction - ANSWER-the process of creating a current in a circuit by changing a magnetic field
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