3-A-007: Waveforms
3-7A1:
What is a sine wave?
A wave whose amplitude at any given instant can be represented by the projection of a point on a wheel rotating at a uniform speed.
A constant-voltage, varying-current wave.
A wave following the laws of the trigonometric tangent function.
A wave whose polarity changes in a random manner.
3-7A2:
How many degrees are there in one complete sine wave cycle?
360 degrees.
90 degrees.
270 degrees.
180 degrees.
3-7A3:
What type of wave is made up of sine waves of the fundamental frequency and all the odd harmonics?
Square.
Sine.
Cosine.
Tangent.
3-7A4:
What is the description of a square wave?
A wave that abruptly changes back and forth between two voltage levels and stays at these levels for equal amounts of time.
A wave with only 300 degrees in one cycle.
A wave whose periodic function is always negative.
A wave whose periodic function is always positive.
3-7A5:
What type of wave is made up of sine waves at the fundamental frequency and all the harmonics?
Sawtooth wave.
Square wave.
Sine wave.
Cosine wave.
3-7A6:
What type of wave is characterized by a rise time significantly faster than the fall time (or vice versa)?
Sawtooth wave.
Cosine wave.
Square wave.
Sine wave.
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