1- The second wave is phase shifted by +0.2 rad (a small amount) from the first
ID: 2039333 • Letter: 1
Question
1- The second wave is phase shifted by +0.2 rad (a small amount) from the first wave. Which is true about the phasors?
a- The phasor for the first wave goes through the vertical orientation first. (The second-wave phasor lags the first-wave phasor in their rotations.)
b- The phasor for the second wave goes through the vertical orientation first. (The second-wave phasor is ahead of the first-wave phasor in their rotations.
2-Two waves travel through the observation point in the same direction. Which is true about the resultant wave?
a -The resultant wave will have the maximum possible amplitude if the phasors are perpendicular and the minimum possible amplitude if they are in opposite directions.
b- The resultant wave will have the maximum possible amplitude if the phasors are aligned and the minimum possible amplitude if they are in opposite directions.
c- The resultant wave will have the maximum possible amplitude if the phasors are aligned and the minimum possible amplitude if they are perpendicular.
3- If the two waves traveling through the observation point are exactly out of phase, which is true?
a- The phasors are aligned.
b- The phasors are in opposite directions.
c- The phasors are perpendicular.
4-Two waves, with different amplitudes, now travel through the point in the same direction. Which is true?
5-What is the orientation of the phasor when a wave valley travels through the point?
a- The phasor for the first wave goes through the vertical orientation first. (The second-wave phasor lags the first-wave phasor in their rotations.)
Explanation / Answer
1. b
2. b
3. b The phasors are in opposite directions.
4. a The wave with the greater amplitude has a longer phasor.
5. a down the vertical axis
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