1.

Lissajous pattern shown in a double-beam cathode-ray oscilloscope screen for two sinusoidal voltages of equal magnitude and of the same frequency but of phase shift of 30° electrical is

A. a circle
B. a straight line at 45°
C. an ellipse in the first and third quadrant
D. an ellipse in the second and fourth quadrant
Answer» D. an ellipse in the second and fourth quadrant


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