

MCQOPTIONS
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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 | |