Consider the following statements with regard to Lissajous pattern on a CRO: 1. It is a stationary pattern on the CRO 2. It is used for precise measurement of frequency of a voltage signal 3. The ratio between frequencies of vertical and longitudinal voltage signals should be an integer to have a steady Lissajous pattern Which of the above statements is/are correct?

1 only
2 only
3 only
1, 2 and 3

LohaHridoy

16 views

2025-01-04 04:42

1 Answers

AhmedNazir

Option 3 : 3 only

A Lissajous figure is a pattern which is displayed on the screen when sinusoidal signals are applied to both horizontal & vertical deflection plates of CRO.
These are used to measure the frequency of the given signals and the phase difference between the signals.
From the shape of the Lissajous pattern displayed on the CRO screen information about relative phases of signals and the frequency ratio of signals can be determined.
It is not used for precise measurement; it depends on the type of signals.
If one frequency is an integral multiple (harmonic) of the other, the pattern will be steady. If not, the figure will not be stationary.

16 views Answered 2022-09-04 04:29

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