What was the main purpose of lissajou figures (phase plot) for this lab? Lissajo

Question

What was the main purpose of lissajou figures (phase plot) for this lab? Lissajou figures showed frequency relationship between resistor voltage versus source voltage. Choose one

A)

We adjusted the frequency until we obtained a straight line with positive slope; thus implying the resistor and source where at the same frequency because their frequency relationship was not being affected by the inductor(coil) and capacitor at resonant frequency.

B)

Lissajou figures showed phase relationship between resistor voltage versus source voltage. We had a zero phase difference at all frequencies because the source and resistor voltages are in agreement for all frequencies at all points in time.

C)

Lissajou figures showed frequency relationship between resistor voltage versus source voltage. We had a zero frequency difference at all frequencies because the source and resistor voltages are in agreement for all frequencies at all points in time. This is how the lissajou helped find the resonant frequency.

D)

Lissajou figures showed phase relationship between resistor voltage versus source voltage. We adjusted the frequency until we obtained a straight line with positive slope; thus implying the resistor and source where in phase because their phase relationship was not being affected by the inductor(coil) and capacitor at resonant frequency.

Explanation / Answer

Hare Krishna

correct option will be ( D )

At resonant frequency inductor voltage & capacitor voltage have equal magnitude but out of phase so net voltage across inductor & capacitor become Zero. hence the source voltage & resistor voltage will be in phase

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