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Electronic Systems Thinking and Circuits · Qualifier · 26 Oct 2025 · September 2025 term

Question 16: If the fundamental frequency of the waveform is obtained…

Question 16

+2.5 marksNumerical answer

The figure shows a sinusoidal waveform. With reference to the graph shown below, answer the given subquestions.

The figure shows a sinusoidal waveform. With reference to the graph shown below, answer the given subquestions.

If the fundamental frequency of the waveform is obtained from the plot, then the frequency of its fourth harmonic is ______ Hz.

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Correct answer: 160

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Question 16 of 20 in the IIT Madras BS Electronic Systems Thinking and Circuits (ESTC) Qualifier paper sat on 26 Oct 2025, in the September 2025 term (IIT M ES QUALIFIER AN EXAM QEQ1 26 Oct). It carries 2.5 marks.

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