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Calculate the value of the frequency if the signal completes half of the cycle in 30 sec. Assume signal is periodic.

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Calculate the value of the frequency if the signal completes half of the cycle in 30 sec. Assume signal is periodic.

(a) 0.028 Hz

(b) 0.016 Hz

(c) 0.054 Hz

(d) 0.045 Hz

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My doubt is from Starting in division Starting of Electric Drives

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Right option is (b) 0.016 Hz

To explain: The frequency is defined as the number of oscillations per second. It is reciprocal of the time period. It is expressed in Hz. The given signal completes half of the cycle in 30 seconds then it will complete a full cycle in 60 seconds. F = 1÷T = 1÷60 = .016 Hz.

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