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Calculate the time period of the waveform x(t)=1cot(πt+7π).(a) 0.5 sec(b) 1 sec(c) 3 sec(d) 5 secThis question was addressed to me by my school principal while I was bunking the class.Asked question is from Dynamic Braking of DC Series Motors topic in portion Braking of DC Motors & Induction Motors of Electric Drives

Answer»

The correct ANSWER is (b) 1 SEC

Easiest EXPLANATION: The fundamental time period of the cot WAVE is π. The time period of x(t) is a π÷π=1 sec. The time period is INDEPENDENT of phase shifting and time shifting.



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