What are the frequencies of the harmonic content of a 60 Hz square up to the fifth harmonic?

What will be an ideal response?


The harmonic sinusoidal components of 60 Hz square wave are the first, third, and fifth harmonics at 60 Hz, 180 Hz, and 300 Hz.

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IDENTIFY TEST PROCESS SYMBOLS AND DIAGRAMS

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An expressway off-ramp consisting of a single lane leads directly to a tollbooth. The rate of arrival of vehicles at the expressway can be considered to be Poisson with a mean of 45 veh/hr, and the rate of service to vehicles can be assumed to be exponentially distributed with a mean of 1 min. (a) What is the average number of vehicles waiting to be served at the booth (that is, the number of vehicles in queue, not including the vehicle being served)? (b) What is the length of the ramp required to provide storage for all exiting vehicles 90% of the time? Assume the average length of a vehicle is 18 ft and that there is an average space of 10 ft between consecutive vehicles waiting to be served. (c) What is the average waiting time a driver waits before being served at the tollbooth (that

is, the average waiting time in the queue)? What will be an ideal response?

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The universal motor has a wound armature and brushes like an AC motor, as well as an added component, the _____.

A. inductive winding B. compensating winding C. neutral plane D. synchronous winding

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The harmonic function cx[k] for a periodic continuous-time signal x(t) whose fundamental period is 4 is zero everywhere except at exactly two values of k, k = ±8. Its value is the same at those two points, cx[8] = cx[?8] = 3. What is the representation time used in calculating this harmonic function?

What will be an ideal response? The harmonic function cx[k] for a periodic continuous-time signal x(t) whose fundamental period is 4 is zero everywhere except at exactly two values of k, k = ±8. Its value is the same at those two points, cx[8] = cx[?8] = 3. What is the representation time used in calculating this harmonic function?

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