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Q. Show Spectral Analysis and Signal Bandwidth?
Spectral analysis is based on the fact that a sinusoidal waveform is completely characterized by three quantities: amplitude, phase, and frequency. By plotting amplitude and phase as a function of frequency f(= ω/2π = 1/T), the frequency-domain picture conveys all the information, including the signal's bandwidth and other significant properties about the signal that consists entirely of sinusoids. The two plots together (amplitude versus frequency and phase versus frequency) constitute the line spectrum of the signal x(t).
If x(t) happens to be a periodic signal whose Fourier coefficients are known, Equation can be rewritten as
The phase angles are referenced to the cosine function, in agreement with our phasor notation. The corresponding phasor diagram of Fourier coefficients is shown in Figure. Equation reveals that the spectrum of a periodic signal contains lines at frequencies of 0, f,2f, and all higher harmonics of f, although some harmonics may be missing in particular cases. The zero-frequency or dc component represents the average value a0, the components corresponding to the first few harmonics represent relatively slow time variations, and the higher harmonics represent more rapid time variations.
Q. Classify Feedback control systems according to purpose of the system? • Position control systems. Here the output position, such as the shaft position on a motor, exactly fo
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Q. Show Process of Speed Control of DC Motors? Equation showed that the speed of a dc motor can be varied by control of the field flux, the armature resistance, and the armatur
explain speed control of dc motor
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A rifle with a mass of 3,5 kg fires a bullei with a mass of 120 g with a muzzle velocity of 420 mls. Calculate the following: 1.4.''l The momentum before the rifle was fired ''1.4.
can you please briefly explain about significance of the word direction in vectors with some valid points
Parity flag - Registers If after any arithmetical or logical operation if number of the accumulator are even parity flag (P) is set otherwise reset.
Q. Figure shows the master-slave JKFF. Assuming that the output changes on the falling edge of the clock pulse (i.e., when the clock pulse goes from high to low), discuss the opera
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