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Define Spectrum of Real Signals?
In the real world, we rarely come throughout a pure sine wave. Typical signals have a wide spectrum as displayed in the above diagram. Information above or below a fixed frequency or amplitude is usually considered surplus to requirements. For instance, hi-fi manufacturers assume that 20kHz is the highest frequency that the ear can detect.
Assuming that fm is the maximum frequency of interest in a signal, after that we would like to sample at the Nyquist Rate, that is at fs = 2fm (the sampling frequency = twice the maximum frequency). If we go ahead and sample at 2fm, we get a spectrum as shown in the top diagram. The bands overlap and we generate aliasing in the output signal. To prevent this, we must first make use of a low-pass filter on the input signal to eliminate any frequency components above fm.
(a) Show the equivalent NOR realizations of the basic NOT, OR, and AND gates. (b) Show the equivalent NAND realization of the basic NOT, AND, and OR gates.
Common Source Amplifier A common-source amplifier is one of three basic single-stage field-effect transistor abbreviated as FET amplifier topologies, commonly used as a volta
Explain DJNZ instructions of intel 8051 microcontroller? a) DJNZ Rn, rel Decrement the content of the register Rn and jump if not zero. b) DJNZ direct, rel Decreme
Question 1 Explain how switching systems are classified Question 2 Explain the function of pulse dialing in rotary dial telephone Question 3 Explain the functioning of crossba
if a resistor present in the middle of two branches in such a way that their polarities coincide then how do we choose the polarity of that resistor
what is that mean and explain
Q. Why do we cascade amplifiers? Why is RC coupling the most widely used coupling between 2 stages of a cascading amplifier? The voltage or power gain or frequency response obt
You will develop a simulation that will consist of the following five components: Controller: This script component controls the simulation. It shall permit the user to: 1. C
Connection of Shunt Capacitors at Distribution Transformer Provision of capacitors at load point is found to be hard in practice because of the additional investments needed.
Checking at Site - Testing of Meter The routine testing of meters should be carried out once in 3 years. Further, surprise checks should be conducted at the consumer's install
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