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Explain Noise
Noise is unwanted signals which degrade the desired signal content and therefore the performance of the system. Noise might be produced either externally or internally to the system. External noise contains atmospheric interference, man-made interference, lightning, etc. Internal noises are produced by the components and devices used in the system.
Q. If an analog message that has a spectral extent of 15 kHz is sampled at three times the Nyquist rate, determine the sampling rate.
examples in building electric helicopter using cardboard, balsa wood, scotch tape, glue, binder clips, rubber bands, rubber stoppers, etc. attached to a 12v power supply
what is transistor how it works?
Q. For the low-pass filter configuration of Figure, with R i = R f = 1M, calculate C f such that the 3-dB point is at 1 kHz.
Q. Explain Pulse-Code Modulation? PCM is the simplest and oldest waveform coding scheme for processing an analog signal by sampling, quantizing, and binary encoding. Figure sho
Tick off the material, which is different from the group (A) Constantan. (B) Manganin. (C) Nichrome. (D) Brass. Ans: Tick off the materi
Q.‘Pentium processor has a superscalar architecture'. Describe the meaning of statement. Ans:Pentium microprocessor is organized with three execution units. One executes float
Q. Why the gain of the amplifier decreases if the CE is avoided? When the ce is connected in the circuit, ac signals get bypassed through it to the ground. In the absence of Ce
Q. Explain about Differentiator? Shown in Figure is a differentiator which is obtained by replacing R1 in the inverting amplifier of Figure by a capacitor C. Assuming ideal op-
Mould Casting: Plaster Moulding : In this method, the mould is prepared in gypsum or plaster of paris. In practice, the plaster of paris is mixed with tale, asbestos, fibers
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