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Q. Explain Telephone hand set and it’s working ?
A standard telephone set is comprised of a transmitter, a receiver and electrical network for equalization, associated circuitry to control side tone levels and to regulate signal power, and necessary signalling circuitry. Essentially a telephone setis an apparatus which creates an exact likeness of sound waves with an electric current. Figure demonstrates functional block diagram of a telephone set. Essential components of a telephone set are ringer circuit, on/off hook circuit, equalizer circuit, hybrid circuit, speaker, microphone and a dialling circuit.
Give the properties and application of bronze. Bronze : It is alloy of copper and tin. This alloy is very brittle and hard. Its corrosion resistance is better than brass. Bron
Digital Electronics: We have study the fundamentals of Digital circuits. Primary we have studied the mathematics of Binary numbers also called as Boolean algebra and how to im
Spread Time (t s ) During spread time anode voltage falls from 10% I a to the on state voltage drop and anode current rises from 90% I a to final value of anode
Q. Consider an infinitely long, straight wire (in free space) situated along the z-axis and carrying current of I A in the positive z-direction. Obtain an expression for ¯B everywh
Q. Explain how presentation layer helps in processing and establishing data in End to End layers. Ans: The purpose of presentation layer is to represent information to commu
notes about psd in ofdma and sc-fdma
Consider an RLC series circuit excited by v(t) = Ve st in the time domain. Assume no initial capacitor voltage or inductive current at t = 0. Draw the transformed network in the s
Q. Power Angle and Performance Characteristics? The real and reactive power delivered by a synchronous generator, or received by a synchronous motor, can be expressed in terms
One circuit has resistor 40? connected in series with inductor 15H and dc voltage 220V. Calculate: i) Time constant ii) Current at time (i) iii) Current at time 0.0
Explain Inverse Discrete-Time Fourier Transform 1. Observe the same things among this formula and the inverse analogue Fourier transform: The (1/2π) factor The sign
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