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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.
Application of Microprocessors Microprocessor microcontroller based systems may be used in almost every filed of life and their applications are increasing day by day
Customer Indexing Scheme: Customer indexing has to be carried out in a way, that makes it probable to associate the customer's geographical and electrical address along with h
Explain conduct insulation resistance test on 100 VA inverter used for mobile and Laptop charging sockets? Ans: The insulation resistance of the inverter shall be calculated w
Q. Given the K map of a logic function as shown in Figure, in which ds denote don't-care conditions, obtain the SOP expression.
Q. The unit impulse response h(t) of a linear system is h(t) = 5e -t cos(2t - 30°). Determine H(s).
Question: Figure shows the basic circuit of the BJT Common Emitter Amplifier. (a) What is the function of RB, RC, Ci, Co and CE ? (b) (i) Sketch the d.c. equivalent circu
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Why do wenot see the battery and capacitor combination for power backup? Ans) There are "super capacitors" that are used for power backup - they are well-organized for short-te
Molecular Chain (MIT, Princeton, Colorado) Consider a one-dimensional chain consisting of N molecules which exist in two configurations, α, β, with corresponding energies and
Two stations, located on mountain tops 40 km apart, communicate with each other using two identical paraboloidal antennas with pencil beam- width of 1°, aperture ef?ciency of 0.8,
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