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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.
A periodic voltage consists of sinusoidal pulses having an amplitude of 150 V (SEE DIAGRAM BELOW). Use Fourier Series Expansion to calculate: 1. the amplitude of the DC co
Q. Explain Steady-State Stability? The property of a power system that ensures that it will remain in equilibrium under both normal and abnormal conditions is known as power-sy
1. Name the three parts of a programmable logic controller (PLC) and explain why the PLC is preferred by designers over electromechanical relays. 2. Medium-voltage circuit break
Q. Block schematic diagram of SS7? Levels are as below: Level 1: The Physical Layer Level 2: The Data Link Level Level 3: The signaling network level Level 4: The User Pa
working of varecter diode
Let a message signal m(t) have a bandwidth of 10 kHz and a peak magnitude of 1 V. Estimate the bandwidth, by using Carson's rule, of the signal u(t) obtained when m(t) modulates a
write down the application of shift register and explain it.
block diagram of digital control system and explain each block
A sequential circuit has two inputs w1 and w2, and an output, z. Its function is to compare the input sequences on the two inputs. If w1=w2 during any four consecutive clock cycl
I needed a PLC and SCADA assignment just the program and it has to be done in simatic flexible and step 7 software!
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