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Q. What is the need of MODEM in data communication?
Need of Modem: Modems are used to interface computers, computer networks in addition to other terminal equipment to telecommunication lines and radio channels. The word "Modem" is a contraction derived from words modulator anddemodulator. Modems at the transmitting station changes digital output from the computer or other data terminal equipment to a form that can be easily sent via a communication circuit whereas the receiving modem reverse the process. Modems differ in rate of data transmission, modulation methods and bandwidth and standards have been developed to provide compatibility between different manufacturers' equipment and systems.
Thevenin's theorem procedure: 1. Open circuit R L and find Thevenin's voltage (V TH ). 2. Find Thevenin's resistance (R TH ) when voltage source is short circuit or curren
Consider a three-phase induction motor with a normal torque-speed characteristic. Neglecting the effects of stator resistance and leakage reactance, discuss the approximate effect
Q. In plotting a hysteresis loop the following scales are used: 1 cm = 400 At / mand 1 cm=0.3 T. The area of the loop for a certain magnetic material is found to be 6.2 cm 2 . Calc
fir and iir filter design
Discuss Stepper motor interfaced to the 82C55. A stepper motor rotates into steps in response to digital pulse input. There shaft of the motor rotates in equivalent increments
Find the resistance of 800 m of copper cable of cross-sectional area 20 mm . Take the resistivity of copper as 0.02 Ωm.
Q. Explain with the help of a block diagram the working of harmonic distortion analyzer. OR Write short note on Harmonic distortion analyzer. Sol. Several methods h
(a) How transistor will be used as an amplifier? (b) Give relation between α and β? (c) Show the biasing arrangement for the PNP transistor in common base configuration, so t
Q. What do you mean by Source Encoding? After the quantization of message samples, the digital system will then code each quantized sample into a sequence of binary digits (bit
study of transistor volt meter
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