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8.2k
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Calculate the maximum bit rate for a channel having b.w. 3100 Hz and S/N ratio 20 dB
electronic circuits and communication updated 4.5 years ago by teamques10 ★ 65k
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Explain virtual short and virtual ground concept.
electronic circuits and communication updated 4.5 years ago by teamques10 ★ 65k
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An analog signal has a bit rate of 8000 bps and a band rate of 1000 band. How many data elements are carried by each signal element? How many signal elements do we need?
electronic circuits and communication updated 4.5 years ago by teamques10 ★ 65k
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Write short note on properties of ideal OP-AMP
electronic circuits and communication updated 4.5 years ago by teamques10 ★ 65k
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Give reasons for the following I. FET is called as a square law device II. Barkhausens criteria should be satisfied to get oscillations
electronic circuits and communication updated 2.3 years ago by pedsangini276 • 4.8k
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6.6k
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Explain the necessity and significance of modulation in communication.
electronic circuits and communication updated 2.3 years ago by pedsangini276 • 4.8k
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6.6k
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Compare LC and crystal oscillator.
electronic circuits and communication updated 4.5 years ago by teamques10 ★ 65k
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Explain why crystal oscillators are considered to be more stable than other oscillators.
electronic circuits and communication updated 2.3 years ago by teamques10 ★ 65k
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Explain generation of SSB using phase shift method.
electronic circuits and communication updated 2.3 years ago by pedsangini276 • 4.8k
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6.2k
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) What is sampling theorem and state its significance in communication. What is the standard frequency for speech signal?
electronic circuits and communication updated 2.3 years ago by pedsangini276 • 4.8k
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Draw the block diagram of a phase cancellation SSB generation and explain how the carrier and unwanted side band are suppressed. What change is necessary to suppress the other side band?
electronic circuits and communication updated 2.3 years ago by pedsangini276 • 4.8k
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5.8k
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Give the proper definition for entropy and information rate.
electronic circuits and communication updated 2.0 years ago by pedsangini276 • 4.8k
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Draw the PAM, PWM and PPM waveforms in time domain assuming a sinusoidal modulating signal. Explain them in brief
electronic circuits and communication updated 2.3 years ago by pedsangini276 • 4.8k
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Find R1 and Rf in the lossy integrator so that the peak gain is 20 dB and the gain is 3 dB down from its peak when $\omega$ = 10,000 rad/s. Use capacitance of $0.01\mu F$.
electronic circuits and communication updated 2.3 years ago by pedsangini276 • 4.8k
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5.6k
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Explain Voltage divider bias or self-bias
electronic circuits and communication updated 4.5 years ago by teamques10 ★ 65k
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5.6k
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Draw and explain FET based Hartley and Colpitt Oscillator.
electronic circuits and communication updated 2.3 years ago by pedsangini276 • 4.8k
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5.6k
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List down various parameters of Opamp along with their typical values for IC74 I. Also explain what the significance of CMRR and Slew Rate is?
electronic circuits and communication updated 2.3 years ago by pedsangini276 • 4.8k
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5.5k
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Compare PAM, PPM & PWM.
electronic circuits and communication updated 2.3 years ago by pedsangini276 • 4.8k
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5.4k
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Explain input modes, CMRR for OP-AMP
electronic circuits and communication updated 4.5 years ago by teamques10 ★ 65k
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5.3k
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Explain super heterodyne receiver in detail along with the waveforms at each stage.
electronic circuits and communication updated 2.3 years ago by pedsangini276 • 4.8k
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5.3k
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Explain principle of FDM.
electronic circuits and communication updated 2.3 years ago by pedsangini276 • 4.8k
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5.3k
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Explain the concept of amplitude modulation.
electronic circuits and communication updated 2.3 years ago by pedsangini276 • 4.8k
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5.3k
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Comment on the following ADC/DAC specifications I. Resolution II. Linearity Ill. Accuracy IV. Settling Time V. Stability.
electronic circuits and communication updated 2.3 years ago by pedsangini276 • 4.8k
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5.2k
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Compare PAM, PPM and PWM
electronic circuits and communication updated 4.5 years ago by teamques10 ★ 65k
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5.2k
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How does the bandwidth change if the modulating frequency is doubled?
electronic circuits and communication updated 2.3 years ago by pedsangini276 • 4.8k
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