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Q. Explain Radio and Television Broadcasting?
Radio (AM and FM) and television broadcasting are the most familiar forms of communication via analog transmission systems. The receiver most commonly used in AM radio broadcasting is the superheterodyne receiver, shown in Figure, which consists of a radio-frequency (RF) tuned amplifier, mixer, local oscillator, intermediate frequency (IF) amplifier, envelope detector, audio-frequency amplifier, and a loudspeaker. Tuning at the desired radio frequency fc is achieved by a variable capacitor, which simultaneously tunes the RF amplifier and the frequency fLO of the local oscillator. Every AM radio signal, in a superheterodyne receiver, is converted to a common IF frequency of fIF = |fc - fLO| = 455 kHz, which allows the use of a single tuned IF amplifier for signals from any radio station in the frequency band. Matching the bandwidth of the transmitted signal, the IF amplifier is set to have a bandwidth of 10 kHz.
How the interrupts can be masked/unmasked in 8086? The 8086 interrupt priorities are concerned; software interrupts have the highest priority, followed by NMI followed by INTR.
see figure on this link: http://tinypic.com/r/1zodevk/8. A. j400 I1-j1200 I2 (A) B. -j400 I1+j1600 I2 (A) C. j400 I1+j400 I2 (A) D. -j400 I1-j400 I2 (A)
Q. (a) Obtain a Thevenin equivalent circuit at terminals A-B in the circuit. (b) What impedance ¯ZL, when connected to A-B, produces maximum power in ¯ZL? (c) Find the val
Q. Explain about Junction FET? The JFET is a three-terminal, voltage-controlled current device, whereas the BJT is principally a three-terminal, current-controlled current devi
Explain Contact resistance. Contact resistance: It is measured as the voltage drop from tail to tail of the mated contacts along with specified current flowing through the cont
explain the waorking principle of function generator
An arrangement of Windows so every window is neatly stacked with only the title bar of every window is showing.
Describe, using a flow diagram, the IC design process indicating the CAD tools that could be used at the various levels.
Question: a). Draw the energy diagram of a pn junction: (i) at thermal equilibrium, (ii) when a forward bias with magnitude half the built in potential (V = φk/2) is applie
Revenue Protection and Technology Interventions in Metering The power supply industry has reached an impasse where urgent steps are needed to improve the financial health of t
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