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a. Explain the meaning of amplitude modulation? Show that the AM output having two sidebands and the carrier frequency.
b. Illustrate that the equivalent parallel impedance of a tuned circuit is its equivalent resistance for noise
c. Describe Co-channel and Adjacent channel interference in radio receivers. Also compare wideband and narrow band FM.
d. Define Armstrong frequency modulation system with block diagram.
CMOS processes: The low-performance "lateral" bipolar transistors occasionally employed in CMOS processes are sometimes designed symmetrically, i.e., with no distinction betwe
Q. Advanced Mobile Phone System? Cellular systems employed cells with a radius in the range of 5-18 km. The base station usually transmitted at a power level of 35 W or less, a
Q. Write a control word for counter 1 of 8253 / 8254 that selects following options: load least significant byte only, mode 5 of operation and binary counting. Then write an inst
An electroscope charged WITHOUT contacting a charged body is charged by: a) Induction b) Conduction c) Convection d) Insulation Ans: An electroscope char
Q. What do you mean by Oscilloscope? To measure time-varying signals (voltages and currents), an instrument known as an oscilloscope is employed. It can be used as a practical
Q. Use (a) mesh analysis and (b) nodal analysis to determine the current through the 4-resistor of the circuit of Figure.
simplified common base hybrid model
Transients in R-L-C circuits: Scenario The Laplace transform is a valuable mathematical tool which allows the solution of difficult differential equations to be easily de
Q. What is right-through routing? In right-through routing, originating exchange determines complete route from source to destination. No routing decisions are taken at interme
Thyristor Terminology The followings terms are used in SCR specifications: Latching current : The latching current is the value of on stat e current required to mai
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