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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.
Q. A BJT is biased by the method shown in Figure. If V BEQ = 0.7V, β = 100, V CEQ = 10 V, and I CQ = 5 mA, find I 1 , I 2 , and IEQ.
Q. Digital demodulator processes? The functions of the receiver in Figure are the inverse of those in the transmitter. At the receiving end of a digital communication system, t
Magnetic materials
3 Phase 4 Wire Meters 3-phase 4 wire meters (10/20, 20/50 A) are used for agricultural and industrial consumers. For loads up to 50 A, the meters are directly linked to the su
what is use of dummy coil in DC m/c????
Q. The cutoff frequency of a dominant mode in an air-?lled rectangular waveguide is 3 GHz. What would the cutoff frequency be if the same wave - guide were ?lled with a lossless di
Q. An interface circuit consisting of R 1 and R 2 is designed between the source and the load, as illustrated in Figure such that the load sees a Thevenin resistance of 50 betw
a) Get the best linear relationship in accordance with least square analysis for the following data:- X 0.9 2.3 3.3 4.5 5.7 6.7 Y 1.1 1.6 2.6 3.2 4.0 5.0 b) The table belo
A small signal amplifier circuit is given in figure Q 4. The values of RD and RS must be set such that the gain of the system is 8. It is also known that Vgs = ¼ Vp. a). Per
The circuit shown below is a prototype 4 th - order low-pass filter which is required to meet the specification given. However the specification is not met due to inadequate atten
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