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Q. Let m1(t) and m2(t) be two message signals, and let u1(t) and u2(t) be the corresponding modulated versions.
(a) When the combined message signal m1(t) + m2(t) DSB modulates a carrier Ac cos 2πfct , show that the result is the sum of the two DSB AM signals u1(t) + u2(t). That is to say, AM satis?es the superposition principle.
(b) Ifm1(t)+m2(t) frequency modulates a carrier, show that the modulated signal is not equal to u1(t) + u2(t). That is to say, FM does not satisfy the principle of superposition, and angle modulation is not a linear modulation method.
Q. Power Angle and Performance Characteristics? The real and reactive power delivered by a synchronous generator, or received by a synchronous motor, can be expressed in terms
precision
Question 1 (a) Describe the functions of the modulator and source encoder in a digital communications system. (b) By using appropriate examples, distinguish between th
Explain chemical vapour deposition method for the preparation of nanomaterial and its properties
Q. A shift register can be used as a binary (a) divide by-2, and (b) multiply-by-2 counter. Explain. Show a block diagram of a 4-bit shift-right register using JKFFs.
For the circuit of Fig: (i) using Kirchoff's Laws , find all the currents (ii) determine the voltage across each resistor and check that all loops comply with KVL (iii
A case study is required for development of different digital versions of band-pass filter corresponding to its analogue prototype described by the following normalised transfer fu
Q. (a) Consider the amplifier block in the circuit configuration of Figure. Find an expression for v 2 /v 1 in terms of R i , R o , and A of the amplifier. (b) Determine the
a cast steel has minimun diameter of 200 mm and a cross sectional area of 250/1000000 m . calclate the mmf to produce a flux of300/1000000 Wb.
Define Lines Parameters In power system analysis, the parameters of interest when modelling power lines are: inductance, capacitance, series resistance and leakage resistance.
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