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Consider the following signals, sketch each one of them and comment on the periodic nature:
(a) x(t) = A cos(2πf0t + θ), where A, f0, and θ are the amplitude, frequency, and phase of the signal.
(b) x(t) = ej(2πf0t+θ) , A> 0.
(c) Unit step signal u-1(t) defined by u-1(t) =
(d) Discrete-time signal x[n] = A cos(2πf0n + θ), where n is an integer.
The block diagram for a 3-bit ripple counter is shown in Figure (a). Obtain a state table for the number of pulses N = 0 to 8, and draw a state diagram to explain its operation.
Explain the various modes in which DMAC works. Working of Direct memory access controller: The modes of operation has demand mode, block mode, single mode and cascade mode.
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Explain the hysteresis loop of a magnetic material. Hystereses loop-Below the Curie temperature all-ferromagnetic materials show the identified hysteresis in the B (i.e. flux
Q. A 25-kVA, 2200:220-V, 60-Hz, single-phase transformer has an equivalent series impedance of 3.5 + j4.0 referred to the primary high- voltage side. (a) Determine the highest
Comparison of Analog-Modulation Systems The comparison of analog modulation systems (conventional AM, DSB SC, SSB SC, VSB, FM, and PM) can be based on three practical criteria:
Give the properties of PVC. PVC- It is acquired from polymerisation of hydrogen chloride and acetylene in the presence of a catalyst as peroxides at about 50 0 C. Properties
Q. What is the difference between field effect transistor and the bipolar junction transistor? The important points of the comparison between the field effect transistor ands t
FET operation: Figure: I-V characteristics and output plot of a JFET n-channel transistor. The FET manages the flow of electrons (or electron holes) from the sourc
Q. Explain working of three-phase transformers? Transformation in three-phase systems can be accomplished in either of two ways: (1) connecting three identical single-phase tra
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