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Q. A single-phase industrial plant consists of two loads in parallel:
P1 = 48kW PF1 = 0.60 lagging
P2 = 24kW PF2 = 0.96 leading
It is operated from a 500-V, 60-Hz source. An additional capacitor C is added in parallel to improve the plant's overall power factor to unity.Determine the value of C in µF. Also sketch the power triangles before and after the addition of C, and find the overall current drawn from the supply.
Q. Elucidate the nature of signals produced on subscriber's loop by a pulse dialer and a touch tone dialer. Ans: DTMF is a simple two-of -eight encoding scheme where every
Explain Nodal analysis (supernode)
(a) Evaluate whether the sinusoidal signal x(t) = A cos (2πf 0 t + θ) is an energy-type or a power-type signal. (b) Show that any periodic signal is not typically energy type, a
The frequency of an oscillator may be measured by an oscilloscope with a callbrated time base(True/False)
Q. Introduction to power systems? Thomas A. Edison's work in 1878 on the electric light led to the concept of a centrally located power station with distributed electric power
a. Determine the circuit of three transistors dynamic RAM cell and define briefly read and write functions. b. Write short note on factors influencing choice of layer for wiring
Q Using a combination of Uni-selectors and two motion selectors, draw a diagram of thousand line exchange and illustrate its working. Ans: The diagram for such an exchange i
Q. What do you eman by Digital Circuits? The use of nonlinear devices (BJT and FET) in constructing linear amplifiers. Although these devices are inherently nonlinear, their op
If a current of 20A flows for five minutes, find the quantity of electricity transferred. Quantity of electricity, Q = It = 20 x 5 x 60 = 6000C
Kirchoff's Current Law The total current entering a node in a circuit is equal to the total current leaving that node. A Node is a junction between two or more components.
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