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Q. What is inter digit time?
Break time is nominally 61 ms and make time is nominally 39ms. Digits are separated by idle period of 300 ms known as inter digit time. It is vital that switching machine recognize inter digit time so that it can separate pulses from successive digits. Central office switch incorporates a special timeout circuit to make sure that break part of dialing pulse isn't misinterpreted as phone being returned to its on-hook (idle) condition.
Q. Effect of feedback on stability? Let us consider the direct transfer function of the unstable first-order system of Figure (a). The transfer function is given by whe
design and sketch an optimal circuit that takes a 4 bit number and generates an 8 bit output equal to the square of the input
Electrical energy If the power is measured in watts and the time in seconds then the unit of energy is watt- seconds or Joules.
Q. For the CS JFET ampli?er circuit of Figure, R D = 2k and R L = 3k. The JFET with ro = 15 k has a voltage gain A v1 =-4.5 when the entire source resistance is bypassed. Fin
explain the proprty and the application of carbon and tungsten in lamp?
(a) Let a unit impulse of current i(t) = δ(t) be applied to a parallel combination of R = 3 and C = 1/2 F. Determine the voltage vC(t) across the capacitor. (b) Repeat (a) for
Discuss the modes of connection for polyphase transformers Discuss with aid of electrical grouping and wiring connection diagrams the different types of connections for polypha
A 13.8 kV feed er circui t breaker has a 600:5 multira tio curr ent transform er with charact eristics as show n in Figure 5.11. Th e max - imum load on the feed er is 80 A pri mar
Q For a three-phase, fully controlled, recti?er-fed, separately excited dc motor, corresponding to ideal no-load operation, find the expression for the no-load speeds. Comment on w
Var Compensators Employing Flexible AC Transmission System Devices These are a new generation of VAr compensators which employ solid-state devices (thyristors) for the generati
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