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Q. What are the different types of distributing frames used in exchanges?
Ans:
Different distribution frames used in exchange are displayed in figure. Each subscriber in a telephone network is connected generally to the nearest switching office by a dedicated pair of wires. Subscriber loop denotes to this pair of wires. It would be unwisely to run physically independent pairs from each subscriber premises to exchange. It is far easier to lay cables comprising a number of pairs of wires for different geographical locations and run individual pairs as needed by subscriber premises.
Question 1: (a) Describe the three main types of electrical fault which might occur in a circuit. (b) What is three phase electric power? Give its advantages. (c) Explain th
Q. A three-phase, 600-kVA, 2300:230-V,Y-Y trans-former bank has an iron loss of 4400Wand a full-load copper loss of 7600 W. Find the efficiency of the transformer for 70%full load
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What is Global Positioning Satellites (GPS) Global positioning satellite (GPS) systems are used to determine exact location of a car, ship, airplane or any conveyance that trav
Q. What are the different parameters of jfet ? A bipolar junction transistor (BJT) is a current controlled device that is output characteristics of the device are controlled by
Consider the following signals, sketch each one of them and comment on the periodic nature: (a) x(t) = A cos(2πf 0 t + θ), where A, f 0 , and θ are the amplitude, frequency, and
Q. When the two-wattmeter method for measuring three-phase power is used on a certain balanced load, readings of 1200W and 400W are obtained (without any reversals). Determine the
Define Shifting and Reversing – Linear System? The signal x[n - m] is said to be time-shifted by m samples, where m is an integer. If m is positive, the shift is to the right (
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