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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.
Q. Balanced wye-connected loads drawing 10 kW at 0.8 power factor lagging and 15 kW at 0.9 power factor leading are connected in parallel and supplied by a 60-Hz, 300-V, three-phas
Uninterruptable power Supply An uninterruptible power supply provides emergency power when utility power is not available. It maintains the supply under all condition
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SR FLIP-FLOP (SRFF) The symbol for the SRFF is shown in Figure (a), in which S stands for "set," R stands for "reset" on the input side, and there are two outputs, the normal o
what is zener breakdown mechanism ?
Connection of Shunt Capacitors - Across Individual Customers The most appropriate manner of improving PF of the distribution system and thereby reducing line losses is to link
oc and sc tests
1. A very narrow laser beam in air is shone into a sphere of solid glass that has a uniform refractive index n>1 and radius ? . The beam makes an angle a in air with the normal to
Q. Draw and explain the circuit of Wein bridge oscillator. Obtain the expressions for the (i) frequency of oscillation and (ii) condition for oscillation. Will oscillat
Once you are happy with the biasing components you will need to disable the DC simulation component and enable the SP component. (Right click the component and then select the "com
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