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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.
Guarding Against Losses in Service Cables and Connections The service cables to consumer premises are often a source of loss that can be reduced given below. The length of ser
Op code Format As we have seen in the section that the first byte of all the instruction is the op code. microprocessors reads this op code and decodes it to identif
Hybrid Meters These meters have electronic measurement circuits but show is by impulse counters/stepper motors. Accuracy is classically class 1.0 or 2.0 and commonly these met
Q. A single-phase, 3-kVA, 220:110-V, 60-Hz transformer has a high-voltage winding resistance of 0.3 , a low-voltage winding resistance of 0.06 , a leakage reactance of 0.8 on i
Elements related to capacitance a. Electric field: Area that surrounds the electric charge or charges system where the enhancing and reducing of electric force exists.
Modify the design of the circuit shown in FIGURE and draw a circuit diagram to provide rotary actuation in both directions using a single direction pump (to replace the bi-directio
Solid-State Control of Synchronous Motors The speed of a synchronous motor can be controlled by changing its supply frequency. With variable-frequency control, two modes of op
Switching characteristics during turn on A positive gate pulse between gate and cathodeis sufficient to turn on a thyrisotr. In this period thyristor changes its stat
precision
Define Characteristics of Discrete Time Systems - Linear? A discrete-time system is said to be linear if it obeys the principles of superposition. That is, the response of a li
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