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Q. What do you understand by common control?
In some switching systems, control subsystem may be an integral part of switching network itself. Such system iscalled direct control switching systems. Those systems in which control subsystem is outside switching network are called common control switching system. Stronger exchanges are generally direct control systems while crossbar and electronic exchanges are common control system. All stored program control systems are common control systems. Common control is also called register control orindirect control.
Q. Draw a neat circuit of Colpitt's oscillator using an n-p-n transistor. Give its equivalent circuit obtain expressions for (i) frequency of oscillation and(ii) minimum gain for s
Prepayment Meters Usage of prepayment meters will extensively improve the revenue collection of the utilities. There are a number of ways in that prepayment assures revenue pr
How do you be in Harward
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Name the switching schemes used in a digital exchange
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Q. If a feeder circuit-breaker trips, what action is needed? Ans: First isolate the faulty feeder check the faulty area on which fault the breaker was tripped (open circuit,
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