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Q. Explain about Register marker?
Register marker: Stronger selectors perform searching and counting . Though, the crossbar switch has no ‘intelligence'. Something external to switch should decide which magnets to operate. This is known as a Register Marker. As it takes less than a second to operate the switch, a marker can control many switches as well as serve many registers. So even a large exchange needs few markers. This is further stage of common control, which we willcall centralized control.
Comparison of Analog-Modulation Systems The comparison of analog modulation systems (conventional AM, DSB SC, SSB SC, VSB, FM, and PM) can be based on three practical criteria:
Allocative Efficiency: A neoclassical concept referring to allocation of productive resources (labour, capital, etc.) in a manner that best maximizes well-being (or 'utility') of
Shunt Capacitors Line losses owing to poor PF can be decreased through improving the PF. Overall improvement in the operating condition can be brought about through reducing t
The single phase alternator The underlined italicised terms in the following text identifies terms that you should understand and remember. The simple two pole generator
Q. What is meant by Thermal Runaway? Explain with reference to a transistor.How is it avoided in circuits? The collector current of a transistor increases with increasing tempe
Q. Working of On - off hook circuit in telephone hand set? On/off hook circuit (sometimes termed as a switch hook) is nothing more than a simple single-throw, double-pole (STDP
Explain the Synchronous Up-Down Counters? The circuit of a 3-bit synchronous up-down counter and a table of its sequence are shown below. Alike to an asynchronous up-down count
What are the modes of operations used in 8253? Each of the three counters of 8253 can be operated in one of the following six modes of operation. 1. Mode 0 (Interrupt on ter
A 20 h.p. , 3 phase, 400 volt, 60 hertz, 4 pole induction motor delivers full load at 5% slip. The mechanical rotational losses are 400W. Calculate (a) The electromagnetic torqu
what is pole core and pole shoe in a dc machine
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