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Q. Explain about Stored Program Control?
Stored Program Control: In centralized control, all control equipment is replaced by a single processor which should be quite powerful. It should be capable of processing 10 to 100 calls per second, depending on the load on system, and concurrently performing many other ancillary tasks. A typical control configuration of an ESS using centralized SPC is displayed in Figure. A centralized SPC configuration can use more than one processor for redundancy purposes. In almost all present day electronic switching systems employing centralized control, only a two-processor configuration is used. A dual processor architecture can be configured to operate in one of three modes:
(i) Standby mode
(ii) Synchronous duplex mode
(iii) Load Sharing mode
3-Phase 4 Wire Meters with CT and MD If load is commonly more than 50 A, CT operated meters should be used. It is to be remembered that CTs should be properly selected for acc
Q. Explain Time-invariant versus time-varying systems? When the parameters of a control systemare stationary with respect to time during the operation of the system, the system
Q. An n-channel JFET having V P = 3.5 V and I DSS = 5 mA is biased by the circuit of Figure with V DD = 28 V, RS = 3000 , and R 2 = 100 k. If the operating point is given by
what is the daily life work of triac
Q. WEIGHTED-RESISTOR CONVERTER? Figure shows a 4-bit weighted-resistor D/A converter which includes a reference voltage source, a set of four electronically controlled switches
State and prove parallelogram law of forces and explain it''s applications
Describe the physical properties and uses of the Brasses. Brass - It is an alloy of copper and zinc along with 60 percent copper and 40 percent zinc. Its properties are- 1.
Q. Explain about 'Emitter Follower'? EMITTER FOLLOWER : An emitter follower circuit shown in the figure is widely used in AC amplification circuits. The input and output of the
direct reading probes
region of convergence of (Z+2)*(12z-1)/((3z-1)*(4z+1 ))
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