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1. Name the three parts of a programmable logic controller (PLC) and explain why the PLC is preferred by designers over electromechanical relays.
2. Medium-voltage circuit breakers operating on system voltages between 600 volts and 15 kilovolts generally contain blow-out coils and a puffer. Describe a puffer.What is its funtion?
3. How is an electrical distribution system protected from lightning strikes? Name and describe the device used and describe its electrical connection to the distribution system it protects.
4. The first step in preparing a primary distribution cable for connection to a transformer, tap box, or other terminal equipment is to remove the semiconducting jacket. The next step is to crimp a flat lug onto the cable connector. List in any order any three of the next six steps in making the connection.
Q. Consider a full-wave single-phase bridge recti?er circuit with dc motor load, as shown in Figure (a). Let the transformer turns ratio be unity. Let the load be such that the
Determine the Service and Backwash Rates The system on site is a pressure sand filter, with a service curve. The filter is backwashed using the feed pump, at a higher flow rate, s
Q. A dc series motor, with a design constant K a = 40 and flux per pole of 46.15 mWb, operates at 200 V while taking a current of 325 A. The total series-field and armature-circui
what is shunt clipper?
Hall Effect experiment: Prob. Write short note on Hall Effect and its applications. What properties of a semiconductor are determined from a Hall Effect experiment? Sol.
define the physical significance of damping coefficient
Working and block diagram
what is zener breakdown mechanism ?
Discuss the ENDP assembler directive with example ENDP: It is stands for End Procedure, which informs assembler the end of a procedure. Within assembly language programm
Draw the phasor diagrams for an RLC series circuit supplied by a sinusoidal voltage source with a lagging power factor and a GLC parallel circuit supplied by a sinusoidal current s
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