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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.
Decoders and multiplexers are termed, medium scale integration (MSI) devices; this term implies that the device is complex in construction and usually its operation as well. Below
Explain properties and application of Copper. Properties 1) Cooper is reddish brown in color. 2) Cooper is malleable and ductile and can be forged, cast, rolled, mach
Methods of Testing Irrespective of reasons, testing is commonly carried out 1. On site, or 2. In a Meter Testing Station (MTS) accredited as per IS/ISO/IEC 17025.
First Quadrant or Class A chopper A chopper two mode operation of class A chopper can be explained as follow.
Q. Determine the h-parameters for the circuit shown in Figure and obtain the transfer function V 2 /V 1 when I 2 = 0.
Example of high resistivity material is (A) Nichrome (B) Silver (C) Gold (D) Copper Ans: Nichrome is example of high resistivity
The magnetic fields can be plot by using: i. Compass ii. Iron dust method .
solve problem by neural network using matlab code
Q. A balanced delta-connected load with a per-phase impedance of 12 + j9 is supplied by a 173-V, 60-Hz three-phase source. (a) Determine the line current, the power factor, th
Why do potential barriers breaks when a breakdown voltage is application to semiconductor
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