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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.
Ask question #Minimum 10] In the system shown in Figure 4-1, the rated voltage of the line is 110kv, and the conductors are all LGJ-120 type. The parameters are: r1=0.21O/km,x1=0
How many machine cycles does 8085 have, mention them The 8085 have seven machine cycles. They are Opcode fetch Memory read Memory write I/O read I/O
What do you understand by solar water heating and discuss different kind of solar water heating based on collector-storage and circulation type. Discuss integrated collector - s
Q. Explain braking mode of rotating machines? The braking mode has both mechanical and electric energy input. The total input is dissipated as heat. The machine is driven by th
real time uses of norton''s theorem
A 100kw,230v,dc shunt generator,with Ra=0.05,and Rf=57.5 has no load rotational loss(friction,wandage,core loss)of 1.8kw.compute a) The generator efficiency at full load.
A three stage switching structure is to accommodate N = 128 input and 128 output terminals. For 16 first stage and 16 last stage, verify the number of cross points for nonblocking.
what is the working of thermal transducers?
Q. Characteristics of Transformer? The characteristics of most interest to power engineers are voltage regulation and ef?ciency. The voltage regulation of a transformer is a me
Write explanatory notes on 8284 Clock generator. The 8284 is an ancillary element to the microprocessors. Without this clock generator, a few additional circuits are needed to
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