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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.
Draw the re-model for the circuit given in figure and calculate: a). The input impedance (β=100), b). The output impedance (r0 = 50 kΩ) and c). The mid-band collector-base
Status Signals There are three status signals IO/M s and s 1 . All these signals are output signals. IO/ M - it is a status signals used to distinguish whether the
Q. Explain shockly's equation and its significance in plotting the transfer characteristics ? The linear relationship does not exists in the output of the JFET, the relationshi
Q. Describe the operation of 8279. And also explain following terms: (i) N key Roll over. (ii) Key board debounce. (iii) FIFO RAM. Ans: 8279 is a programmabl
Hard magnetic materials are used for making (A) Permanent magnets. (C) Conductors. (B) Insulator. (D)Temporary magnets. Ans: Hard magnetic materials are
Describe the Automated flow lines with suitable diagrams? Also provide the Reason for Automating? Discuss the Work part Transfer Mechanisms in detail? Discuss the requirement fo
What are plastics? Plastics are materials (containing carbon as common element) that have organic substances of high molecular weight and are able of being formed in required
Transients in R-L-C circuits: Scenario The Laplace transform is a valuable mathematical tool which allows the solution of difficult differential equations to be easily de
Q. Digital demodulator processes? The functions of the receiver in Figure are the inverse of those in the transmitter. At the receiving end of a digital communication system, t
Q. Do the following operations with 8 bit bytes, and indicate the condition of the overflow and carry bits. a) 10111011 + 00000011 b) 11101101 + 11111001 c) 11011011 + 110
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