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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. Explain the working of LEDs OPTOELECTRONIC devices either produce light or use light in their operation. The first of these, the light-emitting diode (LED), was developed to
What are the precautions to be taken before basic work on electrical installations? Ans: Before starting any electrical works on installations disconnect the power supply to
Q. An RL series circuit carries a current of 0.02 cos 5000t A. For R = 100 and L = 20 mH, find the impedance of the series combination and determine the voltage across the series
Explain about the term embedded system. An embedded system is a system which has software embedded within computer-hardware that makes a system dedicated for an application(s)
Q. Draw and explain an RC integrator .Derive the relation between input and output voltage. Solution: A circuit in which the output voltage is directly proportional to the
Q. What do you mean by FM Stereo? IT shows the block diagram of an FM stereo transmitter and an FM stereo receiver. The following notation is used: • f L (t), fR(t): Left a
Explain LOOP instructions in 8086 family with example and their effect on flag. LOOP: (Jump to given label until CX = 0) it is used to repeat a sequence of instructions for
Mixed Bonding Displayed by III-V compounds bonding partly ionic and partly covalent. Ionic character of bonding becomes much more prominent since the constituent atoms m
Fundamental of Metal Casting: Fundamental of Metal Casting : Casting process is based on the property of a liquid to take up the shape of vessel containing it. Molten metal
Compound motor It is possible to arrange for part of the field coil to be in series with the armature and part in parallel This gives rise to a motor with a mix
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