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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 Time-invariant versus time-varying systems? When the parameters of a control systemare stationary with respect to time during the operation of the system, the system
Loudspeakers using single driver are unable to cover the entire frequency band from low frequency to high frequency. Sometimes multiband frequency is required for the bass enhancem
Calculate total resistance among terminal A and B for the circuit below.
function of equlizer rings
Q. What are the applications of JFET? · FET is used as a buffer in measuring instruments, receivers since it has high input impedance and low output impedance. · FET's are u
How is EISA bus different from ISA bus? The Extended Industry Standard Architecture (EISA): it is a 32 bit modification to the ISA bus. Since computers became larger and had wi
Explain Atomic structure and Energy Band Diagram of Silicon. Silicon : It is other most commonly used semiconductor. Atomic number of it is 14. The no. of electrons in first,
Common emitter configuration: even in common emitter configuration current relation is like is same like common bias configuration. For common emitter configuration output cha
advantages and disadvantages of inductive coupling
modes of operation of 8255
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