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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 drain characteristics of JFET with external bias? It gives relation between Id and Vds for different values of Vgs.(which is called the running variable). The ab
Q. Explain Shunt-field control process? Shunt-field control, armature-resistance control offers a constant-torque drive because both flux and, to a first approximation, allowab
Copy data byte 10H LDAX instruction Example : Copy data byte 10H stored at memory location 3020 H to the accumulator using LDAX instructions. Solution : To use
what is plane transmission grating/?
The torque produced by each conductor in the field will be: where A is the area of the armature winding in the magnetic field, Ia is the current in armature winding, and B
Various compensation techniques
Q. The no-load and blocked-rotor tests conducted on a 110-V, single-phase induction motor yield the following data: • No-load test: input voltage 110 V, input current 3.7 A, and
Q. Give the principle of biasing a FET amplifier. To correctly bias the FET, the gate needs to be negative with respect to the source. Bias is obtained in the following manner:
Explain indirect data addressing mode (with examples) available in microprocessors. Indirect Mode: Address given in instruction includes address where the operand resi
Q. Point charges, each of √4πε 0 C, are located at the vertices of an equilateral triangle of side a. Determine the electric force on each charge.
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