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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.
Importance: The transistor is the main active component in practically all current electronics, and is considered through many to be one of the greatest inventions of the 20 t
Elementary Induction Machines In the discussion that followed Equation, the third possiblemethod of producing constant torque was to cause the mmf axes of stator and rotor to r
Question: A DC, separately excited motor is supplied from a 240-V source. When the motor is unloaded, it draws 1A of current from the source. When the motor is loaded, it draws
Q. Required Conditions for connecting two transformers in parallel? Ans: a) Voltage rating should be same b) Per unit impedance should be same c) Phase sequence should
a) Illustrate the Schematic diagram of the Transformer Box used in the Practical Session b) Calculate the output voltage on an Oscilloscope and determine its amplitude and freq
a. Given a timer with a terminal count and a clock frequency of 10 MHz measure the following: (i) Range & Resolution (ii) Terminal count values needed to measure 3ms interval
Uses of Zener Diode Zener diodes are extensively used as voltage references and like shunt regulators to regulate the voltage across small circuits. While connected in parall
Q. Description of clauses used in a parallel construct? When a thread comes across a parallel construct a set of new threads is made to execute parallel region. Inside the para
Mode 1 In this mode transistor Q gets turned on by the positive output of the PWM. After that current flows through inductor L transistor Q then back to supply in thi
A rocket on a test stand is modeled as a column clamped at x = 0 and free at x = L, and subjected to compressive force P applied at the free end. The direction of load P remains
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