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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 about Simplex communication? Simplex communication: Microphone and the earphone are transducer elements of the telephone communication system. Microphone converts
I want simulink model for carrier based pwm method
Q. A 150-kVA, 2400/240-V, 60-Hz, single-phase transformer has the following parameters: R 1 = 0.2 , R 2 = 0.002 , X 1 = 0.45 , X 2 = 0.0045 , RC = 10 k, and Xm = 1.55 k,
Define the general purpose embedded system. a. General purpose microprocessor For illustration, Intel 80x86, Motorola 68HCxxx or Sparc b. Embedded general purpose process
Q. What do you mean by Frequency Response? As with all electronic circuits, op amps have limited frequency response. Because of the negative feedback of the circuit, the passba
Describe the operation performed by the instruction OUT 47 h, AL. This transfers the content of AL to I/O port 47h. See that I/O port number shows as 0047h on the 16 bit addres
Q. Use of Speaker? Speaker:Basically speaker is the receiver for telephone. Speaker converts electrical signals received from local loop to acoustical signals(sound waves) that
Apply the rule-of-thumb dc design presented in this section for a silicon npn BJT with β = 70 when the operating Q point is defined by I CQ = 15 mA and I BQ = 0.3 mA, with a dc s
Q. How is the electron beam focused to a fine spot on the face of the CRT? Sol. The functional diagram of an electrostatic focusing arrangement is shown below. The pre-accele
what is strain gauge
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