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Q. A balanced wye-connected load with a per-phase impedance of 4 + j3 is supplied by a 173-V, 60-Hz three-phase source.
(a) Find the line current, the power factor, the total volt-amperes, the real power, and the reactive power absorbed by the load.
(b) Sketch the phasor diagram showing all the voltages and currents, with ¯VAB as the reference.
(c) If the star point of the load is connected to the system neutral through an ammeter, what would the meter read?
Principal of Bipolar junction transistor: A bipolar junction transistor (BJT) is a three-terminal electronic device that constructed of doped semiconductor material and might
Data Communication 1. Write short notes on: a. Sky wave propagation b. Line of sight propagation 2. List and describe the different types of errors that occur during dat
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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 is the expected peak demand for a transformer feeding the following loads? Connected kVA
Extrinsic Material In addition to thermally generated carriers, it is possible to create carriers in the semiconductor by purposely introducing impurities into the crystal
Q. What do you mean by Counters? The shift register can be used as a counter because the data are shifted for each clock pulse. A counter is a register that goes through a pred
Q. The energy stored in a 2-µH inductor is given by wL(t) = 9e-2t µJ for t ≥ 0. Find the inductor current and voltage at t = 1 s.
Q. Determine L and C of the band pass filter circuit of Figure to have a center frequency of 1 MHz and a bandwidth of 10 kHz. Also find the Q of the filter.
Explain Einstein relation. Einstein relation: There exists a significant relation between the diffusion constant and the mobility. It is termed as the Einstein relation and
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