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Q. A 75-kVA transformer has an iron loss of 1 kW and a full-load copper loss of 1 kW. If the transformer operates on the following load cycle, determine the all-day efficiency:
8 hours full load at unity power factor
8 hours no load
8 hours one-half full load at unity power factor
Q. A transformer is rated 10 kVA, 220:110 V (rms). Consider it an ideal transformer. (a) Compute the turns ratio and the winding current ratings. (b) If a 2-load resistance
Explain Series capacitors These are connected in series with the line conductors and are used to reduce the inductive reactance of long transmission lines and hence the voltage
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Standards and Labelling - Features of Energy Conservation Standards and Labelling (S & L) has been recognized as a key activity for improvement in energy efficiency. The S & L
what ternary alloy, composition and binary substrate can be used for an LED at 1.55 µm optical fiber windo
Successive approximation ADC One method of addressing digital ramp ADC's shortcomings is so-called successive approximation ADC. Only change in this design is a very special c
Q. When the quantum step size δv and the step size of f (t) are the same as in , the quantizer is said to have a gain of unity. If, on the other hand, the quantizer has a gain of K
Q. What are the benefits of ccs over in-channel signalling? The benefits of CCS over in-channel signalling are listed below: a. Information can be exchange between processor
what is
Q. An RG-139/U rectangular waveguide is given to have dimensions a = 0.8636 mm and b = 0.4318 mm. Compute the theoretical and practical frequency ranges of operation for the guide.
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