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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. Three waveforms seen on an oscilloscope are shown in Figure. If the horizontal scale is set to 50 ms per division (500 ms for the entire screen width), and the vertical scale is
a. With neat circuit diagram and frequency response curve define the two stages RC coupled amplifier. What are its benefits and applications? b. Sketch ideal and the actual resp
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Illustration the basic working principle, process parameters, economics, safety precautions and applications of plasma Arc Machining process(PAM) Discuss Electron Beam Machining
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Explain n - Type semiconductor. n - Type semiconductor:- (i) If small amount of pentavalent impurity is added with, to a pure semiconductor giving a large number of free
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Q. Elucidate the nature of signals produced on subscriber's loop by a pulse dialer and a touch tone dialer. Ans: DTMF is a simple two-of -eight encoding scheme where every
Q. For the NOR and inverter realizations shown in Figure, find the truth table, the type of gate realized, and the expression for the logic output, in each case.
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