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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
Conductors with a temperature rating of 75 degrees C are run in an area with an ambient temperature of 55 degrees C. What would be the de-rating factor that should be applied?
Q. Draw and explain the circuit of Wein bridge oscillator. Obtain the expressions for the (i) frequency of oscillation and (ii) condition for oscillation. Will oscillat
Question: (a) An FSK Scheme is used in a wireless transmission with the data bits 1011010. With the help of a labeled diagram, describe in detail the final output of the MSK
Determine phase - voltage and power: A balanced star connected load is supplied from a symmetrical 3-phase 440 Volt system. The current in each of the phase is 40 Amp and lags
Working out the function of a combination of gates? Truth tables are able to be used to work out the function of a combination of gates. Inputs Outputs
Sketch the Fermi-Dirac distribution function, F(E), alongside the energy band diagram for an n-type semiconductor, indicating the position of the Fermi level, EF, and the donor lev
Analogue Threshold switching a) Include a variable potential divider to the schematic diagram to control the transistor base voltage b) Include the potential divider compon
a. Determine the power flow diagram for a DC generator. b. A shunt wound DC generator delivers 496 A at 440 V to a load. The resistance of the shunt field coil is 110? and that
Question: a) What is the main difference between a latch and a flip flop? b) Draw the logic diagram of an SR-latch using only NAND gates. c) A positive edge triggered
Q. Explain the working of depletion MOSFET ? The gate voltage can control the resistance of the n-channel but as the gate is insulated from the channel, we can apply either a p
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