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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
What is the main thing to look for in calculations of air gaps?
Q. Let the solenoid carry an alternating current of 10 A (rms) at 60 Hz instead of the direct current. Find an expression for the instantaneous force.
Q. Athree-phase, 600-kVA, 2300:230-V,Y-Ytrans- former bank has an iron loss of 4400 W and a full- load copper loss of 7600 W. Find the efficiency of the transformer for 70% full lo
I WANT TO KNOW WHAT IS THE THORY OF PLOTTING V-I CHARACTERISTIC CURVE OF SILICON DIODE ???
y[n]=2z=1
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