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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. Find the line current after the addition of capacitor bank? A 60-Hz, three-phase motor draws 25 kVA at 0.707 lagging power factor from a 220-V source. It is desired to impro
Q. If b and a are the radii of the outer and inner conductors, respectively, of a coaxial cable using a polyethylene dielectric (ε r = 2.26), what ratio b/a is needed for the cabl
Explain graphic adapter and monitor. Video card changes digital output from the computer in an analog video signal and sends the signal by a cable to the monitor also termed a
Technical Losses in Power Systems The technical losses in power systems occur because of energy dissipated in the conductors and equipment used for transmission, transformat
please explain phasor diagram and equivalent circuit
Determine self inductance of coil: A flux of 0.5 m Wb is generated by coil A of 600 turns wound on a ring with a current of 2 A in it. Determine (a) self inductance of coil A,
DESIGN A MOD-6 ASYNCHRONOUS COUNTER
Drift Current and Diffusion Current : There are two mechanisms in which electrons and holes move through a semiconductor. One of these is termed as drift and other is diffusi
Q. Draw a 100 line exchange using two motion selectors and elucidate, how switching takes place in it. Ans: In a 100 line exchange, every subscriber is assigned a 2 digit
really need help how to run the veener press line for wood-based panels?
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