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Life Interactive UPS Systems
The block diagram of lien integrative UPS is shown in figure when the main supply is ON static switch remains closed and load is connected to mains through an inductance L. In this condition the battery bank the DC through inverter which is used in as charger now.
Under the condition of power failure the main static switch becomes open. In this condition the battery bank supplies the power to the load through the inverter.
Q. Explain working of Bipolar junction transistors? The family of bipolar junction transistors has two members: the npn BJT and the pnp BJT. Both types contain semiconductor ju
how does the magnetic bond method work? Application of the magnetic bong method & advantages and disadvantages of the magnetic bond method.
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Effect of Supply Voltage a.As the applied as voltage is increased hysteresis loss increases. b.Eddy current losses are given by W e α f 2 t 2 B 2 m Where B m =
Questions: (a) Suppose a 100 kHz switching power supply. (i) Evaluate the magnitude of the wave impedance of the radiated field of a very short wire in the switching power s
Q. A single-phase, two-winding, 10-kVA, 440:110- V, 60-Hz transformer is to be connected as an autotransformer to supply a load at 550 V from a 440-V supply. Draw a schematic diagr
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A flyback converter is to be designed so that it operates in continuous "current" (flux) mode with a duty cycle of D = 0.45 when input voltage V s = 48 V, output voltage V o = 30
Explain the hysteresis loop of a magnetic material. Hystereses loop-Below the Curie temperature all-ferromagnetic materials show the identified hysteresis in the B (i.e. flux
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