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Q. Three identical single-phase transformers are to be connected to form a three-phase bank rated at 300 MVA, 230:34.5 kV. For the following configurations, determine the voltage, current, and kVA ratings of each single-phase transformer:
(a) Δ , (b) Y- , (c) Y-Y, (d) ΔY.
GTO ( Gate Turn Off) GTO stands for gate turn off thyristor . it is four layer PNPN device. It can be triggered into conduction like a conventional thyristor by a pulse
Suppose we have a coil wound onto a ring of material with relative permeability µ r . Provided that the relative permeability µ r >> 1, then the magnetic flux lines will s
Compute the induced emf: If a coil of 150 turns is linked with a flux of 0.01 wb while carrying a current of 10 Amp, compute the inductance of coil. Now, if current is reverse
thus secondary winding of transformer consists of neutral line or not?
Write a short explanation of the principles of super-heterodyne receiver. It may help to use sample block diagram to state the process. Why is the production of the intermediate fr
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A forward converter has the following parameters: input source voltage V s = 100 V, N 1 /N 2 = N 1 /N 3 = 1, magnetizing inductance L m = 5 mH, output inductor L o = 200 μH, C
Develop and execute a program to analyze the circuit shown in Figure (a), and use PROBE for plotting v C (t).
importance of critical speed in dc generator
Explain how materials can be classified into three groups on the basis of atomic structure. An atom has a positively charged nucleus surrounded through a group of negatively ch
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