ECE :: Network Analysis and Synthesis
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Three identical coils each having self inductance L are connected in series so that the fluxes of all the three are in the same direction. If mutual inductance between each pair of coils is M, the total inductance of the arrangement is
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In a resistive ac circuit, the current __________ the voltage by __________ .
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When two coupled coils of equal self inductance are cormected in series in one way the net inductance is 12 mH and when they are connected in the other way the net inductance is 4 mH. The maximum value of inductance when they are connected in parallel is
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An R-L series circuit is excited by a voltage v(t). The circuit was initially relaxed. Which of the following sources of v(t) would cause maximum current at t = 0+?
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Two capacitors each of capacitance C and breakdown voltage V are joined in series. The capacitance and breakdown voltage of the combination is
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The current wave shown in figure is applied at t = 0 to a 0.1 F capacitor. At t = 1 s, the voltage across capacitor is
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A capacitor can be represented by a capacitance C in parallel with a resistance R. For a good capacitor, the resistance R should be
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If a sheet of a mica is inserted between the plates of an air capacitor, the capacitance
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L1 = L2 = L = 4H. When in parallel effective inductance = 
For mica ∈r is more than that of air.
