ECE :: Network Analysis and Synthesis
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An RL series circuit has an impedance of 20 Ω when frequency is 25 Hz. At f= 50 Hz, the impedance will be
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In figure, the voltmeter is ideal. The transformer has two identical windings with perfect coupling. The reading of voltmeter is
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The resistance of the circuit shown is figure is
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The self inductances of two coils are 27 H and 3 H. If the winding or coils is such that 50% of flux of one links the other, the mutual inductance is
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The rms voltage measured across each of the circuit element in figure is as shown, when the circuit is excited by a sinusoidal voltage Es, the rms value of the source voltage es is
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For H(s) to be positive real, the condition Re[H(jω)] ≥ 0 for 0 ≤ ω ≤ ∞ is
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is
3 + j4
I2 = 0.22 A
