ECE :: Network Analysis and Synthesis
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The number of electrons in motion at the instant of positive peak of a symmetrical ac wave is the same as that at the instant of negative peak.
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A two branch parallel tuned circuit has 100 Ω resistance and 0.1 H inductance in one branch and 10-6 F capacitor in the other. At resonance frequency, the dynamic resistance is
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Special circuits using neon tubes, contact relays and capacitors are used in many domestic appliances. The role of capacitor in figure is to
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A series R, L, C circuit has R = 2Ω, L = 1H, C = 1 μF. It is connected to an ac variable frequency source of peak voltage 10 V. At resonance the power supplied by the source will be
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In the circuit shown in figure the inductor current and capacitor voltage are given at a time t. At this instant i is __________ A and
is __________ A/sec.
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The inductance of an air cored coil is 2 H. The number of turns is made 3 times, all other quantities remaining the same. The new value of inductance will be 2 2
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A loudspeaker transformer has a turns ratio of 20 : 1. The speaker impedance is 20Ω. Primary impedance of transformer is
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, the phase at w = 15 is
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. ZL 
20 x 400