Questions & Answers of Resonance

Question No. 62

In the circuit shown below, the supply voltage is 10sin1000t volts. The peak value of the steady state current through the 1 Ω resistor, in amperes,

Question No. 64

The circuit below is excited by a sinusoidal source. The value of R, in Ω, for which the admittance of the circuit becomes a pure conductance at all frequencies is _____________.

Question No. 146

In the balanced 3-phase, 50 Hz, circuit shown below, the value of inductance (L) is 10 mH. The value of the capacitance (C) for which all the line currents are zero, in millifarads, is ___________.

Question No. 30

An inductor is connected in parallel with a capacitor as shown in the figure.

As the frequency of current i is increased, the impedance (Z) of the network varies as

Question No. 242

A series RLC circuit is observed at two frequencies. At ω1=1 krad/s, we note that source voltage V1=1000oV results in a current I1=0.0331oA. At ω2=2 krad/s, the source voltage V2=1000oV results in a current I1=231oA. The closest values for R,L,C out of the following options are

Question No. 22

The resonant frequency for the given circuit will be

Question No. 62

The R-L-C series circuit shown in figure is supplied from a variable frequency voltage source. The admittance - locus of the R-L-C network at terminals AB for increasing frequency ω is