Let , and  be the currents flowing through the capacitor, inductor, and resistor, respectively, in the circuit given below. The AC admittances are given in Siemens (S).

Which one of the following is TRUE?

In the circuit below,  is an ideal AC voltmeter and  is an ideal AC ammeter. The source voltage (in Volts) is .

What should be the value of the variable capacitor  such that the RMS readings on  and  are 25 V and 5 A, respectively?

A series RLC circuit has a quality factor  of 1000 at a center frequency of . The possible values of  and  are

For the circuit shown, the locus of the impedance  is plotted as  increases from zero to infinity. The values of  and  are:

Consider the circuit shown in the figure with input  in volts. The sinusoidal steady state current  flowing through the circuit is shown graphically (where  is in seconds). The circuit element  can be _______.

The current in the RL-circuit shown below is .

The value of the inductor (rounded off to two decimal places) is _____H.         

The current I in the given network is         

In the circuit shown, ifVolts, R=1kΩ and C=1µF, then the steady state current i(t), in milliamperes (mA) is        

For the circuit given in the figure, the voltage  (in volts) across the capacitor is         

In the circuit shown, the positive angular frequency (in radians per second) at which the magnitude of the phase difference between the voltages and equals  radians, is

Angle of must befor which real & imaginary part must be equal or

The figure shows an RLC circuit excited by the sinusoidal voltage 100 cos (3t) Volts, where t is in seconds. The ratio  is _________________.

In the circuit shown, V is a sinusoidal voltage source. The current I is in phase with voltage V. The ratio  is ______________.         

he figure shows an RLC circuit with a sinusoidal current source.

At resonance, the ratio  , i.e., the ratio of the magnitudes of the inductor current phasor and the resistor current phasor, is ________.        

In the RLC circuit shown, the input voltage is given by . The output voltage V₀(t) is

In the circuit shown, at resonance, the amplitude of the sinusoidal voltage (in Volts) across the capacitor is ________.

In the given circuit, the maximum power (in Watts) that can be transferred to the load  is _______.

The voltage ( ) across the capacitor (in Volts) in the network shown is ____.

In the circuit shown, the average value of the voltage  (in Volts) in steady state condition is____.

The maximum power transfer between two cascaded sections of an electrical network, the relationship between the output impedanceof the first section to the input impedance  of the second section is

A 230 V RMS source supplies power to two loads connected in parallel. The first load draws 10 kW at 0.8 leading power factor and the second one draws 10kVA at 0.8 lagging power factor. The complex power delivered by the source is         

A series LCR circuit is operated at a frequency different from its resonant frequency. The operating frequency is such that the current leads the supply voltage. The magnitude of current is half the value at resonance. If the values of L, C and R are 1 H, 1 F and 1 Ω, respectively, the operating angular frequency (in rad/s) is ________.

In the circuit shown in the figure, the value of node voltage  is         

In the circuit shown in the figure, the angular frequency ω (in rad/s), at which the Norton equivalent impedance as seen from terminals b-b′ is purely resistive, is _________.        

The steady state output of the circuit shown in the figure is given by . If the amplitude, then the frequency ω is

At very high frequencies, the peak output voltage (in Volts) is ________.

In the circuit shown, the current I flowing through the 50 Ω resistor will be zero if the value of capacitor C (in μF) is ______.         

A source  has an internal impedance of. If a purely resistive load connected to this source has to extract the maximum power out of the source, its value in  should be

In the circuit shown below, if the source voltage  then the Thevenin’s equivalent voltage in Volts as seen by the load resistance  is

The average power delivered to an impedance   by a current  is

In the circuit shown below, the current through the inductor is         

The circuit shown below is driven by a sinusoidal input. The steady state output  is

In the circuit shown below, the current I is equal to

For parallel RLC circuit, which one of the following statements is NOT correct?

The current I in the circuit shown is        

An AC source of RMS voltage 20 V with internal impedance  feeds a load of impedance  in the figure below. The reactive power consumed by the load is

An independent voltage source in series with an impedance  delivers a maximum average power to a load impedance  when

The RC circuit shown in the figure is         

Two series resonant filters are as shown in the figure. Let the 3-dB bandwidth of Filter 1 be  and that of Filter 2 be The value of is         

in the AC network shown in the figure, the phasor voltage  (in Volts) is         

A negative resistance is connected to a passive network N having driving point impedance as shown below. For to be positive real,

In a series RLC circuit, L = 1H and . The resonant frequency is

For the circuit in figure the instantaneous current  is

The circuit shown in figure, with, , C = 3F has input voltage . The resulting current i(t) is

For the circuit shown in Figure, the time constant RC=1ms. The input voltage is. The output voltage  is equal to

The transfer function  of an R-L-C circuit is given by. The Quality factor (Q-factor) of this circuit is

Consider the following statements  and  

: At the resonant frequency the impedance of a series R-L-C circuit is zero.

: In a parallel G-L-C circuit, increasing the conductance G results in increase in its Q factor.

Which one of the following is correct?        

A source of angular frequency 1rad/sec has a source impedance consisting of 1Ω resistance in series with 1 H inductance. The load that will obtain the maximum power transfer is

A series RLC circuit has a response frequency of 1 KHz and a quality factor Q = 100. If each R, L and C is doubled from its original value, the new Q of the circuit is

The driving point impedance Z(s) of a network has the pole-zero locations as shown in figure. If Z(0) = 3, then Z(s) is

In figure shown below, the value of the load resistor R which maximizes the power delivered to it is

When the angular frequency in figure is varied from 0 to , the locus of the current phasor is given by

For the circuit shown in Figure, determine the phasors  and         

The circuit of Figure represents a         

In Figure, the steady state output voltage corresponding to the input voltage  is

For the circuit in Figure, which is in steady state

 at which the magnitude of the impedance across terminals a and b reaches a maximum.

Given .

The Thevenin’s equivalent voltage  appearing between the terminals A and B of the network shown in Figure is given by

For the network shown in Figure, evaluate the magnitude of the current I flowing through the  resistor using superposition theorem.

A coil with a quality factor (Q) of 10 is put in series with capacitor  of , and the combination is found to draw maximum current when a sinusoidal voltage of frequency 50 Hz is applied. A second capacitor  is now in parallel with the circuit. What should be the capacitance of  for combined circuit to act purely as a resistance for a sinusoidal excitation at a frequency of 100Hz? Calculate the RMS current drawn by the combined circuit at 100 Hz if the applied voltage is 100 V(RMS).         

The parallel RLC circuit shown in Figure is in resonance. In this circuit

Determine the frequency of resonance and the resonant impedance of the parallel circuit shown in figure. What happens when ?

A voltage source of internal impedance  supplies power to a load of impedance  in which only  is variable. Determine the value of  for maximum power transfer from the source to the load. Also, find the numerical value of  if the source impedance is  (purely resistive) and  is .

In the circuit of the figure is the equivalent impedance seen across terminals a, b is

 In the circuit of the figure is all currents and voltages are sinusoids of frequency  rad/sec. If (resonance frequency) and, where I is positive,  then find I,  and

For the circuit shown in the figure is choose state variables, to be ,,

If , , , , then what would the total energy dissipated in the resistors in the interval  be?

In the given figure, ,  and  are ideal ammeters. If  and  read 3 A and 4 A respectively, then  should be read        

The current, i(t), through a  resistor in series with an inductance, is given by  

The RMS value of the current and the power dissipated in the circuit are:

A series R-L-C circuit has a Q of 100 and an impedance of  at its resonant angular frequency of  radiation/sec. The values of R and L are:

R = ___________ ohms,                L = _________ H.

A series RLC circuit consisting of ,  and , is connected across an a.c. supply of 200 V rms. The rms voltage across the capacitor is

A generator of internal impedance, , deliver maximum power to a load impedance,, only if . (True=1, False=0 )

 represents the input impedance of a network. ( True =1 , False=0)

The response of an LCR circuit to a step input is If the transfer function has

(A) Over damped

(B) Critically damped

(C) Oscillatory

(1) Poles on the negative real axis

(2) Poles on the imaginary axis

(3) Multiple poles on the positive real axis

(4) Poles on the positive real axis

(5) Multiple poles on the negative real axis

In the series circuit shown in figure for series resonance, the value of the coupling coefficient K will be         

In figure, ,  and  are ideal ammeters? If  reads 5A,  reads 12A, then  should be read.

For the series R-L-C circuit of figure, the partial phasor diagram at a certain frequency is shown in figure, The operating frequency of the circuit is:

In a series RLC high Q circuit, the current peaks at a frequency