Superposition theorem is not applicable to networks containing

A)     Nonlinear elements

B)      Dependent voltage sources

C)      Dependent current sources

D)     Transformers

The fourier series expansion of a periodic function with half wave symmetry contains only

A)     sine terms

B)      cosine terms

C)      odd harmonics

D)     even harmonics

Voltage transfer function of a simple RC integrator has

A)     a finite zero and a pole at infinity

B)      a finite zero and a pole at the origin

C)      a zero at the origin and a finite pole

D)     a zero at infinity and a finite pole

The impulse response of an R-L circuit is a

A)     Rising exponential function

B)      Decaying exponential function

C)      Step function

D)     Parabolic function

A water boiler of home is switched on to the AC mains supplying power at 230V/50Hz. Th frequency of instantaneous power consumed by the boiler is

A)     0 Hz

B)      50 Hz

C)      100 Hz

D)     150 Hz

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

A)     Equal to the resonant frequency

B)      Greater than the resonant frequency

C)      Less than the resonant frequency

D)     None of these

A passive 2-port network is in a steady-state. Compared to its input, the steady state output can never offer

A)     Higher voltage

B)      Lower impedance

C)      Greater power

D)     Better regulation

Two two-port networks are connected in cascade. The combination is to be represented as a single two-port network. The parameters of the network are obtained by multiplying the individual

A)     Z-parameter matrix

B)      h-parameter matrix

C)      y-parameter matrix

D)     ABCD parameter matrix

If a capacitor is energised by a symmetrical square wave current source, then the steady state voltage across the capacitor will be

A)     Square wave

B)      Triangular wave

C)      Step wave

D)     Impulse wave

If the step response of an initially relaxed circuit is known, then the ramp response can be obtained by

A)     Integrating the step response

B)      Differentiating the step response

C)      Integrating the step response twice

D)     Differentiating the step response twice

The maximum value of mutual inductance of two inductively coupled coils with self inductances L1=49mH and L2=81mH is

A)     130 mH

B)      63 mH

C)      32 mH

D)     3969 mH

Power factor of pure inductor is

A)     0

B)      1/1.414

C)      1

D)     2

When compared to a first-order low-pass filter, a second order low-pass filter has

A)     Low voltage gain

B)      Higher voltage gain

C)      Faster drop in filter response

D)     Higher cut off frequency

On closing switch S, the circuit in the given figure is in steady-state. The current in the inductor after opening the switch S will

A)     Decay exponentially with a time constant of 2S

B)      Decay exponentially with a time constant of 0.5S

C)      Consist of two decaying exponentials each with a time constant of 0.5S

D)     Be oscillatory

A ramp voltage v(t)=100 V, is applied to an RC differentiating circuit with R=5kΩ and C=4 μF. The maximum output voltage is

A)     0.2 V

B)      2 V

C)      10V

D)     50 V

The reciprocal of a network function is

A)     An immittance function, if the original function is an omittance function

B)      A transfer function, if the original function is a transfer function

C)      Never an immittance function

D)     Never a transfer function

In RLC series resonant circuit at the half power points

A)     Current is half of the current at response

B)      Impedance is half the impedance at resonance

C)      Resistance is equal to the resultant reactance

D)     None of these

The network has7 nodes and 5 independent loops. The number of branches in the network is

A)     13

B)      12

C)      11

D)     10

Two 2 H inductance coils are connected in series and are also magnetically coupled to each other. The coefficient of coupling being 0.1. the total inductance of the combination can be

A)     0.4 H

B)      3.2 H

C)      4.0 H

D)     3.6 H

When a number of 2 port networks are connected in cascade, then equivalent can be obtained by

A)     Adding individual Z matrices

B)      Adding individual Y matrices

C)      Multiplying  individual Chain matrices

D)     Multiplying  individual h matrices