Network Theory

This is an MCQ-based quiz on Network Theory.

This includes Lumped Networks, Distributed Networks, Unilateral Networks, and Bilateral Networks.

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How is the loop analysis different in application/functioning level as compared to Kirchoff’s law?

Utilization of loop currents instead of branch currents for writing equations Capability of branch current to carry multiple networks Reduction in the number of unknowns for complex networks All of the above

Which theorem assists in replacement of an impedance branch over the network by the other network comprising different circuit components, without affecting the V-I relations throughout the entire network?

Superposition Theorem Compensation Theorem Substitution Theorem Maximum Power Transfer Theorem

According to the linear graph theory, the number of possible trees is always equal to the determinant of product of ______

Only complete incidence matrix Reduced incidence matrix & its transpose Cut-Set matrix Tie-set matrix

Consider the mathematical representation of nth order differential equation given below. What does the notation v(t) indicate in it?

(dn i/dtn) + a1 (dn -1 i /dtn-1) + …… +a n-1 (di / dt) + an i = v(t)a. Independent variable Input or forcing function Excitation All of the above

Which notation of instant implies that the unchanged condition of network is about to change?

t(0)+ t(0)– t* tˆ

For a constant k type LPF with T- section, with the cut-off frequency of about 4kHz, what will be the value of stop-band attenuation at 8 kHz?

10.03 dB 22.87 dB 35.04 dB 50.02 dB

How is an insertion loss represented in terms of power ratio?

α = 10 log10 | P1 / P2 | decibel α = 10 log10 | P2 / P1 | decibel α = 20 log10 | P1 / P2 | decibel α = 20 log10 | P2 / P1 | decibel

Which unit is used for the measurement of an insertion loss?

Neper Weber Ohm Watt

Which type of impedance in asymmetrical network is estimated at a single pair of network terminals especially in the chain of infinite networks?

Image impedance Iterative impedance Characteristic impedance All of the above

Transfer admittance function is the ratio of Laplace transforms of ________

Current at one port to voltage at other port Voltage at one port to current at other port Current at one port to current at other port Voltage at one point to voltage at other port

What will be the value of equivalent single source, if the two voltage sources connected in series combination possess equal or similar polarity?

Addition of two sources with polarities similar to that of two sources Addition of two sources with opposite polarity Difference between the two sources with polarities similar to that of two sources Difference between the two sources with polarities similar to that of greater among the two sources

What would be the nature of ‘ZL‘, if ‘Zeq‘ reactance is inductive according to ‘Maximum power transfer theorem’?

Inductive Capacitive Resistive All of the above

Which parameter should be essentially equal to the number of nodes in the network in accordance to the principle of duality?

Total impedance Total admittance Number of meshes Number of voltage sources

Consider the assertions given below. Which among them do/does not specify/ies the property of ‘Complete Incidence Matrix’?

Determinant of a loop of a complete incidence matrix is always zero Addition of all entries in any column should never be equal to zero Rank of connected or oriented graph is always ‘n-1’ All of the above

Which type of network response exhibits its behaviour by taking into consideration the effect of time associated with it?

Zero input response Zero state response Both a and b None of the above

Which is the correct condition of symmetry observed in z-parameters?

z11 = z22 z11 = z12 z12 = z22 z12 = z21

An open circuit reverse voltage gain in h-parameters is a unitless quantity and generally equivalent to ________

V1 / I1 (keeping V2 = 0) I2 / I1 (keeping V2 = 0) V1 / V2 (keeping I1 = 0) I2 / V2 (keeping I1 = 0)

Which oscillations will be generated in the time domain response, if complex conjugate poles are present with negative real part?

Damped oscillations Undamped oscillations Sustained oscillations None of the above

If the value of (P1 / P2) in power ratio expressed in terms of dB is greater than unity, what does ‘D’ indicate in the network?

Power loss Power gain Power stability Power saving

What is an ideal value of attenuation for the frequencies in pass band especially for a cascade configuration?

Zero Unity Infinity Unpredictable

Quiz/Test Summary

Title: Network Theory

Questions: 20

Contributed by:

Diego Wed, Mar 30, 2022 07:31 AM UTC

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