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SSC Scientific Assistant EC: Digital Circuits Quiz 3

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Question 1

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

Question 2

A vertex v is a cut vertex of connected graph G if and only if there exist two vertices u and w in the graph G. Which among the following option is incorrect?

Question 3

What should be done to find the initial values of the circuit variables in a first-order R-C circuit excited by only initial conditions?

Question 4

The response of a series R-C circuit is given by

where q0 is the initial charge on the capacitor.
What is the final value of the current?

Question 5

A 3-phase, 4-wire system supplies power to a balanced star-connected load. The current in each phase is 15 A. The current in the neutral in the neutral wire will be

Question 6

A 100 resistor has an effective inductance of 0.1 μH and a distributed capacitance of 10 pF. Its time constant at medium frequency is

Question 7

Consider the following statements:
A step voltage is applied to an under-damped series RLC circuit in which R is variable. If R is
1) increased, the steady-state voltage across C will be reduced.
2) increased, the frequency of transient oscillations across C will be reduced.
3) reduced, the transient oscillations will die down at a fast rate.
4) reduced to zero, the peak amplitude of the voltage across C will be double that of input voltage.
Which of these statements is/are correct?

Question 8

For the below circuit, the current gain function has poles and zeros as

Question 9

The Y-parameters of the network shown below are

Question 10

A two-port network is described by the following equations:

Then, which one of the following is not correct?
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Jun 14ESE & GATE EC