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Mini Mock on Network Theory & Control System for ESE 2018

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Question 1

A single–phase load is supplied by a single–phase voltage source. If the current flowing from the load to the source is 10∠ –150°A and if the voltage at the load terminals is 100∠60° V, then the

Question 2

The state equation for the current I₁ shown in the network shown below in terms of the voltage V_x and the independent source V, is given by

Question 3

In the given circuit, the parameter k is positive and the power dissipated in the 2 Ω resistor is 12.5 W. The value of k is ________

Question 4

The line A to neutral voltage is

for a balanced three phase star-connected load with phase sequence ABC. The voltage of line B with respect to line C is given by

Question 5

A non-ideal voltage source V_s has an internal impedance of Z_s If a purely resistive load is to be chosen that maximizes the power transferred to the load, its value must be

Question 6

The initial charge in the 1 F capacitor present in the circuit shown is zero. The energy in joules transferred from the DC source until steady state condition is reached equals ______. (Give the answer up to one decimal place.)

Question 7

The following figure shows the root locus plot (location of poles not given) of a third order system whose open loop transfer function is:

Question 8

The signal flow graph for a system is given below. The Transfer Function

for this system is

Question 9

The Nyquist plot of loop transfer function G(s) H(s) of a closed loop control system passes though the point (–1, j0) in the G(s) H(s) plane. The phase margin of the system is