Networks Analysis and Synthesis
For a transmission line open circuit and short circuit impedances are 20 Ω and 5 Ω. Then characteristic impedance is
Answer: D
Z0 = Zoc Zsc .
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In an ac circuit, the maximum and minimum values of power factor can be
Answer: B
Power factor is maximum and equal to 1 for purely resistive load. Power factor is minimum and equal to zero for purely reactive load.
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A current is flowing through a conductor with non-uniform area of cross-section. Then
Answer: D
Current density = current/area of cross-section. Same current throughout the conductor.
Since, area of cross-section is non-uniform, current density will be different at different cross-sections.
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The degree of the nodes 1, 2, 3, 4 is
Answer: D
Degree of node is the no.of branch incident to it.
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In an R-C series circuit excited by a voltage E, the charge across capacitor at t = 0+ is
Answer: A
Voltage across a capacitor cannot change instantaneously.
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The synthesis of minimum function was suggested by
Answer: A
The procedure is called Brune's synthesis.
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An RC series circuit is charged by a voltage E. After a long time the battery is removed and a short circuit is placed across R-C. Then
Answer: B
Direction of current during discharging is opposite to that during charging.
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A sinusoidal voltage has peak to peak value of 100 V. The rms value is
Answer: C
Peak value = 50 V, rms value = 
= 35.35 V.
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System function 
, For a signal sin 2t, the steady state response is
Answer:
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