Exercise: Networks Analysis And Synthesis

Questions for: Networks Analysis And Synthesis

An AC circuit has two branches in parallel. The current in one branch is 5 A. Then the current source
A:
must be less than 5 A
B:
must be more than 5 A
C:
may be equal or more or less than 5 A
D:
5 A
Answer: C

5 A current may be (say) 3 + j 4A. The current in the other branch is x Âą jy. The total current is (3 + x) + (4 Âą y). This may be 5A or more or less.

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A practical Parallel resonant circuit has a coil in Parallel with a 0.14 Ξf capacitor. The coil has an inductance of 1 mH and a resistance of 10 ohms. The Q of the circuit is
A:
1000
B:
100
C:
10
D:
1
Answer: C

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A series circuit has R = 5 ÎĐ and C = 10 ΞF. At t = 0 it is switched on to a 10 V dc battery. The maximum current in the circuit is
A:
2 A
B:
1 A
C:
106A
D:
10 ΞA
Answer: A

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The frequency at which maximum voltage occurs across the inductance in R-L-C series circuit is
A:
B:
C:
D:
Answer: D
No answer description is available. Let's discuss.
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Consider the following from the point of view of possible realization as driving point impedances using passive elements
Among these
A:
1, 2, 4 are realisable
B:
1, 2, 3 are realisable
C:
3, 4 are realisable
D:
none is realisable
Answer: B

In realisable functions degrees of numerator and denominator can differ by a maximum of 1.

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