Exercise: Networks Analysis And Synthesis

Questions for: Networks Analysis And Synthesis

The voltage e0 in the figure
A:
48 V
B:
24 V
C:
36 V
D:
28 V
Answer: D

Apply mesh analysis in both the mesh by converting 8A current source into voltage source.

80 = 18 I1 - 6I2 + 16

1 - 12I2 - 6I2 + 6I1 = - 16

I1 = 4.3A, I2 = 2.3A

Hence e0 = 13I2 13 x 2.3 28 volts.

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An ideal transformer has a turn ratio of 2 : 1. Taking hv side as port 1 and lv side as port 2, transmission parameters of transformer are
A:
B:
C:
D:
Answer: C

For the given data V1 = 2V2 and I1 = 0.5 I2 .

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A circuit is replaced by its Thevenin's equivalent to find current through a certain branch. If VTH = 10 V and RTH = 20 Ω, the current through the branch
A:
will always be 0.5 A
B:
will always be less than 0.5 A
C:
will always be equal to or less than 0.5 A
D:
may be 0.5 A or more or less
Answer: C

Hence less than 0.5 A.

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A two branch parallel tuned circuit has a coil of resistance 100 Ω and inductance 0.005 H in one branch and 10 nF capacitor in the second branch. At resonance frequency is
A:
100 rad/sec
B:
10000 rad/sec
C:
1000 rad/sec
D:
more than 10000 rad/sec
Answer: C

= = 44.67 x 104 rad/sec.

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In figure the voltage drop across the 10 Ω resistance is 10 V. The resistance R
A:
is 6 Ω
B:
is 8 Ω
C:
is 4 Ω
D:
cannot be found
Answer: A

Current supplied by battery = Therefore current through 2Ω resistance is 11 A. Voltage across R = 48 - 10 - 11 x 2 = 16 V.

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