Exercise: Networks Analysis And Synthesis

Questions for: Networks Analysis And Synthesis

A coil has a resistance of 2 Ω and inductance of 0.1 mH. The applied voltages is suddenly increased from 10 V to 20 V. After steady state condition have reached, the current is
A:
2 A
B:
more than 2 A but less than 4 A
C:
4 A
D:
more than 4 A
Answer: C

The final steady state current in RL circuit depends only on final voltage (i.e., 20 V) and resistance.

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In the network shown in figure, the voltage drops across R2 and R3 are 10 V and 16 V with polarities as shown. The current in R1
A:
is 9 A and directed towards node 0
B:
is 9 A and directed away from node 0
C:
is 9 A but directed of current cannot be found
D:
is impossible to be found
Answer: B

Current through R2 = 5 A towards 0. Current through R3 is 4 A away from node. Total incoming current = 13 A. Current going away from 0 and flowing through R1 = 9 A.

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Assertion (A): Thevenin's theorem and Norton's theorem are dual of each other.

Reason (R): Voltage source can be converted into current source and vice versa.

A:
Both A and R are true and R is correct explanation of A
B:
Both A and R are true and R is not the correct explanation of A
C:
A is true but R is false
D:
A is false but R is true
Answer: A

Thevenin's circuit uses a voltage source and Norton's circuit uses a current source.

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A series RLC circuit has a resonant frequency of 2000 Hz. The maximum voltage across C is likely to occur at a frequency of about
A:
1000 Hz
B:
4000 Hz
C:
2025 Hz
D:
1975 Hz
Answer: C

The maximum voltage across inductance occurs at a frequency slightly above the resonant frequency.

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The electrolyte in a dry cell is completely dry.
A:
True
B:
False
C:
D:
Answer: B

The electrolyte is moist.

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