Exercise: Networks Analysis And Synthesis

Questions for: Networks Analysis And Synthesis

If operator 'a' = 1 ∠120° then (1 + a + a2) =
A:
-a
B:
-a2
C:
1
D:
0
Answer: D
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A network contains linear resistors and ideal voltage sources. If values of all the resistors are doubled, then the voltage across each resistor is
A:
half
B:
doubled
C:
increase by 4 times
D:
no change
Answer: D
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For a series R-L-C circuit tuned at resonant frequency which of the following statements is correct?
A:
The voltage across inductance is greater than applied voltage
B:
The voltage across capacitance is greater than applied voltage
C:
The voltage across both inductance and capacitance is greater than applied voltage
D:
The voltage across both inductance and capacitance is less than applied voltage
Answer: C
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A network has two sources of different frequencies. The only method of analysis which can be used to find current and voltages of different branches is the use of
A:
Kirchoff's laws
B:
Superposition theorem
C:
Thevenin's theorem
D:
Tellegen's theorem
Answer: B
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Open-circuit voltage is the potential difference between two point when the impedance between these points is
A:
zero
B:
infinity
C:
capacitive
D:
reactive
Answer: B
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