Exercise: Circuit Theorems In Ac Analysis

Questions for: Circuit Theorems In Ac Analysis

Referring to the given circuit, L

A:
must be in parallel with RL
B:
must be placed in parallel with VS
C:
must have a reactance equal to XC
D:
has no effect on the result
Answer: D
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The Thevenin equivalent voltage is
A:
equal to the source voltage
B:
the same as the load voltage
C:
the open circuit voltage
D:
none of the above
Answer: C
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If two currents are in the same direction at any instant of time in a given branch of a circuit, the net current at that instant
A:
is zero
B:
is the sum of the two currents
C:
is the difference between the two currents
D:
cannot be determined
Answer: B
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In applying the superposition theorem,
A:
the sources are considered one at a time with all others replaced by their internal impedance
B:
all sources are considered independently
C:
all sources are considered simultaneously
D:
the sources are considered one at a time with all others replaced by their internal resistance
Answer: A
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Referring to the given circuit, find ZTH if VS is 180° V.

A:
9.82 –51.3° k
B:
9.38–51.3° k
C:
180 –38.3° k
D:
19.2 –38.3° k
Answer: B
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