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MCQs

Total Questions : 33 | Page 2 of 4 pages
Question 11. In order to get maximum power transfer from a capacitive source, the load must have an impedance that is the complex conjugate of the source impedance.
  1.    True
  2.    False
 Discuss Question
Answer: Option A. -> True
Question 12. Determine VTH for the circuit external to RL in the given figure.
  1.    135 ∠63.4° V
  2.    13.5 ∠63.4° V
  3.    13.5 ∠0° V
  4.    135 ∠0° V
 Discuss Question
Answer: Option B. -> 13.5 ∠63.4° V
Question 13. An equivalent circuit is one that produces the same voltage and current to a given load as the original circuit that it replaces.
  1.    True
  2.    False
 Discuss Question
Answer: Option A. -> True
Question 14. A Thevenin ac equivalent circuit always consists of an equivalent ac voltage source and an equivalent capacitance.
  1.    True
  2.    False
 Discuss Question
Answer: Option B. -> False
Question 15. Referring to the given circuit, find ZTH if R is 15 kΩ and RL is 38 kΩ.
  1.    89.82 ∠-51.3° kΩ
  2.    19.2 ∠-38.3° kΩ
  3.    9.38 ∠-51.3° kΩ
  4.    180 ∠-38.3° kΩ
 Discuss Question
Answer: Option C. -> 9.38 ∠-51.3° kΩ
Question 16. For the circuit given, determine the Thevenin voltage as seen by RL.
  1.    0.574 ∠16.7° V
  2.    5.74 ∠16.7° V
  3.    0.574 ∠-16.7° V
  4.    5.74 ∠-16.7° V
 Discuss Question
Answer: Option D. -> 5.74 ∠-16.7° V
Question 17. Determine the frequency at which the maximum power is transferred from the amplifier to the speaker in the given figure.
  1.    1,027 Hz
  2.    10,270 Hz
  3.    6,330 Hz
  4.    63,330 Hz
 Discuss Question
Answer: Option A. -> 1,027 Hz
Question 18. The superposition theorem is useful for circuit analysis only in ac circuits.
  1.    True
  2.    False
 Discuss Question
Answer: Option B. -> False
Question 19. In order to get maximum power transfer from a capacitive source, the load must
  1.    Have a capacitive reactance equal to circuit resistance
  2.    Have an impedance that is the complex conjugate of the source impedance
  3.    Be as capacitive as it is inductive
  4.    None of the above
 Discuss Question
Answer: Option B. -> Have an impedance that is the complex conjugate of the source impedance
Question 20. In applying the superposition theorem,
  1.    The sources are considered one at a time with all others replaced by their internal impedance
  2.    All sources are considered independently
  3.    All sources are considered simultaneously
  4.    The sources are considered one at a time with all others replaced by their internal resistance
 Discuss Question
Answer: Option A. -> The sources are considered one at a time with all others replaced by their internal impedance

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