Transistor Tuned Amplifiers

11. At series or parallel resonance, the circuit power factor is __________

  1. 0
  2. 5
  3. 1
  4. 8

Correct answer: (C)
1

12. At series resonance, the circuit offers __________ impedance

  1. Zero
  2. Maximum
  3. Minimum
  4. None of the above

Correct answer: (C)
Minimum

13. At series resonance, the net reactive component of circuit current is __________

  1. Zero
  2. Inductive
  3. Capacitive
  4. None of the above

Correct answer: (A)
Zero

14. At series resonance, the phase angle between applied voltage and circuit is __________

  1. 90o
  2. 180o
  3. 0o
  4. None of the above

Correct answer: (C)
0o

15. At series resonance, voltage across L is __________ voltage across C

  1. Equal to but opposite in phase to
  2. Equal to but in phase with
  3. Greater than but in phase with
  4. Less than but in phase with

Correct answer: (A)
Equal to but opposite in phase to

16. Double tuned circuits are used in __________ stages of a radio receiver

  1. IF
  2. Audio
  3. Output
  4. None of the above

Correct answer: (A)
IF

17. For frequencies above the resonant frequency, a parallel LC circuit behaves as a __________ load

  1. Capacitive
  2. Resistive
  3. Inductive
  4. None of the above

Correct answer: (A)
Capacitive

18. For frequencies above the resonant frequency, a series LC circuit behaves as a __________ load

  1. Resistive
  2. Inductive
  3. Capacitive
  4. None of the above

Correct answer: (B)
Inductive

19. For frequencies below resonant frequency, a series LC circuit behaves as a __________ load

  1. Resistive
  2. Capacitive
  3. Inductive
  4. None of the above

Correct answer: (B)
Capacitive

20. For frequencies below the resonant frequency , a parallel LC circuit behaves as a __________ load

  1. Inductive
  2. Resistive
  3. Capacitive
  4. None of the above

Correct answer: (A)
Inductive

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