Transistor Tuned Amplifiers

1. A class C amplifier always drives __________ load

  1. A pure resistive
  2. A pure inductive
  3. A pure capacitive
  4. A resonant tank

Correct answer: (D)
A resonant tank

2. A resonant circuit contains __________ elements

  1. R and L only
  2. R and C only
  3. Only R
  4. L and C

Correct answer: (D)
L and C

3. A tuned amplifier is generally operated in __________ operation

  1. Class A
  2. Class C
  3. Class B
  4. None of the above

Correct answer: (B)
Class C

4. A tuned amplifier is used in __________ applications

  1. Radio frequency
  2. Low frequency
  3. Audio frequency
  4. None of the above

Correct answer: (A)
Radio frequency

5. A tuned amplifier uses __________ load

  1. Resistive
  2. Capacitive
  3. LC tank
  4. Inductive

Correct answer: (C)
LC tank

6. At parallel resonance, the line current is __________

  1. Minimum
  2. Maximum
  3. Quite large
  4. None of the above

Correct answer: (A)
Minimum

7. At parallel resonance, the net reactive component circuit current is __________

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

Correct answer: (B)
Zero

8. At parallel resonance, the phase angle between the applied voltage and circuit current is __________

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

Correct answer: (C)
0o

9. At parallel resonance, the ratio L/C is __________

  1. Very large
  2. Zero
  3. Small
  4. None of the above

Correct answer: (A)
Very large

10. At series or parallel resonance, the circuit behaves as a __________ load

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

Correct answer: (B)
Resistive

Previous
Page 1 of 4
Next
Copyright © EngineeringMCQ.com