logo

CuriousTab

CuriousTab

Analog Electronics problems


  • 1. The load impedance ZL of a CE amplifier has R and L in series. The phase difference between output and input will be

  • Options
  • A. 180°
  • B. 0
  • C. more than 90° but less than 180°
  • D. more than 180° but less than 270°
  • Discuss
  • 2. An amplifier with loop gain A? will be more stable for value of A? as

  • Options
  • A. 0.95
  • B. 0.7
  • C. 1.2
  • D. 1.5
  • Discuss
  • 3. A bridge rectifier circuit has input of 50 Hz frequency. The load resistance is RL and filter capacitance is C. For good output wave shape, the time constant RLC should be at least equal to

  • Options
  • A. 10 ms
  • B. 20 ms
  • C. 50 ms
  • D. 100 ms
  • Discuss
  • 4. In figure The minimum and maximum load currents are
    Electronics and Communication Engineering Analog Electronics: In figure The minimum and maximum load currents are

  • Options
  • A. 0 and 60 mA
  • B. 0 and 120 mA
  • C. 10 mA and 60 mA
  • D. 10 mA and 120 mA
  • Discuss
  • 5. An exponential amplifier has diode in feedback path.

  • Options
  • A. True
  • B. False
  • Discuss
  • 6. Consider the following statements : A clamper circuit

    1. adds or subtracts a dc voltage to a waveform
    2. does not change the waveform
    3. amplifiers the waveform
    Which are correct?

  • Options
  • A. 1, 2
  • B. 1, 3
  • C. 1, 2, 3
  • D. 2, 3
  • Discuss
  • 7. Gain of the amplifier is 'A'. Then the I/P impedance and O/P impedance of the closed loop amplifier shown below would be
    Electronics and Communication Engineering Analog Electronics: Gain of the amplifier is 'A'. Then the I/P impedance and O/P impedance of the closed loop amplifier

  • Options
  • A.
  • B.
  • C.
  • D.
  • Discuss
  • 8. In a CE amplifier the input impedance is equal to the ratio of

  • Options
  • A. ac base voltage to ac base current
  • B. ac base voltage to ac emitter current
  • C. ac emitter voltage to ac collector current
  • D. ac collector voltage to ac collector current
  • Discuss
  • 9. A CB amplifier has re = 6 ?, RL = 600 ? and a = 0.98. The voltage gain is

  • Options
  • A. 100
  • B. 600 x 0.98
  • C. 98
  • D. 6
  • Discuss

First 2 3 4 5