logo

CuriousTab

CuriousTab

Discussion

Home ‣ Electronics and Communication Engineering ‣ Analog Electronics Comments
  • Question

  • If the input to the ideal comparator shown in the figure is a sinusoidal signal of 8 V (peak to peak) without any DC component, then the output of the comparator has a duty cycle of
    If the input to the ideal comparator shown in the figure is a sinusoidal signal of 8 V (peak to peak


  • Options
  • A. 1/2
  • B. 1/3
  • C. 1/6
  • D. 1/12

  • Correct Answer
  • 1/3 

    Explanation
    If the input to the ideal comparator shown in the figure is a sinusoidal signal of 8 V (peak to peak

    If the input to the ideal comparator shown in the figure is a sinusoidal signal of 8 V (peak to peak

    Analog Electronics problems

    Search Results

    • 1. The transistor of following figure in Si diode with a base current of 40 ?A and ICBO = 0, if VBB = 6V, RE = 2 k? and ? = 90, IBQ = 20 ?A then RB =

    • Options
    • A. 200 k?
    • B. 265 k?
    • C. 150 k?
    • D. 100 k?
      • Discuss
    • 2. The efficiency of a full wave rectifier using centre tapped transformer is twice that in full wave bridge rectifier.

    • Options
    • A. True
    • B. False
      • Discuss
    • 3. A half wave diode rectifier has a capacitance input filter. If input voltage is Vm sin ?t, PIV is

    • Options
    • A. Vm
    • B. 2 Vm
    • C. 3 Vm
    • D. 4 Vm
      • Discuss
    • 4. In figure ID = 4 mA. Then VS =

    • Options
    • A. 20 V
    • B. 4.4 V
    • C. 0.4 V
    • D. 0.44 V
      • Discuss
    • 5. In figure v1 = 8 V and v2 = 4 V. Which diode will conduct?

    • Options
    • A. D2 only
    • B. D1 only
    • C. Both D1 and D2
    • D. Neither D1 nor D2
      • Discuss
    • 6. For a system to work, as oscillator the total phase shift of the loop gain must be equal to

    • Options
    • A. 90°
    • B. 45°
    • C. 270°
    • D. 360°
      • Discuss
    • 7. The input impedance of op-amp circuit of figure is

    • Options
    • A. 120 k ohm
    • B. 110 k ohm
    • C. infinity
    • D. 10 k ohm
      • Discuss
    • 8. An RC coupled amplifier has an open loop gain of 200 and a lower cutoff frequency of 50 Hz. If negative feedback with ? = 0.1 is used, the lower cut off frequency will be

    • Options
    • A. about 50 Hz
    • B. about 5 Hz
    • C. about 2.38 Hz
    • D. about 70.5 Hz
      • Discuss
    • 9. For a base current of 10 ?A, what is the value of collector current in common emitter if ?dc = 100

    • Options
    • A. 10 ?A
    • B. 100 ?A
    • C. 1 mA
    • D. 10 mA
      • Discuss
    • 10. Assertion (A): CE amplifier is the most widely used BJT amplifier

      Reason (R): CE amplifier has zero phase difference between input and output


    • Options
    • A. Both A and R are correct and R is correct explanation for A
    • B. Both A and R are correct but R is not correct explanation for A
    • C. A is correct R is wrong
    • D. A is wrong R is correct
      • Discuss

    Comments

    There are no comments.
Enter a new Comment




Aptitude

Engineering

Programming

Reasoning

Links

Copyright ©CuriousTab. All rights reserved.