logo

CuriousTab

CuriousTab

Discussion

Home ‣ Electronics ‣ Arithmetic Operations and Circuits See What Others Are Saying!
  • Question

  • The fast carry or look-ahead carry circuits found in most 4-bit parallel-adder circuits:


  • Options
  • A. increase ripple delay
  • B. add a 1 to complemented inputs
  • C. reduce propagation delay
  • D. determine sign and magnitude

  • Correct Answer
  • reduce propagation delay 

    • More questions

    • 1. 

      The given circuit is an


    • Options
    • A. RL integrator
    • B. RC differentiator
    • C. RL differentiator
    • D. RC integrator
      • Discuss
    • 2. The main purpose of an instrumentation amplifier is to amplify small signals riding on large common-mode voltages.

    • Options
    • A. True
    • B. False
      • Discuss
    • 3. The symbol hfe is the same as:

    • Options
    • A.
    • B.
    • C. hi-fi
    • D.
      • Discuss
    • 4. The Schmitt trigger is a two-state device that is used for:

    • Options
    • A. pulse shaping
    • B. peak detection
    • C. input noise rejection
    • D. filtering
      • Discuss
    • 5. Convert the decimal number 151.75 to binary.

    • Options
    • A. 10000111.11
    • B. 11010011.01
    • C. 00111100.00
    • D. 10010111.11
      • Discuss
    • 6. What happens to the parallel output word in an asynchronous binary down counter whenever a clock pulse occurs?

    • Options
    • A. The output word decreases by 1.
    • B. The output word decreases by 2.
    • C. The output word increases by 1.
    • D. The output word increases by 2.
      • Discuss
    • 7. With a JFET, a ratio of output current change against an input voltage change is called:

    • Options
    • A. transconductance
    • B. siemens
    • C. resistivity
    • D. gain
      • Discuss
    • 8. ?1.2 V, +15 V, and ?6 V batteries are connected in series. The magnitude of total voltage is _________.

    • Options
    • A. 7.8 V
    • B. 10.2 V
    • C. 22.2 V
    • D. 1.3 V
      • Discuss
    • 9. As frequency decreases in a parallel RL circuit the impedance also decreases.

    • Options
    • A. True
    • B. False
      • Discuss
    • 10. The frequency of a crystal is dependent on how much voltage is applied to activate it.

    • Options
    • A. True
    • B. False
      • Discuss

    Comments

    There are no comments.
Enter a new Comment




Aptitude

Engineering

Programming

Reasoning

Links

Copyright ©CuriousTab. All rights reserved.