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Home ‣ Electronics ‣ Number Systems and Codes See What Others Are Saying!
  • Question

  • A BCD code that represents each digit of a decimal number by a binary number derived by adding 3 to its 4-bit true binary value is _________.


  • Options
  • A. 9's complement code
  • B. excess-3 code
  • C. 8421 code
  • D. gray code

  • Correct Answer
  • excess-3 code 

    • More questions

    • 1. A compiler is a translation program that converts high-level instructions into a set of binary instructions (machine code) for execution.

    • Options
    • A. True
    • B. False
      • Discuss
    • 2. To ensure a high coefficient of coupling, all fixed transformers are usually wound on a(n) _____________.

    • Options
    • A. EI core
    • B. iron core
    • C. common core
    • D. CI core
      • Discuss
    • 3. Convert 110010012 (binary) to decimal.

    • Options
    • A. 201
    • B. 2001
    • C. 20
    • D. 210
      • Discuss
    • 4. The use of a logic probe may be improved through the use of a(n) ________.

    • Options
    • A. logic clip
    • B. frequency counter
    • C. oscilloscope
    • D. current tracer
      • Discuss
    • 5. The term ______ is derived from a mathematical function in calculus.

    • Options
    • A. differentiator
    • B. integrator
    • C. filter
    • D. voltage-divider
      • Discuss
    • 6. Self-inductance is the property that causes an electromotive force to be produced in a conductor.

    • Options
    • A. True
    • B. False
      • Discuss
    • 7. The output voltage of a typical thermocouple is

    • Options
    • A. less than 100 mV
    • B. greater than 1 V
    • C. Thermocouples vary resistance, not voltage.
    • D. None of the above
      • Discuss
    • 8. The current lags the source voltage in a series RC circuit.

    • Options
    • A. True
    • B. False
      • Discuss
    • 9. 

      In the given circuit, the secondary voltage is in phase with the primary voltage.


    • Options
    • A. True
    • B. False
      • Discuss
    • 10. A source voltage across a capacitor will:

    • Options
    • A. lead the current by 90 degrees
    • B. lead the current by 180 degrees
    • C. lag the current by 90 degrees
    • D. lag the current by 180 degrees
      • Discuss

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