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Home ‣ Electronics ‣ Alternating Current vs Direct Current Comments
  • Question

  • What is the period of a 16 MHz sine wave?


  • Options
  • A. 196 ns
  • B. 62.5 ns
  • C. 31.25 ns
  • D. 19.9 ns

  • Correct Answer
  • 62.5 ns 

    • Alternating Current vs Direct Current problems

    Search Results

    • 1. How long would it take to transmit an electromagnetic wave to a receiving antenna 1,000 miles away?

    • Options
    • A. 5.38 ms
    • B. 10.8 ms
    • C. 53.8 ms
    • D. 108 ms
      • Discuss
    • 2. A sine wave reaches maximum positive voltage at:

    • Options
    • A. 90°
    • B. 0°
    • C. ?90°
    • D. 360°
      • Discuss
    • 3. What is the waveform period of a square wave signal that horizontally covers 3 major divisions per cycle? (time/cm = 50 ms)

    • Options
    • A. 50 ms
    • B. 100 ms
    • C. 150 ms
    • D. 200 ms
      • Discuss
    • 4. Which percentages of full-amplitude rise time are used for a pulse wave?

    • Options
    • A. 0 to 50 percent
    • B. 0 to 100 percent
    • C. 5 to 95 percent
    • D. 10 to 90 percent
      • Discuss
    • 5. What does the CRT oscilloscope display?

    • Options
    • A. voltage and period
    • B. current and frequency
    • C. rms voltage and current
    • D. frequency and voltage
      • Discuss
    • 6. What is the peak-to peak voltage of a 56 Vrms ac voltage?

    • Options
    • A. 158 V
    • B. 164 V
    • C. 82 V
    • D. 79 V
      • Discuss
    • 7. To operate properly, a transistor's base-emitter junction must be forward biased with reverse bias applied to which junction?

    • Options
    • A. collector-emitter
    • B. base-collector
    • C. base-emitter
    • D. collector-base
      • Discuss
    • 8. Voltage-divider bias provides:

    • Options
    • A. an unstable Q point
    • B. a stable Q point
    • C. a Q point that easily varies with changes in the transistor's current gain
    • D. a Q point that is stable and easily varies with changes in the transistor's current gain
      • Discuss
    • 9. A transistor has a of 250 and a base current, IB, of 20 µ A. The collector current, IC, equals:

    • Options
    • A. 500 µ A
    • B. 5 mA
    • C. 50 mA
    • D. 5 A
      • Discuss
    • 10. When a silicon diode is forward biased, what is VBE for a C-E configuration?

    • Options
    • A. voltage-divider bias
    • B. 0.4 V
    • C. 0.7 V
    • D. emitter voltage
      • Discuss

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