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  • Question

  • A 4-bit R/2R digital-to-analog (DAC) converter has a reference of 5 volts. What is the analog output for the input code 0101.


  • Options
  • A. 0.3125 V
  • B. 3.125 V
  • C. 0.78125 V
  • D. ?3.125 V

  • Correct Answer
  • 3.125 V 

    • More questions

    • 1. 

      Connecting the oscilloscope as shown in the given figure will _____.


    • Options
    • A. measure the voltage across the source
    • B. measure the voltage across C1, R2, and C2
    • C. short R1
    • D. short C1, R2, and C2
      • Discuss
    • 2. A differential amplifier has a common-mode gain of 0.2 and a common-mode rejection ratio of 3250. What would the output voltage be if the single-ended input voltage was 7 mV rms?

    • Options
    • A. 1.4 mV rms
    • B. 650 mV rms
    • C. 4.55 V rms
    • D. 0.455 V rms
      • Discuss
    • 3. Removing a bypass capacitor from a common-emitter amplifier circuit will _________ voltage gain and ________ input resistance.

    • Options
    • A. increase, decrease
    • B. decrease, increase
    • C. decrease, decrease
    • D. increase, increase
      • Discuss
    • 4. The phase angle will decrease in a series RL circuit if the inductance is increased.

    • Options
    • A. True
    • B. False
      • Discuss
    • 5. 

      If the pulse source has an internal resistance of 80 Ω in the given circuit, it will take ______ for the output voltage to decrease to zero.


    • Options
    • A. 1 ms
    • B. 1.1 ms
    • C. 1.2 ms
    • D. 2.5 ms
      • Discuss
    • 6. 

      The power rating for the resistor in the given circuit should be at least ______.


    • Options
    • A. 1/4 W
    • B. 1/2 W
    • C. 1 W
    • D. 2 W


      • Discuss
    • 7. 

      If the pulse width were cut in half in the given circuit, the voltage across the resistor would be ______ at the end of the pulse.


    • Options
    • A. 0 V
    • B. 0.36 V
    • C. 0.46 V
    • D. 0.9 V
      • Discuss
    • 8. 

      What is the resonant frequency in the given circuit?


    • Options
    • A. 6.5 kHz
    • B. 53.7 kHz
    • C. 107.4 kHz
    • D. 18.1 MHz
      • Discuss
    • 9. Which of the following is the reference vector for parallel RC circuits?

    • Options
    • A. R
    • B. V
    • C. I
    • D. XC
      • Discuss
    • 10. A parallel resistor's value that changes with age will cause a corresponding change in ______ .

    • Options
    • A. branch current
    • B. branch voltage
    • C. both branch current and branch voltage
    • D. power supply voltage
      • Discuss

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