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  • Question
  • Waveforms are graphs that show:


  • Options
  • A. frequency on the vertical axis and amplitude on the horizontal axis
  • B. amplitude on the vertical axis and frequency on the horizontal axis
  • C. amplitude on the vertical axis and the passage of time on the horizontal axis
  • D. the passage of time on the vertical axis and amplitude on the horizontal axis
  • E. None of the above

  • Correct Answer
  • amplitude on the vertical axis and the passage of time on the horizontal axis 


  • Electronic Principles problems


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    • 1. Which one of the following statements is true for current flowing in a series circuit?

    • Options
    • A. The amount of current flow through each part of a series circuit can be different, depending on the resistance of each part and the amount of voltage applied to it
    • B. The total current in a series circuit is equal to the sum of the currents flowing through the individual components in the circuit
    • C. The same current flows through every part of a series circuit
    • D. The total current in a series circuit is equal to the total voltage multiplied by the total resistance
    • E. None of the above
    • Discuss
    • 2. When a transistor is cut off or saturated, transistor _____ have almost no effect

    • Options
    • A. wave
    • B. variations
    • C. stage
    • D. circuits
    • E. None of the above
    • Discuss
    • 3. The binary number 1100 0101 has _____ bytes

    • Options
    • A. 1
    • B. 2
    • C. 4
    • D. 8
    • E. None of the above
    • Discuss
    • 4. Addition of 102 and 112 is

    • Options
    • A. 1002
    • B. 1012
    • C. 1112
    • D. 1102
    • E. None of the above
    • Discuss
    • 5. Express -7 as 16-bit signed binary numbers.

    • Options
    • A. 0000 0000 0000 0111
    • B. 1000 0000 0000 0111
    • C. . 0111 0000 0000 0001
    • D. 0111 0000 0000 0000
    • E. None of the above
    • Discuss
    • 6. The knee voltage of a diode is approximately equal to the

    • Options
    • A. Applied voltage
    • B. Barrier potential
    • C. Breakdown voltage
    • D. Forward voltage
    • E. None of the above
    • Discuss
    • 7. In a pure inductor:

    • Options
    • A. ac current leads the voltage by 90 degree
    • B. ac current and voltage are exactly in phase
    • C. ac current lags the voltage by 90 degree
    • D. ac current is converted to dc voltage
    • E. None of the above
    • Discuss
    • 8. In an intrinsic semiconductor, the number of free electrons

    • Options
    • A. Equals the number of holes
    • B. Is less than the number of holes
    • C. Is greater than the number of holes
    • D. Impossible to say
    • E. None of the above
    • Discuss
    • 9. Which one of the following statements is true for the currents in a parallel RC circuit?

    • Options
    • A. The total current is equal to the sum of the currents for the resistance and capacitance
    • B. The current always has the same amplitude and phase for every part of the circuit
    • C. The total current is less than the sum of the currents for the resistance and capacitance
    • D. The total current. is greater than the sum of the currents for the resistance and capacitance
    • E. None of the above
    • Discuss
    • 10. When the graph of current versus voltage is a straight line, the device is referred to as

    • Options
    • A. Active
    • B. Linear
    • C. Nonlinear
    • D. Bipolar
    • E. None of the above
    • Discuss


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