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  • Question
  • A half-watt is equal to how many milliwatts?


  • Options
  • A. 5,000 mW
  • B. 5 mW
  • C. 500 mW
  • D. 50 mW

  • Correct Answer
  • 500 mW 


  • More questions

    • 1. In a △-connected source feeding a Y-connected load,

    • Options
    • A. each phase voltage equals the difference of the corresponding load voltages
    • B. each phase voltage equals the corresponding load voltage
    • C. each phase voltage is one-third the corresponding load voltage
    • D. each phase voltage is 60° out of phase with the corresponding load voltage
    • Discuss
    • 2. The reactive voltages, VL and VC, cancel at resonance.

    • Options
    • A. True
    • B. False
    • Discuss
    • 3. Find the node voltage VA.


    • Options
    • A. 6 V
    • B. 12 V
    • C. 4.25 V
    • D. 3 V
    • Discuss
    • 4. The Norton equivalent current is

    • Options
    • A. the current through the load
    • B. the open-current from the source
    • C. the short circuit current
    • D. none of the above
    • Discuss
    • 5. In a certain parallel resonant band-pass filter, the resonant frequency is 14 kHz. If the bandwidth is 4 kHz, the lower frequency

    • Options
    • A. is 7 kHz
    • B. is 10 kHz
    • C. is 12 kHz
    • D. cannot be determined
    • Discuss
    • 6. A signal with a 400 µs period has a frequency of

    • Options
    • A. 250 Hz
    • B. 2,500 Hz
    • C. 25,000 Hz
    • D. 400 Hz
    • Discuss
    • 7. The total power in a certain circuit is 12 W. Each of the four equal-value series resistors making up the circuit dissipates

    • Options
    • A. 12 W
    • B. 48 W
    • C. 3 W
    • D. 8 W
    • Discuss
    • 8. A three-phase generator is connected to three 90 Ω load resistors. Each coil generates 120 V ac. A common neutral line exists. How much current flows through the common neutral line?

    • Options
    • A. 0 A
    • B. 1.33 A
    • C. 3.99 A
    • D. 2.66 A
    • Discuss
    • 9. A balanced Wheatstone bridge consists of an RV of 3,500 Ω, an R2 of 200 Ω, and an R3 of 680 Ω. The value of RUNK is

    • Options
    • A. 680 Ω
    • B. 1,029 Ω
    • C. 200 Ω
    • D. 880 Ω
    • Discuss
    • 10. Electromagnetic induction is the force that produces a magnetic field.

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


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