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Home ‣ Electrical Engineering ‣ Alternating Current and Voltage See What Others Are Saying!
  • Question

  • The conductive loop on the rotor of a simple two-pole, single-phase generator rotates at a rate of 400 rps. The frequency of the induced output voltage is


  • Options
  • A. 40 Hz
  • B. 100 Hz
  • C. 400 Hz
  • D. indeterminable

  • Correct Answer
  • 400 Hz 

    • More questions

    • 1. An ideal voltage source has zero internal resistance.

    • Options
    • A. True
    • B. False
      • Discuss
    • 2. In a series RLC circuit that is operating above the resonant frequency, the current

    • Options
    • A. lags the applied voltage
    • B. leads the applied voltage
    • C. is in phase with the applied voltage
    • D. is zero
      • Discuss
    • 3. A 1.5 kΩ resistor and a coil with a 2.2 kΩ inductive reactance are in series across an 18 V ac source. The power factor is

    • Options
    • A. 564
    • B. 0.564
    • C. 6.76
    • D. 55.7
      • Discuss
    • 4. A sine wave of 15 kHz is changing at a faster rate than a sine wave with a frequency of

    • Options
    • A. 25 kHz
    • B. 12 kHz
    • C. 18 kHz
    • D. 1.3 MHz
      • Discuss
    • 5. What is the approximate resistance of a rheostat if the voltage source is 18 V and the current is 220 mA?

    • Options
    • A. 8.2 kΩ
    • B. 820 Ω
    • C. 8.2 Ω
    • D. 82 Ω
      • Discuss
    • 6. If the peak of a sine wave is 13 V, the peak-to-peak value is

    • Options
    • A. 6.5 V
    • B. 13 V
    • C. 26 V
    • D. none of the above
      • Discuss
    • 7. A galvanometer is a meter that measures small amounts of voltage.

    • Options
    • A. True
    • B. False
      • Discuss
    • 8. An imaginary number is one that exists only in the mind of the mathematician.

    • Options
    • A. True
    • B. False
      • Discuss
    • 9. The voltage at one point in a circuit is always measured relative to another point.

    • Options
    • A. True
    • B. False
      • Discuss
    • 10. If you used 600 W of power for 60 h, you have used

    • Options
    • A. 36 kWh
    • B. 3.6 kWh
    • C. 10 kWh
    • D. 1 kWh
      • Discuss

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