Module 3206

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Across
  1. 4. A measure of force that causes an object, such as a motor shaft, to rotate.
  2. 6. Voltage: The value of AC voltage that will produce as much power when connected across a load as an equivalent amount of DC voltage. Also known as root-mean-square (RMS) voltage.
  3. 7. A device that generates alternating current through conductors rotating in a magnetic field.
  4. 9. The unit of measure for the frequency of alternating current. One Herz equals one cycle per second.
  5. 10. Motors Electric motors that operate through induction.
  6. 11. Current The maximal, short-lived current drawn by an inductive electrical device when first energized.
  7. 12. The rotating component of a generator.
  8. 14. The movable contact surface on an electric generator or motor.
  9. 15. The generation of a current in a conductor by placing it in a moving magnetic field.
  10. 16. The rotating component of an induction motor.
  11. 17. Ratio The ratio between the number of turns in a transformer’s primary winding and a secondary winding.
  12. 18. Drop A decrease of electrical potential along the path of a current flowing in an electrical circuit, often caused by insufficient wire sizing for circuit length and poor wiring connections.
  13. 20. The repetitive and/or periodic variation of some measure in relation to a central point.
  14. 21. Imbalance For a three-phase power supply, the maximum deviation of the current in any phase from the average current in the three phases, divided by the average current. It is generally expressed as a percentage.
Down
  1. 1. The maximum height and depth reached by the sine wave in a cycle, and the point on the wave at which the highest voltage is being generated.
  2. 2. The number of complete cycles of an alternating current, sound wave, or vibrating object that occur over predetermined time.
  3. 3. imbalance For a three-phase power supply, the maximum deviation of the voltage of any phase from the average voltage of the three phases, divided by the average voltage. It is generally expressed as a percentage.
  4. 5. Formed through compression, such as a connector on the end of an electrical conductor.
  5. 8. A control device consisting of a magnetic coil and one or more sets of contacts used as switching devices in high-voltage, high-current circuits, such as those serving compressors.
  6. 9. A unit of measure for power equal to 550 foot-pounds per second, or 746 watts.
  7. 13. The stationary portion of a motor, primarily consisting of the windings.
  8. 15. Transformer A transformer with a one-to-one turn ratio, used to isolate electrical circuits or prevent electrical interference.
  9. 19. Wave A waveform that displays periodic oscillations in the generation of AC ower.