NV23139ENGINEERING

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Across
  1. 1. Operation of a motor in a generator mode to feed energy back into the power supply.
  2. 5. The rate at which work is performed.
  3. 6. Electromechanical device that converts mechanical energy to electrical energy in the form of alternating current.
  4. 9. SI derived unit for frequency defined as the number of cycles per second of a periodic function.
  5. 10. Ratio of output power to input power of a device.
  6. 12. The ‘resistance’ of a magnetic circuit.
  7. 14. Amount of speed or voltage change due to load variations.
  8. 16. Set of series connected turns.
  9. 17. The amount of electrical energy stored for a given electric potential.
  10. 21. A material which contains movable electrical charges.
  11. 22. Converter that changes direct electric current to single-phase or poly-phase alternating currents.
  12. 26. An assembly of insulated conducting segments connected to the rotating armature winding.
  13. 28. Property in an electric circuit where a change in the current induces an electromotive force that opposes the change in current.
Down
  1. 2. The materials and parts used to insulate conductive elements of a machine.
  2. 3. The ratio of the voltage to the electric current, a measure of opposition to time-varying electric current in an electric circuit.
  3. 4. Magnetic poles created in a machine by windings.
  4. 7. The resistance to AC current due to capacitance or inductance.
  5. 8. Rotating electric machine used to transform mechanical energy into electric energy.
  6. 11. Defined as the ratio of voltage to current.
  7. 13. A source of the power to the field winding of an electrical machine.
  8. 15. The part of a machine which receives or delivers active power to the external electrical system.
  9. 18. SI base unit of electric current.
  10. 19. The reduction of insulation life due to thermal, voltage and other stress.
  11. 20. Change-over switching in a periodic and automatic manner without interruption of the electric current.
  12. 23. Force required to accelerate a mass of one kilogram at a rate of one meter per second per second.
  13. 24. The rotating part of an electrical machine.
  14. 25. Unit of power. 1hp = 746W
  15. 27. A machine which converts electrical energy into mechanical energy.