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5 Written questions

5 Multiple choice questions

  1. A device that can increase or decrease the voltage of an alternating current.
  2. the force that causes magnets to pull on objects that are made of certain metals, such as iron
  3. a large wheel with blades that rotates and provides mechanical energy to a generator
  4. a device that contains a rotating electromagnet that changes electrical energy to mechanical energy
  5. The process by which moving a wire through a magnetic field produces an electric current

5 True/False questions

  1. galvanometera machine that changes mechanical energy into electric power

          

  2. electromagneta device that contains a rotating electromagnet that changes electrical energy to mechanical energy

          

  3. magnetic polesA group of atoms whose magnetic fields are aligned

          

  4. magnetic fieldthe lines of force surrounding a permanent magnet or a moving charged particle

          

  5. commutatorattached to the armature in a motor; changes the direction of the electric current

          

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