Methods of Producing EMF Flashcards Preview

Electrical Theory Period 1 SAIT-Alberta > Methods of Producing EMF > Flashcards

Flashcards in Methods of Producing EMF Deck (10)
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1

What are 6 methods of producing EMF?

  • Chemical
  • Heat
  • Pressure
  • Light
  • Magnetic
  • Static

2

What is the piezoelectric effect?

When pressure is applied to certain objects a voltage is developed across the object.

3

What is the Seebeck effect?

A heat applied to two dissimilar metals fused together developes a voltage difference between the junction of fused metals and a separated "cold" connection to a circuit.

4

Batteries are considered a constant "_____" source.

Voltage.

5

What type of fuel cell is the most successsful?

Cells which use hydrogen and oxygen.

6

Emf generated through thermocouples is generally used for?

Temperature controls.

7

The piezoelectric effect only occurs in "_____" materials.

What is the most common material used which experiences this phenomenon?

Non conductive.

Quartz.

8

What are the main advantages of solar generation?

What is the main disadvantage?

  • No moving parts
  • Little maintenance
  • No waste.

 

  • High cost.

9

What is the least common method of producing EMF?

Electrostatics. (triboelectric charging)

10

A Van de graff generator is known as a constant "_____" device.

Current.