Topic 7: From Power Plant to Home

Question 1

Power Grid

Answer 1

Highway system for electrical energy
- Delivers electricity from generating station to home

Question 2

Transformers

Answer 2

• Used to step up voyages for effective transmissions over long distances
• Other transformers will step down electrical charge for houses and factories

Question 3

Circuit Breaker

Answer 3

• Safty device
• will shut out all power coming to home

Question 4

Fuse Box

Answer 4

• metallic conductor that melts when excessive current heats it up
• Circut is open till fuse it replaced

Question 5

Branch Circut

Answer 5

• supplies power to one or more wall plugs or lights connected in paralell by cables in house walls

Question 6

Electric Cable Wires

Answer 6

• While insulated wire (neutral) (live)
• Black insulated wire (hot) (live)
• Ground wire (bare copper or covered in green insulation) reduces shock currents by channeling electric current to the ground

Question 7

Electrical Code

Answer 7

Set of standereds

Question 8

Digital Electronic Tecnolgy

Answer 8

• machines that process numerically coded information

Question 9

Binary Code

Answer 9

• sequence of on and off signals
• Used to represent numbers and letters
  Circuits may contain switches that can process information

Question 10

Transistors

Answer 10

• Electric switches in modern devices

Question 11

Power

Answer 11

• Measured in watts
• Pe/t

Energy Jules
Time in seconds

Efficecney useful energy input
Total energy input
Smaller number on top

Question 12

Incandescent Bulbs

Answer 12

5 percent efficient
Least efficient

Question 13

Can operate at very high temps
15 percent efficient