Write a summary the advantages of AC over DC for power transmission. Summarize the conflict between Edison and Westinghouse.
Section One Generators and Power distribution.
Context:
Electricity authorities use high-voltage transmission lines and transformers to distribute electricity to homes and industries around each state. Voltages can be as high as 5 x 105 volts from power stations but by the time this reaches homes, the electricity has been transformed to 240 volts. While it is relatively economical to generate electric power at a steady rate, there are both financial and environmental issues that should be considered when assessing the long-term impact of supplying commercial and household power.
- describe the differences between AC and DC generators
- discuss the energy losses that occur as energy is fed through transmission lines from the generator to the consumer
- assess the effects of the development of AC generators on society and the environment
- § gather secondary information to discuss advantages/disadvantages of AC and DC generators and relate these to their use
§ analyse secondary information on the competition between Westinghouse and Edison to supply electricity to cities
§ gather and analyse information to identify how transmission lines are:
– insulated from supporting structures– protected from lightning strikes
Section Two Exam Practice
Exam Practice answer these questions.
Compare Centripal Force and Kinetic Science.
- Copy this question, Highlight the verb, Write Heading Comparison table, Write in Header, Property, Centripital, Kinetic, Comparison.
Discuss the statement "Michelson Morley believed in Aether and the Scientific Method. Their experiments lead to the abandonment of Aether"
- copy this question, highlight verb, write heading "Discussion", State what happened, comment on the statement.
Explain how the relativistic space travel could allow us to reach Stars 1000Ly away but there is little prospect of reaching these speeds.
-copy question, highlight verb, Write heading explanation, Write the time dilation equation, explain with an example, Write the mass dilation equation and the Energy equivalence equation, with an example. Finish
Compare Generators and DC Motors.
-copy and highlight, produce a table.
