Chapter 12 Science

Card Set Information

Author:
Tarun.S
ID:
288095
Filename:
Chapter 12 Science
Updated:
2014-11-04 11:38:26
Tags:
Ms Day Science
Folders:

Description:
Science
Show Answers:

Home > Flashcards > Print Preview

The flashcards below were created by user Tarun.S on FreezingBlue Flashcards. What would you like to do?


  1. Direct Current (DC)
    DC (direct current) is the unidirectional flow or movement of electric charge. 

    • -It only flows in one direction unlike AC current 
    • Related Terms:

    • -Alternating current (AC)
    • -Transformers
  2. Alternating Current (AC)
    AC is an electric current that reverses its direction many times a second at regular intervals

    • -It flows in different direction unlike DC 
    • Related Terms:

    • -Direct Current (DC)
    • -Transformers
  3. Transformer
    An apparatus for reducing or increasing the voltage of an alternating current.

    • -Used for distributing electricity to homes
    • -Used for transportation of energy in general by Alternating Current 
    • - Used to decrease the voltage 
    • -Used to increase voltage

    • Related Terms:
    • - Alternating Current
  4. Circuit Breaker
    An automatic device for stopping the flow of current in an electric circuit as a safety measure.

  5. Fuse
    A safety device consisting of a strip of wire that melts and breaks an electric circuit if the current exceeds a safe level.

  6. Electrical power
    Electric power is the rate at which electric energy is transferred by an electric circuit

    • Related Terms:
    • -Watt
  7. Watt (W)
    The unit is defined as joule per second and can be used to express the rate of energy conversion or transfer with respect to time.

    • Related Terms:
    • -Joule
  8. Kilowatt (kW)
    The kilowatt hour, or kilowatt-hour, (symbol kWh, kW. · h, or kW h) is a unit of energy equal to 1,000 watt-hours, or 3.6 megajoules.

    • Related Terms:
    • -Watt
    • -Joules
  9. Electrical energy
    Electrical energy can be used to move charged particles through a wire from a power plant to our homes and businesses.

     - energy made available by the flow of electric charge through a conductor

    Related Terms:
  10. Kilowatt-hour (kW∙h)
    • One kilowatt-hour is defined as the energy consumed by power consumption of 1kW during 1 hour:
    • 1 kWh = 1kW · 1h
    • One kilowatt-hour is equal to 3.6·106 joules:
    • 1 kWh = 3.6·106 J
    • The energy E in kilowatt-hour (kWh) is equal to the power P in kilowatts (kW), times the time t in hours (h).E(kWh) = P(kW) · t(h)
  11. EnerGuide label
    The EnerGuide label is a tool to help you make an energy-wise choice when buying a new appliance. It shows how much energy appliances consume in a year of normal service (measured in kWh)

    • Related Terms:
    • -Kilowatt-hour
  12. Smart Meter
    A smart meter is usually an electronic device that records consumption of electric energy in intervals of an hour or less.

    -All houses and building have these in Kitchener 

    • Related Terms:
    • -Kilowatt-hour
  13. Time of Use Pricing
    Time-based pricing includes fixed time-of use rates for electricity.

    • Related Terms:
    • -Kilowatt-hour
    • -smart meter
  14. Phantom load
    Phantom load, or leaking electricity, refers to the electric power consumed by electronic and electrical appliances while they are switched off or in a standby mode.

    -Applies to anything that has a clock on it or some kind of energy consumer like an LED
  15. Efficiency
    Energy efficiency is a way of managing and restraining the growth in energy consumption.

    • Related terms:
    • -Smart Meters
  16. Base load
    The constant or permanent load on a power supply.

    • -Minimum requirement 
    • -Nuclear power plants supply base load
    • -Hydroelectric
  17. Hydroelectric power generation
    Hydropower is electricity generated using the energy of moving water.

    -Also supplies base load

What would you like to do?

Home > Flashcards > Print Preview