Electrical Energy Basics

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Questions and Answers

Why is the size of wires and cables used in energy transmission important?

  • To make the transmission lines more visible
  • To reduce cost
  • To minimize power losses and improve efficiency (correct)
  • To increase the voltage

What type of energy is electrical energy a form of?

  • Potential energy
  • Thermal energy
  • Nuclear energy
  • Kinetic energy (correct)

What is the role of substations in the transmission of electricity?

  • To generate electricity
  • To distribute electricity to consumers
  • To convert mechanical energy into electrical energy
  • To increase or decrease voltage (correct)

What happens to the voltage as it travels from the source to consumers?

<p>It decreases for safe levels (D)</p> Signup and view all the answers

What is the purpose of a step-up transformer?

<p>To increase the voltage for efficient transmission (D)</p> Signup and view all the answers

What is the purpose of a step-up transformer?

<p>To increase the voltage of electricity (C)</p> Signup and view all the answers

What is the function of transmission lines?

<p>To support the transmission of electricity over long distances (A)</p> Signup and view all the answers

What is the standard alternating current supply voltage in the Philippines?

<p>220V (A)</p> Signup and view all the answers

What is the purpose of a step-down transformer?

<p>To decrease the voltage for safe household use (C)</p> Signup and view all the answers

What is the role of power generating plants?

<p>To generate electricity by converting mechanical energy into electrical energy (B)</p> Signup and view all the answers

What is the purpose of the Electric Power Grid?

<p>To provide a network for generating, transmitting, and distributing electricity (C)</p> Signup and view all the answers

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