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What is the main purpose of a power transformer in a transmission system?

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Question: What is the main purpose of a power transformer in a transmission system?

Options:

  1. To increase the current
  2. To decrease the current
  3. To increase the voltage for long-distance transmission
  4. To convert AC to DC

Correct Answer: To increase the voltage for long-distance transmission

Solution: 

Power transformers are used to step up the voltage for efficient long-distance transmission, reducing losses due to resistance.

What is the main purpose of a power transformer in a transmission system?

Practice Questions

Q1
What is the main purpose of a power transformer in a transmission system?
  1. To increase the current
  2. To decrease the current
  3. To increase the voltage for long-distance transmission
  4. To convert AC to DC

Questions & Step-by-Step Solutions

What is the main purpose of a power transformer in a transmission system?
  • Step 1: Understand that power transformers are devices used in electrical systems.
  • Step 2: Know that they change the voltage of electricity.
  • Step 3: Learn that 'stepping up' means increasing the voltage.
  • Step 4: Realize that higher voltage allows electricity to travel longer distances.
  • Step 5: Remember that this helps reduce energy losses that happen when electricity moves through wires.
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