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What is the significance of the 'surge impedance' of a transmission line?

Practice Questions

Q1
What is the significance of the 'surge impedance' of a transmission line?
  1. It determines the maximum voltage
  2. It affects the line's power factor
  3. It influences the reflection of waves
  4. It indicates the thermal limits

Questions & Step-by-Step Solutions

What is the significance of the 'surge impedance' of a transmission line?
  • Step 1: Understand that a transmission line carries electrical signals from one point to another.
  • Step 2: Learn that 'surge impedance' is a property of the transmission line that affects how electrical signals travel.
  • Step 3: Recognize that when an electrical wave reaches a change in the line (like a different type of cable), some of the wave can reflect back.
  • Step 4: Realize that the amount of reflection depends on the surge impedance; if the impedance matches, less reflection occurs.
  • Step 5: Conclude that managing surge impedance is important for efficient transmission and minimizing signal loss.
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