Why is voltage drop analysis important in an AC distribution system?

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  1. To increase power losses
  2. To reduce the system frequency
  3. To increase resistance in the conductors
  4. To ensure voltage levels remain within acceptable limits

Answer (Detailed Solution Below)

Option 4 : To ensure voltage levels remain within acceptable limits
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Explanation

  • Voltage drop analysis helps ensure the end-user receives the correct voltage needed for safe and reliable operation of electrical devices.
  • Regulatory standards typically specify that the voltage at a user’s point of connection should not deviate more than ±5% for most systems (e.g., from 230V nominal, the range would be 218.5V to 241.5V).
  • Excessive voltage drop can cause equipment malfunction or failure. Therefore, analyzing and minimizing voltage drop helps maintain power quality and protect end-user equipment.
  • Also, engineers can size conductors correctly, reduce losses, and maintain voltage within this acceptable range.

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