For a motor load having a capacity of less than 10 HP, the demand factor should be __________.

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MPPGCL JE Electrical 28 April 2023 Shift 2 Official Paper
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  1. 0.1
  2. 0.25
  3. 0.5
  4. 0.75

Answer (Detailed Solution Below)

Option 4 : 0.75
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Demand factor

\(Demand \space factor={Maximum \space demand\over Connected\space load}\)

  • For smaller motors (<10 HP), not all motors operate at full load continuously, so the demand factor is less than 1.
  • A typical range for small motor loads is 0.75 to 0.85, meaning only 75% to 85% of the connected load is expected to operate at peak demand.
  • Thus, the demand factor for motors below 10 HP should generally be around 0.75.
     

Demand factor for various loads:

  1. Residential load (over 1 kW) = 0.5
  2. Residential load (< 0.25 kW) = Less than 0.5
  3. Motor Load (< 10 HP) = 0.75
  4. Commercial load (for Restaurants) = 0.7
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