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Doctors Medicines MCQs Q&A

  1. secondary transmission
  2. primary transmission
  3. primary distribution
  4. secondary distribution
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1 Answers

Option 3 : primary distribution

Primary distribution system:

  • It is that part of the AC distribution system which operates at voltages somewhat higher than general utilization and handles large blocks of electrical energy than the average low-voltage consumer uses
  • The voltage used for primary distribution depends upon the amount of power to be conveyed and the distance of the substation required to be fed
  • The most commonly used primary distribution voltages are 11 kV, 6.6 kV, and 3.3 kV; Due to economic considerations, primary distribution is carried out by 3-phase, 3-wire system
  • Electric power from the generating station is transmitted at high voltage to the substation located in or near the city; At this substation, voltage is stepped down to 11 kV with the help of a step-down transformer
  • Power is supplied to various substations for distribution or to big consumers at this voltage; This forms the high voltage distribution or primary distribution
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