The Correct Formula for Transformer Window space factor kW is

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The Correct Formula for Transformer Window space factor kW is:

  1. kW = 50/(30 + kVhv)
  2. kW = 10/(30 + kVhv)
  3. kW = 10/(30 – kVhv)
  4. kW = 50/(30 – kVhv)

Correct answer: 2. kW = 10/(30 + kVhv)

Explanation:

The Mathematical Formula for Transformer Window space factor kW is:

kW = 10/(30 + kVhv)

Where kVhv is the voltage of high voltage winding of transformer

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