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Q. What is the logarithmic mean of r1 and r2?

  • (A) (r1 - r2)/ln(r1/r2)
  • (B) (r1 - r2)/ln(r2/r1)
  • (C) (r2 - r1)/ln(r1/r2)
  • (D) (r1 - r2)/-ln(r1/r2)
  • Correct Answer - Option(A)
  • Views: 386
  • Filed under category Heat Transfer
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