Engineering :: Heat Transfer

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If the pipe radius (r) is less than the critical radius (rc) the heat loss from pipe

[A].	remains unaffected with addition of insulation	[B].	decreases with addition of insulation until r = rc and then increases with further addition of insulation
[C].	increases with addition of insulation until r = rc and then decreases with further addition of insulation	[D].	decreases for any addition of insulation

Answer: Option C