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The critical radius is the insulation radius at which the resistance...

This question belongs to Mechanical Engineering Heat And Mass Transfer
Heat and Mass Transfer
?

The critical radius is the insulation radius at which the resistance to heat flow is

Answer & Solution
Correct Answer: Option B
It is the radius of insulation before heat transfer increases and after heat transfer decreases.
The critical radius is the insulation radius at which the resistance to heat flow is Minimum
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