Textile Engineering > GATE 2012 > Thermal Conductivity
The thermal conductivity of a nonwoven fabric is given by
λ=0.03+0.00005ρ+0.15/ρ
where λ is the thermal conductivity of the fabric in W/(m.K), ρ is the bulk density of the fabric in kg/m³, and ρ ∈[10,200].
Thermal conductivity is minimum when the bulk density is approximately
A
10
B
20
C
55
D
200

Correct : c

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