Maximum heat dissipation occurs from a steel wire ( = 0.5 W/m. k) of 15 mm diameter exposed to air ( = 20W/m .k), when the insulation thickness is __________ mm.

Maximum heat dissipation occurs from a steel wire ( = 0.5 W/m. k) of 1

1.	Maximum heat dissipation occurs from a steel wire ( = 0.5 W/m. k) of 15 mm diameter exposed to air ( = 20W/m .k), when the insulation thickness is __________ mm.
A.	15
B.	25
C.	10
D.	30
Answer» C. 10

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Maximum heat dissipation occurs from a steel wire ( = 0.5 W/m. k) of 15 mm diameter exposed to air ( = 20W/m .k), when the insulation thickness is __________ mm.

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