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A steel sleeve inserted into a rigid insulated wall. The sleeve fits snugly, and then the temperature is raised by _____

a) Uniform
b) Non uniform
c) σ
d) ΔT

Answer: d
Explanation: A sleeve is a tube of material that is put into a cylindrical bore, for example to reduce the diameter of the bore or to line it with a different material. Sometimes there is a metal sleeve in the bore to give it more strength. The pistons run directly in the bores without using cast iron sleeves.

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