Manufacturing And Production Technology
In an interchangeable assembly, shafts of size 25.000 -0.0100⁺⁰∙⁰⁴⁰ mm mate with holes of size 25.000 -0.010⁺⁰∙⁰²⁰ mm. The maximum possible clearance in the assembly will be

30 microns
10 microns
20 microns
60 microns

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Manufacturing And Production Technology
During normalizing process of steel, the specimen is heated

Between the upper and lower critical temperature and cooled in furnace.
Between the upper and lower critical temperature and cooled in still air.
Above the upper critical temperature and cooled in still air.
Above the upper critical temperature and cooled in furnace.

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