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

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

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Manufacturing And Production Technology
Shrinkage allowance on pattern is provided to compensate for shrinkage when

The metal changes from liquid to solid state at freezing temperature
The temperature of liquid metal drops from pouring to freezing temperature
The temperature of solid phase drops from freezing to room temperature
The temperature of metal drops from pouring to room temperature

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Manufacturing And Production Technology
Trepanning is an operation of

Producing a hole by removing metal along the circumference of a hollow cutting tool
Sizing and finishing a small diameter hole
Making a cone-shaped enlargement of the end of a hole
Smoothing and squaring the surface around a hole

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