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

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

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Manufacturing And Production Technology
Which of the following statement is correct in regard to centreless grinding?

The workpiece is supported throughout its entire length as grinding takes place
All of these
It is a continuous process and adopted for production work
It requires no holding device for the work

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