Workshop Technology
The teeth of hacksaw blade are bent

Towards left
May be bent in any direction
Towards right
Alternately towards right and left and every third or fourth left straight

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Workshop Technology
In a simple die

Two or more operations are performed simultaneously at the single stroke of the ram
Both cutting and non-cutting operations are performed at one station of the press in every stroke of the ram
Two or more cutting operations are performed at one station of the press in every stroke of the ram
None of the listed here

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Workshop Technology
Piercing is an operation of cutting

A cylindrical hole in a sheet of metal by the punch and the die
A number of holes evenly spaced in a regular pattern on a sheet of metal
A hole (other than cylindrical) in a sheet of metal by the punch and the die
A flat sheet to the desired shape

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