Manufacturing And Production Technology
Jigs are used

None of these
For holding the work in milling, grinding, planing or turning operations
To check the accuracy of workpiece
For holding and guiding the tool in drilling, reaming or tapping operations

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Manufacturing And Production Technology
In ultrasonic machining, the metal is removed by

Maintaining an electrolyte between the work and tool in a very small gap between the two
Direct contact of tool with the work
Using abrasive slurry between the tool and work
Erosion caused by rapidly recurring spark discharges between the tool and work

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Manufacturing And Production Technology
The strength of a brazed joint

Increases up to certain gap between the two joining surfaces beyond which it decreases
Increases with increase in gap between the two joining surfaces
Decreases up to certain gap between the two joining surfaces beyond which it increases
Decreases with increase in gap between the two joining surfaces

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Manufacturing And Production Technology
In a shaper, the length of stroke is increased by

Decreasing the length of the slot in the slotted lever
Increasing the length of the arm
Decreasing the centre distance of bull gear and crank pin
Increasing the centre distance of bull gear and crank pin

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