Workshop Technology
For gas welding, the pressure desired at the welding torch for oxygen is

7 to 103 kN/m²
70 to 280 kN/m²
560 to 840 kN/m²
280 to 560 kN/m²

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Workshop Technology
A progressive limit gauge has

Separate 'Go' and 'Not go' members
'Go' and 'Not go' member on the same side of the gauge
'Go' member at one end and 'Not go' member at the other end
None of the listed here

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Workshop Technology
The diaphragm moulding machine is used to

Ram the sand harder at the back of the mould and softer on the pattern face
Produce uniform packing of sand in the mould
Give uniform sand hardness throughout the mould
Ram the sand harder at the pattern face with decreasing hardness towards the back of the mould

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