Workshop Technology
In arc welding, the temperature of heat produced by the electric arc is of the order of

4000°C to 5000°C
6000°C to 7000°C
3000°C to 4000°C
5000°C to 6000°C

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Workshop Technology
A progressive limit gauge has

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

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Workshop Technology
Riddle is used for

Smoothing and cleaning out depressions in the mould
Reinforcement of sand in the top part of moulding box
Cleaning the moulding sand
Moistening the sand around the edge before removing pattern

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Workshop Technology
The welding set up is said to have straight polarity, when

Work is connected to the positive terminal and the electrode holder is earthed
Work is connected to the positive terminal and the electrode holder to the negative terminal
Work is connected to the negative terminal and the electrode holder is earthed
Work is connected to the negative terminal and the electrode holder to the positive terminal

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