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

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

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Workshop Technology
In permanent mould casting method

None of these
Molten metal is forced into mould under high pressure
Molten metal is poured and allowed to solidify while the mould is revolving
Molten metal is poured in a metallic mould, retained in the mould long enough for the outer skin to solidify and finally mould is turned over to remove molten metal still in molten condition

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