Workshop Technology
In welding copper alloys with TIG arc welding

Alternating current is used
Direct current with reversed polarity is used
Any one of the listed here
Direct current with straight polarity is used

ANSWER DOWNLOAD EXAMIANS APP

Workshop Technology
In permanent mould casting method

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
None of these
Molten metal is poured and allowed to solidify while the mould is revolving
Molten metal is forced into mould under high pressure

ANSWER DOWNLOAD EXAMIANS APP
MORE MCQ ON Workshop Technology