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

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

ANSWER DOWNLOAD EXAMIANS APP

Workshop Technology
Lancing is the operation of

Cutting a sheet of metal through part of its length and then bending the cut portion
Cutting a sheet of metal in a straight line along the length
Bending a sheet of metal along a curved axis
Removal of metal to the desired shape from the edge of a plate

ANSWER DOWNLOAD EXAMIANS APP

Workshop Technology
For arc welding

Alternating current with high frequency is used
Alternating current with low frequency is used
Direct current is used
Any one of these

ANSWER DOWNLOAD EXAMIANS APP