Workshop Technology
Swab is used for

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

ANSWER DOWNLOAD EXAMIANS APP

Workshop Technology
For arc welding

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

ANSWER DOWNLOAD EXAMIANS APP

Workshop Technology
Spot welding is used for welding

Lap joints in plates having thickness above 3 mm
Lap joints in plates having 0.025 mm to 1.25 mm thickness
Butt joints in plates having 0.025 mm to 1.25 mm thickness
Butt joints in plates having thickness above 3 mm

ANSWER DOWNLOAD EXAMIANS APP