Workshop Technology
The instrument used to measure external and internal diameter of shafts, thickness of parts and depth of holes, is

Outside micrometer
Depth gauge micrometer
Inside micrometer
Vernier caliper

ANSWER DOWNLOAD EXAMIANS APP

Workshop Technology
The purpose of a gate is to

Feed the molten metal to the casting in order to compensate for the shrinkage
Delivers molten metal from pouring basin to gate
Act as a reservoir for the molten metal
Delivers molten metal into the mould cavity

ANSWER DOWNLOAD EXAMIANS APP