Workshop Technology
The directional solidification in casting can be improved by using

Chills, chaplets and padding
Chills and chaplets
Chaplets and padding
Chills and padding

ANSWER DOWNLOAD EXAMIANS APP

Workshop Technology
During hot working of metals

All of the listed here
Grain structure of the metal is refined
Mechanical properties are improved due to refinement of grains
Porosity of the metal is largely eliminated

ANSWER DOWNLOAD EXAMIANS APP