Workshop Technology
The teeth of hacksaw blade are bent

Alternately towards right and left and every third or fourth left straight
Towards left
May be bent in any direction
Towards right

ANSWER DOWNLOAD EXAMIANS APP

Workshop Technology
The purpose of a riser is to

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

ANSWER DOWNLOAD EXAMIANS APP