Workshop Technology
The teeth of hacksaw blade are bent

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

ANSWER DOWNLOAD EXAMIANS APP

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

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

ANSWER DOWNLOAD EXAMIANS APP