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

Mechanical Engineering : Workshop Technology - Quiz(MCQ)

work is connected to the positive terminal and the electrode holder is earthed

work is connected to the positive terminal and the electrode holder to the negative terminal

work is connected to the negative terminal and the electrode holder is earthed

work is connected to the negative terminal and the electrode holder to the positive terminal

Correct Answer : Option (B) : work is connected to the positive terminal and the electrode holder to the negative terminal

Recently Updated in Workshop Technology Questions

In __________ welding, the weld may be made either from left to right or from right to left.

fore-hand

vertical

back-hand

None of the above

Correct Answer : vertical

In a four high rolling mill, there are four rolls out of which

two are working rolls and two are backing up rolls

three are working rolls and one is backing up roll

one is working roll and three are backing up rolls

All of the above

Correct Answer : two are working rolls and two are backing up rolls

Galvanising is a

zinc diffusion process

process of coating zinc by hot dipping

process used for making thin phosphate coating on steel

None of the above

Correct Answer : process of coating zinc by hot dipping