01. In reverse polarity welding.......
Electrode holder is connected to the positive and work to negative.
02. Equipment is used for arc welding a material by carbon electrode.......
D.C. welding set with straight polarity
03. In arc welding, temperature of the following order may be granted......
5500 degree Celsius.
04. Forge welding is best suited for.......
Wrought iron.
05. Which of the following carbon steel is most weldable.......
0.15 % carbon steel.
06. The temperature of plasma tourch is of the order of.......
33000°C
07. Arc stability is better with.......
AC welding.
08. The melting point of the filler metal in brazing should be above.......
420° c.
09. In resistance welding the electrode material is made of.......
Copper.
10. Which type of electrode is used in submerged arc welding......
Bare rods.
11. Seam welding is.......
Continuous welding.
12. A welding rectifier is used to
convert an AC welding supply into DC Welding supply.
13. The necessity of root gap is the joint used to obtain
complete penetration.
14. The cause of slag inclusion
incorrect electrode motion.
15. The purpose of the rake angle is to
guide the chips away.
16. The purpose of the clearance angle is to
prevent the tool rubbing with the work
17. A sine bar is made of
stabilized chromium Steel.
18. The size of sine bar is specified by the
length.
19. The abrasive used used for honning of non ferrous metal is
silicon carbide.
20. A jig is a special device which
holds supports locates and also guide the cutting tools.
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