Welding
Coated Electrodes
65. Which weld defect occurs on a lap fillet joint due to improper weaving of the electrode in the covering/final run?
A. crack
B. undercut
C. lack of fusion
D. edge of plate melted off
66. A lap fillet weld has uneven bead height. What is the cause for this defect?
A. use of high current
B. low welding travel speed
C. use of wrist movement for the electrode weaving
D. high welding travel speed
67. The coating factor used to make medium coated electrode is…
A. 1.25 to 3
B. 1.4 to 1.5
C. 1.6 to 2.2
D. above 2.2
68. Which type of coated electrodes are used for general purpose welding and for training purposes in ITIs?
A. basic coated
B. iron powder
C. cellulosic
D. rutile
69. Maintaining a key hole and use of proper root gap in a single V butt joint will ensure…
A. reducing the arc blow effect
B. faster metal deposition
C. proper root penetration
D. proper reinforcement
70. At what angle the electrode is to be held with the bottom surface of the joint in horizontal position?
A. 60◦ to 70◦
B. 70◦ to 80◦
C. 80◦ to 90◦
D. 90◦ to 100◦
71. Upto which temperature a moisture affected (wet) electrode is to be heated for one hour?
A. 50 to 100◦C
B. 110 to 150◦C
C.160 to 200◦C
D. 200 to 250◦C
72. The purpose of presenting the plate while welding a T fillet joint is to…
A. get good root penetration
B. avoid crater defect
C. control distortion
D. control arc blow
