221. In spot welding, the spacing between two spot weld should not be less than
d
1.5 d
3 d
6 d
✅ The correct answer is option C.
Workshop Technology MCQs
222. For arc welding
alternating current with high frequency is used
alternating current with low frequency is used
direct current is used
any one of these
✅ The correct answer is option C.
223. The metal is subjected to mechanical working for
refining grain size
reducing original block into desired shape
controlling the direction of flow lines
all of these
✅ The correct answer is option D.
224. Linde welding uses
neutral flame and right-ward technique
oxidising flame and left-ward technique
neutral flame and left-ward technique
carburising flame and
✅ The correct answer is option D.
225. Hot piercing is extensively used for making bolts and nuts.
Yes
No
✅ The correct answer is option B.
226. The difference between the upper limit and lower limt of a dimension is called
nominal size
basic size
actual size
tolerance
✅ The correct answer is option D.
227. The cold chisels are made by
drawing
rolling
piercing
forging
✅ The correct answer is option D.
228. The cross-section of a chisel is usually
rectangular
square
hexagonal
octagonal
✅ The correct answer is option D.
229. In arc welding, the electric arc is produced between the work and the electrode by
voltage
flow of current
contact resistance
all of these
✅ The correct answer is option C.
230. In __________ welding, the weld may be made either from left to right or from right to left.
fore-hand
back-hand
vertical
✅ The correct answer is option C.