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Manufacturing Engineering Ii
Advanced Manufacturing Processes
Quiz 1
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Q.1
In keyhole mode of laser welding, hole is stabilized by the _____
a) weld puddle
b) shielding gases
c) pressure of the vapour
d) laser beam
Q.2
In keyhole mode of laser welding, the keyhole behaves like _____
a) optical black body
b) an energy reflector
c) an energy amplifier
d) a shielding
Q.3
Which of the following has the highest joining efficiency?
a) Acetylene flame welding
b) TIG welding
c) Electron beam welding
d) Laser welding
Q.4
Flow structures can directly affect the ____
a) laser wave formation
b) frozen bead
c) weld puddle
d) porosity
Q.5
During laser welding, any hump on the surface can cause _____
a) increase in weld porosity
b) flow instability
c) higher energy absorption
d) decrease in the weld thickness
Q.6
The hot plasma vapour emerging from the keyhole may ionize _____
a) shielding gas
b) shroud gas
c) lasing material
d) workpiece material
Q.7
How many of the following process parameters can affect the welding process?
a) 1
b) 2
c) 3
d) 4
Q.8
Which of the following does not affect the operating characteristics in laser welding?
a) shroud gas composition
b) material surface conditions
c) component orientation
d) shroud design
Q.9
The maximum welding speed varies directly with the power
a) True
b) False
Q.10
Pulse repletion factor is considered while determining the welding speed.
a) True
b) False
0 h : 0 m : 1 s
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