Match the following
Manufacturing process
Characteristic
A. Drilling and boring
1. Removal of excess material
B. Machining
2. Parting off
C. Micro-manufacturing
3. Hole creation and enlargement
D. Cutting
4. Micro feature generation
A-1, B-3, C-2, D-4
A-2, B-3, C-4, D-1
A-2, B-4, C-1, D-3
A-3, B-1, C-4, D-2
Which one of the following CANNOT be used as an assist gas in pyrolytic laser cutting?
Hydrogen
Carbon dioxide
Oxygen
Nitrogen
In the laser drilling process, redeposition of some molten material on inside wall of the hole is called _____
Rendering
Recasting
Riveting
Boring
The deposition of some of the molten material near the opening side of the laser created cavity is called
Spatter
Dross
Slag
Wormholes
The phenomenon of breaking of chemical bond is utilised in _______
Pyrolytic laser cutting
Photolytic laser drilling
Pyrolytic laser welding
Pyrolytic laser forming
Which one of the following is NOT a laser-cutting mode?
Fusion cutting
Flame cutting
Fission cutting
Remote cutting
Periodic lines appearing on the cut surface during laser cutting are called
Striations
Cracks
Wormholes
Spatter
In laser based cutting, which one of the following factor does not influence the heat affected zone
Power
Pulse width
Interaction time
Kerf
The wavelength of laser is a ______ property.
Beam
Mechanism
Gas
Material
Which one of the following gas can be used while cutting stainless steel to avoid dross issue?
Hydrogen
Carbon monoxide
Argon
Fluorine