Q.1
Which of the following are the other applications of LBM?
  • a) Dressing of grinding wheels
  • b) Scribing
  • c) Micromachining
  • d) All of the mentioned
Q.2
How the grooves in grinding wheels are produced using laser?
  • a) Evaporation
  • b) Damage of composite
  • c) Evaporation & Damage of composite
  • d) None of the mentioned
Q.3
Work piece tilting depends on which of the following factors?
  • a) Incident power
  • b) Beam speed
  • c) Groove direction
  • d) All of the mentioned
Q.4
What are the values of thickness used is fine cutting process?
  • a) 0.01 to 0.05 mm
  • b) 0.05 to 0.1 mm
  • c) 0.5 to 15 mm
  • d) 15 to 50 mm
Q.5
The advantages of excimer laser are due to __________ laser wavelength and _________ pulse duration.
  • a) Short, short
  • b) Short, long
  • c) Long, short
  • d) Long, long
Q.6
Lasers of which type are used for modification of electronic components?
  • a) High power
  • b) Small spot size
  • c) Short pulse length
  • d) All of the mentioned
Q.7
Material removal rates which are about mg/pulse produces which type of holes?
  • a) Shallow
  • b) Deep
  • c) Very deep
  • d) All of the mentioned
Q.8
Which of the following materials can be easily separated by laser scribing?
  • a) Silicon
  • b) Glass
  • c) Ceramic
  • d) All of the mentioned
Q.9
Which type of holes can be drilled using Nd-YAG laser?
  • a) Small holes
  • b) Large holes
  • c) Small & Large holes
  • d) None of the mentioned
Q.10
Which type of laser can be used for direct drilling or percussion?
  • a) Ruby laser
  • b) Nd-YAG laser
  • c) Ruby & Nd-YAG laser
  • d) None of the mentioned
Q.11
Which of the following lasers is used for cutting thick materials in LBM?
  • a) CO2 + gas assisted
  • b) CO2 only
  • c) Nd-YAG
  • d) Ruby
Q.12
Which of the following lasers is used for slitting of thin metallic materials in LBM?
  • a) CO2 + gas assisted
  • b) CO2 only
  • c) Nd-YAG
  • d) Ruby
Q.13
Which of the following lasers is used for slitting of thin plastic materials in LBM?
  • a) CO2 + gas assisted
  • b) CO2 only
  • c) Nd-YAG
  • d) Ruby
Q.14
Which of the following lasers is used for organics and non-metallic materials in LBM?
  • a) CO2 + gas assisted
  • b) Pulsed CO2
  • c) Nd-YAG
  • d) Ruby
Q.15
Which of the following lasers is used for ceramic materials in LBM?
  • a) Pulsed CO2
  • b) Nd-YAG
  • c) Pulsed CO2 & Nd-YAG
  • d) None of the mentioned
0 h : 0 m : 1 s