MCQOPTIONS
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MCQOPTIONS
This section includes 9 Mcqs, each offering curated multiple-choice questions to sharpen your Manufacturing Processes knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Pulse repletion factor is considered while determining the welding speed. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 2. |
The maximum welding speed varies directly with the power |
| A. | True |
| B. | False |
| Answer» B. False | |
| 3. |
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 |
| Answer» D. shroud design | |
| 4. |
The hot plasma vapour emerging from the keyhole may ionize _____ |
| A. | shielding gas |
| B. | shroud gas |
| C. | lasing material |
| D. | workpiece material |
| Answer» C. lasing material | |
| 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 |
| Answer» D. decrease in the weld thickness | |
| 6. |
Flow structures can directly affect the ____ |
| A. | laser wave formation |
| B. | frozen bead |
| C. | weld puddle |
| D. | porosity |
| Answer» C. weld puddle | |
| 7. |
Which of the following has the highest joining efficiency? |
| A. | Acetylene flame welding |
| B. | TIG welding |
| C. | Electron beam welding |
| D. | Laser welding |
| Answer» D. Laser welding | |
| 8. |
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 |
| Answer» B. an energy reflector | |
| 9. |
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 |
| Answer» D. laser beam | |