MCQOPTIONS
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MCQOPTIONS
This section includes 10 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. |
The geometry and radii of orbital paths of electrons depend on the presence of an electromagnetic field. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 2. |
The electrons at ground state can be excited to a higher state of energy by _____ |
| A. | increasing the pressure |
| B. | lowering the energy |
| C. | absorbing the energy |
| D. | oxidising the atom |
| Answer» D. oxidising the atom | |
| 3. |
At _____ temperature an atom is considered to be at ground level. |
| A. | absolute zero |
| B. | 0oC |
| C. | 100oC |
| D. | 100 K |
| Answer» B. 0oC | |
| 4. |
Laser causes a rapid substantial rise in _____ of the material. |
| A. | local temperature |
| B. | local pressure |
| C. | indentation |
| D. | cracks |
| Answer» B. local pressure | |
| 5. |
Laser beams can have power density upto _____ |
| A. | 1 kW/mm2 |
| B. | 10 kW/mm2 |
| C. | 1 MW/mm2 |
| D. | 10 MW/mm2 |
| Answer» D. 10 MW/mm2 | |
| 6. |
Laser stands for light amplification by stimulated emission of radiation. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 7. |
Lasers are also used for_____ |
| A. | riveting |
| B. | nitriding |
| C. | rapid prototyping |
| D. | facing |
| Answer» D. facing | |
| 8. |
Which of the following processes does not use lasers? |
| A. | Cladding |
| B. | Alloying |
| C. | Nitriding |
| D. | Cutting |
| Answer» D. Cutting | |
| 9. |
Laser Beam is produced due to _____ |
| A. | spontaneous emission |
| B. | stimulated emission followed by spontaneous emission |
| C. | spontaneous emission followed by Spontaneous absorption |
| D. | spontaneous absorption leading to “population inversion” and followed by stimulated emission |
| Answer» E. | |
| 10. |
Mechanism of material removal in Laser Beam Machining is due to _____ |
| A. | mechanical erosion due to impact of high of energy photons |
| B. | electro-chemical etching |
| C. | melting and vaporisation due to thermal effect of impingement of high energy laser beam |
| D. | fatigue failure |
| Answer» D. fatigue failure | |