MCQOPTIONS
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MCQOPTIONS
This section includes 11 Mcqs, each offering curated multiple-choice questions to sharpen your Engineering Metrology knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
WHICH_TECHNIQUE_FROM_GIVEN_LASER_INSPECTION_TECHNIQUES_IS_USEFUL_FOR_MEASURING_THE_DIAMETER_OF_HOT_STEEL_BARS??$ |
| A. | Laser scanning gauge |
| B. | Frequency laser interferometer |
| C. | Laser triangulation sensors |
| D. | Photodiode array imaging |
| Answer» B. Frequency laser interferometer | |
| 2. |
How many sensors are needed to measure part thickness by using laser triangulation sensors?$ |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 4 |
| Answer» C. 3 | |
| 3. |
Where_does_wire_is_placed_in_a_measurement_of_diameter_using_the_technique_of_gauging_wide_diameter_from_the_diffraction_pattern_formed_in_a_laser_beam?$ |
| A. | Between collimator and lens |
| B. | Between collimator and source |
| C. | Between collimator and plane of measurement |
| D. | Between collimator and detectors |
| Answer» D. Between collimator and detectors | |
| 4. |
The location of the image spot directly depends on which factor in laser triangulation sensor technique? |
| A. | Wavelength of laser |
| B. | Measuring range |
| C. | Standoff distance |
| D. | Focal length of lense |
| Answer» D. Focal length of lense | |
| 5. |
Which application is ideally suited for two frequency laser interferometer? |
| A. | Pitch and yaw measurement |
| B. | Hole diameters |
| C. | Thickness measurement |
| D. | Measurement of edge locations |
| Answer» B. Hole diameters | |
| 6. |
How much accuracy can be achieved by photodiode array imaging? |
| A. | ±0.05 μm |
| B. | ±0.15 μm |
| C. | ±0.5 μm |
| D. | ±0.25 μm |
| Answer» B. ¬¨¬®¬¨¬±0.15 ‚âà√≠¬¨‚à´m | |
| 7. |
Which of the following is true about resolution in two frequency laser interferometer? |
| A. | Straightness resolution – 90 nm |
| B. | Angular resolution – 3 arc seconds |
| C. | Flatness resolution – 2 nm |
| D. | Linear resolution – 1 nm |
| Answer» E. | |
| 8. |
What is the accuracy of scanning laser gauge for objects of 10-50 mm diameter? |
| A. | ±0.15 μm |
| B. | ±0.25 μm |
| C. | ±0.35 μm |
| D. | ±0.45 μm |
| Answer» C. ¬¨¬®¬¨¬±0.35 ‚âà√≠¬¨‚à´m | |
| 9. |
Which technique is not suitable to measure large diameter parts or large gaps? |
| A. | Diffraction pattern technique |
| B. | Scanning laser technique |
| C. | Photodiode array imaging |
| D. | Laser triangulation sensor |
| Answer» B. Scanning laser technique | |
| 10. |
What is the wavelength of light produced by He-Ne laser in laser inspection? |
| A. | 6988 √Ö |
| B. | 5328 √Ö |
| C. | 5928 √Ö |
| D. | 6328 √Ö |
| Answer» E. | |
| 11. |
Which of the following is not true about metrology lasers used in laser inspection? |
| A. | These are high-power instruments |
| B. | Used for rapid non-contact gauging of delicate parts |
| C. | Have low optical cross-talk |
| D. | Wide dynamic range |
| Answer» B. Used for rapid non-contact gauging of delicate parts | |