MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 4 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. |
To distinguish hill and valley one surface of optical flat is lightly pressed. Which of the following option is for the valley? |
| A. | Number of fringes increases |
| B. | Fringes move apart |
| C. | Fringes brought closer |
| D. | Centre of fringes is displaced |
| Answer» C. Fringes brought closer | |
| 2. |
Which of the following option is true for optical flats used in flatness testing? |
| A. | Type A optical flats has only one surface flat |
| B. | Optical flats are better than quartz flats |
| C. | White light source is very important in measurement by light wave interference |
| D. | Working surfaces of optical flats are cylindrical |
| Answer» B. Optical flats are better than quartz flats | |
| 3. |
Which of the following option is correct for the given statements about interferometry applied to flatness testing?Statement 1: If the angle between optical flat and surface is too large then there will be largely spaced fringe pattern is observed. |
| A. | nStatement 2: Quartz flats are very sensitive to heat. |
| B. | T, T |
| C. | F, T |
| D. | T, F |
| E. | F, F |
| Answer» E. F, F | |
| 4. |
Which of the following is the incorrect condition for a perfectly flat surface when tested for interferometry? |
| A. | Monochromatic light is used |
| B. | Viewing angle should be greater than 0<sup>o</sup> |
| C. | Optical flats are important in light wave measurement |
| D. | For perfect flat surface alternate light and dark bands are observed |
| Answer» D. For perfect flat surface alternate light and dark bands are observed | |