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. |
How much height intervals relative to optical flat is represented by a spacing of fringes? |
| A. | λ/3 |
| B. | λ |
| C. | λ/2 |
| D. | λ/6 |
| Answer» D. λ/6 | |
| 2. |
Given figure is a surface to be tested by surface contour test. How much lower or higher is B than Z in this given figure? |
| A. | λ/4 |
| B. | λ/2 |
| C. | 3λ/2 |
| D. | 3λ/4 |
| Answer» C. 3λ/2 | |
| 3. |
Which of the following option is true for given statements about surface contour test?Statement 1: In a monochromatic light, bands are lighter near the point of contact.Statement 2: To study surface contour it is important to know the point of contact with optical flat. |
| A. | T, T |
| B. | F, F |
| C. | F, T |
| D. | T, F |
| Answer» D. T, F | |
| 4. |
How_much_height_intervals_relative_to_optical_flat_is_represented_by_a_spacing_of_fringes?$ |
| A. | λ/3 |
| B. | λ |
| C. | λ/2 |
| D. | λ/6 |
| Answer» D. ‚âà√≠¬¨‚Ñ¢/6 | |
| 5. |
What is the nature of the surface if curve bands around the line of contact when the surface is tested under surface contour test? |
| A. | Convex surface |
| B. | Concave surface |
| C. | Flat surface |
| D. | May be convex or concave |
| Answer» B. Concave surface | |
| 6. |
Which of the following is not true for optical flats used in surface contour test? |
| A. | Colourless |
| B. | Always wrung on the work piece |
| C. | Work piece and optical flat should be free from dust, dust and fingerprints |
| D. | Optical flat should always be lifted from work piece |
| Answer» C. Work piece and optical flat should be free from dust, dust and fingerprints | |
| 7. |
Curvature of bands is more. What does this statement indicate when surface is tested under surface contour test? |
| A. | More convexity |
| B. | More concavity |
| C. | Flat surface |
| D. | More scratches |
| Answer» B. More concavity | |
| 8. |
What is the method to find low and high spots? |
| A. | Pressure by weight test |
| B. | Volume test |
| C. | Pressure test |
| D. | Density test |
| Answer» D. Density test | |
| 9. |
If any surface has a scratch on it and surface is tested by surface contour test then, what is the depth of scratch? (D= distance between fringes, d= distance due to scratch) |
| A. | (d/D)*(λ) |
| B. | (d/D)*(λ/2) |
| C. | (d/D)*(λ/4) |
| D. | (d/D)*(3λ/2) |
| Answer» C. (d/D)*(‚âà√≠¬¨‚Ñ¢/4) | |
| 10. |
How much change is the elevation of surface corresponds to the single fringe interval in surface contour test? |
| A. | 0.0005 mm |
| B. | 0.0025 mm |
| C. | 0.025 mm |
| D. | 0.05 mm |
| Answer» C. 0.025 mm | |
| 11. |
Which is the wavelength of a spectrum which is used in surface contour test? |
| A. | 0.0005 mm |
| B. | 0.005 mm |
| C. | 0.05 mm |
| D. | 0.5 mm |
| Answer» B. 0.005 mm | |