MCQOPTIONS
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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. |
Type-B optical flat is tested for parallelism. What is the formula for the difference of the thickness of the flat at 2 points on the adjacent fringe? ( is the refractive index) |
| A. | /2*(1/ ) microns |
| B. | /4*( ) microns |
| C. | * microns |
| D. | *( /2) microns |
| Answer» B. /4*( ) microns | |
| 2. |
Which of the following is the method to test parallelism in Type-B optical flats? |
| A. | Hawking interferometer |
| B. | Enrico interferometer |
| C. | Fizeau interferometer |
| D. | Stephan interferometer |
| Answer» D. Stephan interferometer | |
| 3. |
Which of the following statement is true for optical flats?Statement 1: Type-A optical flats are tested for parallelism of working surfaces. |
| A. | nStatement 2: Flatness of working surface is tested by comparing with a master flat. |
| B. | T, F |
| C. | F, F |
| D. | T, T |
| E. | F, T |
| Answer» E. F, T | |
| 4. |
Which of the following is not the dimension of optical flat Type A as per IS : 5440 1969 in mm ? |
| A. | 25 x 10 |
| B. | 50 x 30 |
| C. | 30 x 10 |
| D. | 125 x 30 |
| Answer» D. 125 x 30 | |