 
			 
			MCQOPTIONS
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				This section includes 15 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. | What is the order of overall magnification in Eden-Rolt Millionth Comparator? | 
| A. | 50 | 
| B. | 400 | 
| C. | 20,000 | 
| D. | 800 | 
| Answer» D. 800 | |
| 2. | What is the use of bleed valve in flow type pneumatic comparator? | 
| A. | Zero adjustment | 
| B. | Measurement of size | 
| C. | Connect passage of air from plastic tube to gauging head | 
| D. | Used with pressure reducing unit | 
| Answer» B. Measurement of size | |
| 3. | Which of the following is true for ’Cross strip’ in sigma comparator? | 
| A. | Has two moving members | 
| B. | Cross strip is hinged | 
| C. | Two members are at 45o to each other | 
| D. | A flexible strip is attached to any one of the members of cross strip | 
| Answer» C. Two members are at 45o to each other | |
| 4. | From which category ‘Sigma comparator’ belongs? | 
| A. | Optical comparator | 
| B. | Mechanical comparator | 
| C. | Mechanical-optical comparator | 
| D. | Pneumatic comparator | 
| Answer» C. Mechanical-optical comparator | |
| 5. | What is the principle of ‘The Johansson Mikrokator’? | 
| A. | Button spinning on a loop of string | 
| B. | Principle of interference | 
| C. | Optical magnification | 
| D. | Principle of transformer | 
| Answer» B. Principle of interference | |
| 6. | WHAT_IS_THE_USE_OF_BLEED_VALVE_IN_FLOW_TYPE_PNEUMATIC_COMPARATOR??$ | 
| A. | Zero adjustment | 
| B. | Measurement of size | 
| C. | Connect passage of air from plastic tube to gauging head | 
| D. | Used with pressure reducing unit | 
| Answer» B. Measurement of size | |
| 7. | What_is_the_order_of_overall_magnification_in_Eden-Rolt_Millionth_Comparator?$ | 
| A. | 50 | 
| B. | 400 | 
| C. | 20,000 | 
| D. | 800 | 
| Answer» D. 800 | |
| 8. | Which of the following option is correct regarding the characteristics of comparators? | 
| A. | Minimum inertia | 
| B. | Minimum compensation for temperature effect | 
| C. | High measuring pressure | 
| D. | Minimum versatility | 
| Answer» B. Minimum compensation for temperature effect | |
| 9. | Which of the following is true for Eden-Rolt Millionth Comparator? | 
| A. | Utilise both mechanical and optical magnifications | 
| B. | Only mechanical magnification | 
| C. | Only optical magnification | 
| D. | Only electrical magnification | 
| Answer» B. Only mechanical magnification | |
| 10. | Which colour of light is filtered by filter present in Zeiss Ultra-optimeter? | 
| A. | Red | 
| B. | Blue | 
| C. | Green | 
| D. | Yellow | 
| Answer» D. Yellow | |
| 11. | Which of the following is true for ’Cross strip’ in sigma comparator?$ | 
| A. | Has two moving members | 
| B. | Cross strip is hinged | 
| C. | Two members are at 45<sup>o</sup> to each other | 
| D. | A flexible strip is attached to any one of the members of cross strip | 
| Answer» C. Two members are at 45<sup>o</sup> to each other | |
| 12. | What is the advantage of mechanical comparator over others? | 
| A. | Less moving parts | 
| B. | No need of external supply | 
| C. | No error due to parallax | 
| D. | Large range of instrument | 
| Answer» C. No error due to parallax | |
| 13. | From which category ‘Sigma comparator’ belongs?$ | 
| A. | Optical comparator | 
| B. | Mechanical comparator | 
| C. | Mechanical-optical comparator | 
| D. | Pneumatic comparator | 
| Answer» C. Mechanical-optical comparator | |
| 14. | What is the principle of ‘The Johansson Mikrokator’?$ | 
| A. | Button spinning on a loop of string | 
| B. | Principle of interference | 
| C. | Optical magnification | 
| D. | Principle of transformer | 
| Answer» B. Principle of interference | |
| 15. | Which of the following is true for uses of comparators? | 
| A. | Can’t be used in mass production | 
| B. | Not suitable for inspection purposes | 
| C. | Can be used as working gauge | 
| D. | Slow rate of working | 
| Answer» D. Slow rate of working | |