MCQOPTIONS
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MCQOPTIONS
This section includes 15 Mcqs, each offering curated multiple-choice questions to sharpen your Aerospace Materials and Processes knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Which of the following hardness testing method is preferred for aircraft manufacturing purposes? |
| A. | Brinell hardness |
| B. | Rockwell hardness |
| C. | Divider method |
| D. | Shore scleroscope hardness |
| Answer» C. Divider method | |
| 2. |
In the beginning of the Rockwell hardness experiment, the reading dial is set to _____ |
| A. | 100 |
| B. | 50 |
| C. | 0.1 |
| D. | 0 |
| Answer» E. | |
| 3. |
To find a true hardness reading for hard steel, the minimum thickness required for material is ____ |
| A. | 0.0027mm |
| B. | 6.858mm |
| C. | 0.27mm |
| D. | 234mm |
| Answer» C. 0.27mm | |
| 4. |
The Rockwell hardness testing method typically uses certain amounts of load. Which of the following is not one of the loads used? |
| A. | 150kg |
| B. | 60kg |
| C. | 5kg |
| D. | 100kg |
| Answer» D. 100kg | |
| 5. |
Rockwell hardness test uses either a ____________ ball or ___________ cone for measuring hardness. |
| A. | steel, diamond |
| B. | diamond, steel |
| C. | carbon, iron |
| D. | iron, carbon |
| Answer» B. diamond, steel | |
| 6. |
To perform Brinell test on a soft material like bronze _____________ kg of load is applied on the specimen. |
| A. | 3000 |
| B. | 500 |
| C. | 6600 |
| D. | 1200 |
| Answer» C. 6600 | |
| 7. |
Which of the following is not a way to prepare the test material for the Brinell hardness test? |
| A. | Grinding |
| B. | Layering |
| C. | Filing |
| D. | Polishing |
| Answer» D. Polishing | |
| 8. |
If the load being applied is 2000kg, and the area of impression is 250 Square millimetres, what is the Brinell number of the test material? |
| A. | 80 kg per square millimeter |
| B. | 25 kg per square millimeter |
| C. | 20 kg per square millimeter |
| D. | 8 kg per square millimeter |
| Answer» E. | |
| 9. |
In the Brinell testing method, the load should be pressed for a minimum of ____________ |
| A. | 1000 seconds |
| B. | 60 seconds |
| C. | 10 seconds |
| D. | 3 seconds |
| Answer» D. 3 seconds | |
| 10. |
The Brinell testing method uses a steel ball of __________ diameter for testing purposes. |
| A. | 26mm |
| B. | 1mm |
| C. | 10m |
| D. | 10mm |
| Answer» E. | |
| 11. |
There is a necessity to find the hardness of a material without causing deformation in them. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 12. |
For ____________ materials, there is no correspondence between tensile strength and hardness. |
| A. | soft |
| B. | hard materials |
| C. | steel |
| D. | carbon |
| Answer» B. hard materials | |
| 13. |
It is impossible to find a relation between hardness and tensile strength. |
| A. | True |
| B. | False |
| Answer» C. | |
| 14. |
It is vital that surfaces that have to be tested to determine the hardness of the material must be free of _____ |
| A. | ridges |
| B. | evenness |
| C. | smoothness |
| D. | thickness |
| Answer» B. evenness | |
| 15. |
Which of the following is not a hardness testing method? |
| A. | Rockwell hardness |
| B. | Brinell hardness |
| C. | Set method hardness |
| D. | Shore scleroscope hardness |
| Answer» D. Shore scleroscope hardness | |