MCQOPTIONS
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MCQOPTIONS
This section includes 10 Mcqs, each offering curated multiple-choice questions to sharpen your Casting knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
It is very difficult to cast pure copper metal in mould cavity because of shrinkage problems. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 2. |
Copper is generally a polymorphous material with body centered cubic (BCC) lattice structure. |
| A. | True |
| B. | False |
| Answer» C. | |
| 3. |
In general, copper is highly reactive with sulphur and its chemical compounds. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 4. |
Castings or components of copper alloys have high machinability and recyclability. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 5. |
At zero level temperature of copper alloys, they become very hard and brittle in nature. |
| A. | True |
| B. | False |
| Answer» C. | |
| 6. |
Copper alloys possess good mechanical properties even at high temperatures. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 7. |
Copper alloys have low thermal conductivity but high electrical conductivity. |
| A. | True |
| B. | False |
| Answer» C. | |
| 8. |
Copper alloys generally have sparking nature due to its high ductility. |
| A. | True |
| B. | False |
| Answer» C. | |
| 9. |
Which of the following parts are mostly manufactured by using copper alloys? |
| A. | Pistons |
| B. | Engine blocks |
| C. | Journal bearings |
| D. | Aircrafts |
| Answer» D. Aircrafts | |
| 10. |
For protection of copper alloys from corrosion, a special type of coating is applied on it. |
| A. | True |
| B. | False |
| Answer» C. | |