MCQOPTIONS
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MCQOPTIONS
This section includes 12 Mcqs, each offering curated multiple-choice questions to sharpen your Design Electrical Machines knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Which property of aluminum it the most preferred element? |
| A. | good conductivity |
| B. | highly malleable, highly ductile |
| C. | most abundant element |
| D. | good corrosion resistant |
| Answer» D. good corrosion resistant | |
| 2. |
Which two elements are used in precious instruments? |
| A. | Copper, Silver |
| B. | Gold, Silver |
| C. | Copper, Aluminum |
| D. | Gold, Aluminum |
| Answer» C. Copper, Aluminum | |
| 3. |
WHICH_TWO_ELEMENTS_ARE_USED_IN_PRECIOUS_INSTRUMENTS??$ |
| A. | Copper, Silver |
| B. | Gold, Silver |
| C. | Copper, Aluminum |
| D. | Gold, Aluminum |
| Answer» C. Copper, Aluminum | |
| 4. |
Which_property_of_aluminum_it_the_most_preferred_element?$ |
| A. | good conductivity |
| B. | highly malleable, highly ductile |
| C. | most abundant element |
| D. | good corrosion resistant |
| Answer» D. good corrosion resistant | |
| 5. |
What is the specific gravity of aluminum? |
| A. | 8.96 gm/cm<sup>3</sup> |
| B. | 19.30 gm/cm<sup>3</sup> |
| C. | 2.70 gm/cm<sup>3</sup> |
| D. | 10.49 gm/cm<sup>3</sup> |
| Answer» D. 10.49 gm/cm<sup>3</sup> | |
| 6. |
What is the melting point of aluminum? |
| A. | 660<sup>0</sup>C |
| B. | 1085<sup>0</sup>C |
| C. | 962<sup>0</sup>C |
| D. | 1064<sup>0</sup>C |
| Answer» C. 962<sup>0</sup>C | |
| 7. |
What is the conductivity of Copper? |
| A. | 0.6329*10<sup>6</sup> mho/cm |
| B. | 0.5952*10<sup>6</sup> mho/cm |
| C. | 0.4529*10<sup>6</sup> mho/cm |
| D. | 0.3773*10<sup>6</sup> mho/cm |
| Answer» C. 0.4529*10<sup>6</sup> mho/cm | |
| 8. |
Silver is not used in practical electrical machines. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 9. |
What is the temperature coefficient of silver? |
| A. | 0.00386 per<sup>0</sup>C |
| B. | 0.0034 per<sup>0</sup>C |
| C. | 0.00429 per<sup>0</sup>C |
| D. | 0.0038 per<sup>0</sup>C |
| Answer» E. | |
| 10. |
What are the characteristics of high conductivity materials based on cost and flexibility? |
| A. | Low cost, low flexibility |
| B. | Low cost, high flexibility |
| C. | High cost, low flexibility |
| D. | High cost, high flexibility |
| Answer» C. High cost, low flexibility | |
| 11. |
High conductivity materials are used in electrical machines. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 12. |
Which material has the highest conductivity of all materials? |
| A. | Silver |
| B. | Copper |
| C. | Gold |
| D. | Tungsten |
| Answer» B. Copper | |