Electrical Engineering : Electrical Engineering Materials QUESTIONS AND ANSWERS :: part1 : 21 to 25
Following Electrical Engineering Multiple choice objective type questions and answers will help you in BSNL JTO, GATE 2024 and IES 2024 examinations :
21.Which of the following materials is preferred for transmitting electrical energy over long distance ? |
| Copper |
| Aluminium |
| Steel reinforced copper |
| Steel reinforced aluminium |
22.Superconductors are becoming popular for use in |
| generating very strong magnetic field |
| manufacture of bubble memories |
| generating electrostatic field |
| generating regions free from magnetic field |
23.The conductors have transport phenomena of electrons due to |
| electric field |
| magnetic field |
| electromagnetic field |
| none of the above |
24.Which of the following resistive materials has the lowest temperature co-efficient of resistance ? |
| Nichrome |
| Constantan |
| Kanthal |
| Molybdenum |
25.Superconductivity is observed for |
| infrared frequencies |
| d.c. and low frequency |
| a.c. and high frequency |
| frequencies having no effect |
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