Electrical Engineering : Electrical Engineering Materials QUESTIONS AND ANSWERS :: part4 : 1 to 5
Following Electrical Engineering Multiple choice objective type questions and answers will help you in BSNL JTO, GATE 2024 and IES 2024 examinations :
1.is an element used in semiconductors whose atoms have three valence electrons. |
| An acceptor |
| A donor |
| Germanium |
| Silicon |
2.The minority carrier concentration is largely a function of |
| forward biasing voltage |
| reverse biasing voltage |
| temperature |
| the amount of doping |
3.The current due to electron flow in conduction band is the hole current in valence band. |
| equal to |
| less than |
| greater than |
| any of the above |
4.For a hole which of the following statements is incorrect ? |
| Holes can exist in certain semicon-ductors only |
| Holes can exist in any material in-cluding conductors |
| Holes may constitute an electric current |
| Holes can be considered as a net positive charge |
5.In conductors conduction of electricity takes place due to movement of |
| electrons only |
| positive ions only |
| negative ions only |
| positive and negative ions |
More Electrical Engineering Materials QUESTIONS AND ANSWERS available in next pages
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