Semiconductor Materials (Intrinsic & Extrinsic) — MCQs – EE

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1. An intrinsic semiconductor is:



2. In an intrinsic semiconductor, the number of electrons is:



3. The conductivity of an intrinsic semiconductor:



4. Silicon and germanium are examples of:



5. Extrinsic semiconductors are obtained by:



6. N-type semiconductors are created by adding:



7. P-type semiconductors are created by adding:



8. The majority carriers in N-type semiconductor are:



9. The majority carriers in P-type semiconductor are:



10. Doping a semiconductor increases:



11. In N-type silicon, the donor atom is typically:



12. In P-type silicon, the acceptor atom is typically:



13. In intrinsic semiconductors, the Fermi level lies:



14. In N-type semiconductors, the Fermi level:



15. In P-type semiconductors, the Fermi level:



16. Extrinsic semiconductors have:



17. In N-type material, minority carriers are:



18. In P-type material, minority carriers are:



19. The conductivity of an extrinsic semiconductor is:



20. The energy band gap of silicon is approximately:



21. The energy band gap of germanium is approximately:



22. Which type of carrier dominates conduction in intrinsic semiconductors at room temperature?



23. Extrinsic semiconductors are classified as:



24. Doping concentration in extrinsic semiconductors is typically:



25. Minority carrier concentration in N-type material:



26. Minority carrier concentration in P-type material:



27. An intrinsic semiconductor at absolute zero behaves as:



28. The electrical conductivity of intrinsic semiconductors depends on:



29. The mobility of electrons in semiconductors is:



30. The main advantage of extrinsic semiconductors is:



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