MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 6 Mcqs, each offering curated multiple-choice questions to sharpen your Electronic Devices and Circuits Questions and Answers knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The fF (E) decreases in which of the following band for p-type semiconductor? |
| A. | a)Conduction band |
| B. | b)Donor band |
| C. | c)Acceptor band |
| D. | d)Valence band |
| Answer» B. b)Donor band | |
| 2. |
The 1-fF (E) increases in which of the following band for n type semiconductor? |
| A. | a)Conduction band |
| B. | b)Donor band |
| C. | c)Acceptor band |
| D. | d)Valence band |
| Answer» E. | |
| 3. |
If Ef>Efi, then what is the type of the semiconductor? |
| A. | a)n-type |
| B. | b)P-type |
| C. | c)Elemental |
| D. | d)Compound |
| Answer» B. b)P-type | |
| 4. |
Consider a silicon wafer having Nc=2.8*1019cm-3 and the Fermi energy is .25eV below the conduction band. Calculate the equilibrium concentrations of electrons at T=300K? |
| A. | a)18*1016cm-3 |
| B. | b)1.8*1016cm-3 |
| C. | c)1.8*1014cm-3 |
| D. | d)180*1016cm-3 |
| Answer» B. b)1.8*1016cm-3 | |
| 5. |
Calculate the number of electrons is the number of holes are 15*1010? |
| A. | a)15*1010 |
| B. | b)1.5*108 |
| C. | c)1.5*109 |
| D. | d)1.5*1010 |
| Answer» D. d)1.5*1010 | |
| 6. |
Is n/p=ni2 is a correct formula? |
| A. | a)True |
| B. | b)False |
| Answer» C. | |