Electronics and Communication Engineering - Electronic Devices and Circuits
Exercise :: Electronic Devices and Circuits - Section 11
| 1. |
The depletion layer in a reverse biased p-n junction is due to the presence of |
| A. |
electrons | | B. |
holes | | C. |
both electrons and holes | | D. |
immobile ions |
Answer: Option D
Explanation:
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| 2. |
Which materials find application in MASER? |
| A. |
Diamagnetic | | B. |
Paramagnetic | | C. |
Ferromagnetic | | D. |
Ferrimagnetic |
Answer: Option A
Explanation:
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| 3. |
An electrically neutral semiconductor has |
| A. |
no free charges | | B. |
no majority carriers | | C. |
no minority carriers | | D. |
equal number of positive and negative charges |
Answer: Option D
Explanation:
|
| 4. |
Magnetic recording tape is most commonly made from |
| A. |
small particles of iron | | B. |
silicon iron | | C. |
ferric-oxide | | D. |
silver nitrate |
Answer: Option C
Explanation:
|
| 5. |
The circuit shown in the figure is best described as a
 |
| A. |
bridge rectifier | | B. |
ring modulator | | C. |
frequency discriminator | | D. |
voltage doubler |
Answer: Option D
Explanation:
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