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:
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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:
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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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