Electronics and Communication Engineering - Exam Questions Papers
Exercise :: Exam Questions Papers - Exam Paper 19
| 1. |
Which of the following uses 'transferred electron effect' for production of microwaves? |
| A. |
Silicon | | B. |
Germanium | | C. |
Metal-semiconductor junction | | D. |
Gallium Arsenide |
Answer: Option D
Explanation:
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| 2. |
The figures shows the symbol of
 |
| A. |
p channel depletion MOSFET | | B. |
p channel enhancement MOSFET | | C. |
complementary MOSFET | | D. |
p channel JFET |
Answer: Option A
Explanation:
|
| 3. |
The spectral range of a band pass signal extends from 10 MHz to 10.4 MHz. What is the minimum sampling frequency required for reconstruction? |
| A. |
20 MHz | | B. |
20.8 MHz | | C. |
20.4 MHz | | D. |
0.8 MHz |
Answer: Option D
Explanation:
|
| 4. |
All poles and zeros of a driving point immittance function of an L-C network |
| A. |
should lie on the jω axis | | B. |
should lie on the +ve real axis | | C. |
should lie on the - ve real axis | | D. |
can lie anywhere in s-plane |
Answer: Option A
Explanation:
|
| 5. |
In 8085 microprocessor, the interrupt enable flip-flop is reset by |
| A. |
DI instruction only | | B. |
system RESET only | | C. |
interrupt acknowledgment only | | D. |
all of the above |
Answer: Option D
Explanation:
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