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:
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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:
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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:
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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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