Electronics and Communication Engineering - Exam Questions Papers

31. 

Which of the following counters can be used to divide the clock frequency of a microprocessor by 5?

A. 3 bit counter
B. 5 bit counter
C. mod 3 counter
D. mod 5 counter

Answer: Option D

Explanation:

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32. 

In the given circuit, the switch has been in position 1 for quite a long time. At t = 0 the switch is moved to position 2. At this position what is the time constant?

A. 0.1 s
B. 1 s
C. 0.11 s
D. 1.11 s

Answer: Option A

Explanation:

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33. 

A divide by 78 counters can be realized by using

A. six mod-13 counters
B. thirteen mod-6 counters
C. one mod 13 counter followed by one mod-6 counter
D. thirteen mod-13 counters

Answer: Option A

Explanation:

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34. 

The process of extension of a single-crystal surface by growing a film in such a way that the added atoms form a continuation of the single-crystal structure is called

A. Ion implantation
B. Chemical vapour deposition
C. Electroplating
D. Epitaxy

Answer: Option D

Explanation:

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35. 

Which of the following are the non-linear application of op-amp?

  1. Current-to-voltage converter
  2. Comparator
  3. Peak detector
  4. Limiter
Select the correct answer from the codes given below:

A. 1, 2 and 3
B. 2, 3 and 4
C. 1, 3 and 4
D. 1, 2 and 4

Answer: Option B

Explanation:

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