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Electronics and Communication Engineering - Exam Questions Papers

Exercise : Exam Questions Papers - Exam Paper 19
21.
Which one of the following is a trivalent material?
Antimony
Phosphorus
Arsenic
Boron
Answer: Option
Explanation:
No answer description is available. Let's discuss.
22.
In orthogonal BFSK. the energy of information bearing term is :
the same as total transmitted energy
one half of total transmitted energy
one fourth of total transmitted energy
None
Answer: Option
Explanation:
No answer description is available. Let's discuss.
23.
The maximum positive and negative numbers which can be represented in 2's complement form using n bits are respectively
+(2n + 1 - 1), - (2n - 1 - 1)
+(2n + 1 - 1), - 2n - 1
+2n - 1, - 2n - 1
+2n + 1, - (2n - 1 + 1)
Answer: Option
Explanation:
No answer description is available. Let's discuss.
24.
What is the chemical bonding in silicon semiconductor?
Metallic
Ionic
Covalent
van der Waals
Answer: Option
Explanation:
No answer description is available. Let's discuss.
25.
The probability density function of the envelope of narrow band noise is :
Uniform
Gaussian
Rayleigh
None
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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