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Electronics and Communication Engineering - Exam Questions Papers

Exercise : Exam Questions Papers - Exam Paper 18
41.
Which of the following stages has no phase inversion of the signal?
Two CE stages
Three CE stages
CE and CC stages
CE stage and emitter follower
Answer: Option
Explanation:
No answer description is available. Let's discuss.
42.
The stage marked X in the architecture shown below of a two stage op-amp is :
Direct coupled amplifier
Buffer amplifier
Level shifter
Blocking oscillator
Answer: Option
Explanation:
No answer description is available. Let's discuss.
43.
Multiple member of antennas are arranged in arrays in order to enhance what property?
Both directivity and bandwidth
Only directivity
Only bandwidth
Neither directivity nor bandwidth
Answer: Option
Explanation:
No answer description is available. Let's discuss.
44.
The 4 point Discrete Fourier Transform (DFT) of a discrete time sequence {1, 0, 2, 3} is
[0, - 2 + 2j, 2, - 2 - 2j]
[2, 2 + 2j, 6, 2 - 2j]
[6, 1 - 3j, 2, 1 + 3]
[6, - 1 + 3j, 0, - 1 - 3j]
Answer: Option
Explanation:
No answer description is available. Let's discuss.
45.
Which of the following materials in not an insulator?
Diamond
Graphite
Bakelite
Lucite
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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