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Electronics and Communication Engineering - Exam Questions Papers

Exercise : Exam Questions Papers - Exam Paper 13
21.
Separation property of state-transition matrix is
φ(t - t0) = φ(t) φ(t0)
φ(t - t0) = φ-1(t) φ-1(t0)
φ(t - t0) = φ(t) φ-1(t0)
φ(t - t0) = φ-1(t) φ-1(t0)
Answer: Option
Explanation:
No answer description is available. Let's discuss.
22.
In a conventional AM superhetrodyne receivers, the detectors employed to extract intelligence include
Peak detectors
Ratio detectors
PLL
Slope detectors
Answer: Option
Explanation:
No answer description is available. Let's discuss.
23.

Assertion (A): The h-parameter model of a BJT can be derived from its hybrid-p model and vice-versa.

Reason (R): The hybrid-p model has many more additional elements as compared to h-parameter model of the BJT.

Both A and R are individually true and R is the correct explanation of A
Both A and R are individually true but R is not the correct explanation of A
A is true but R is false
A is false but R is true
Answer: Option
Explanation:
No answer description is available. Let's discuss.
24.
The input to a binary communication system, denoted by a random variable x, takes on one of the two values 0 or 1 with probabilities and . The behaviour of the communication system is modelled by
P(Y = 1 |x = 1|) = and P(Y = 0|x = 0) =
P(x = 1|y = 1) =
1
Answer: Option
Explanation:
No answer description is available. Let's discuss.
25.
The signal flow graph of a system is shown below:

The transfer of the system is
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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