ECE :: Exam Questions Paper
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Separation property of state-transition matrix is
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In a conventional AM superhetrodyne receivers, the detectors employed to extract intelligence include
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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.
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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) = -
The Function F = ∑(0, 3, 4, 5, 7) is implemented using the multiplexer then Identify the correct one :
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Which of the following Boolean algebra rules is correct?
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The Table given below is the mark obtained by 2 students in 8 different subjects.
The coefficient of correlation is: -
In PSK modulation, the input signal is :
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Which of the following statements about the matched filter in a communication receiver are correct?
- Its impulse response depends on the signed shape
- It maximizes the SNR at the detection shape.
- It produces ISI.
- It may produce phase error if synchronization is improper.
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