ECE :: Exam Questions Paper
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The effective length of an 1/2 antenna (Given Rr = 73 Ω and (Ae)max = 0.34λ2 and η = 120p) is __________ .
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Consider a Binary Symmetric Channel (BSC) with probability of error being p. To transmit a bit, say 1, we transmit a sequence of three 1 s. The receiver will interpret the received sequence to represent 1 if at least two bits are 1. The probability that the transmitted bit will be received in error is
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Consider the sequence x(n) whose fourier transform X(ejω) is depicted for - p ≤ ω ≤ p as shown in figure
- x(n) is periodic
- Real
- Even
- Finite energy
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In the given figure
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The damped frequency is __________ . -
For a medium σ = 2.1 x 10-4 mho/m and ε = 80 e0 at a frequency of 5 GHz its loss tangent is
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For the output F to be 1 in the logic circuit shown, the input combination should be
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The function shown in figure, can represent a probability density function for A __________ .
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Ω 
|X(ejω)|2 dω 
= 9.45 X 10-6.
is
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f(x)dx = 1 and is always non negative or the area under the curve f(x) is unity.
x 2 x 2A = 1
.