ECE :: Exam Questions Paper
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If X = 1 in the logic equation [X + Z { Y + (Z + X Y)}] { X + Z (X + Y)} = 1, then
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Consider a system with the transfer function
. Its damping ratio will be 0.5 when the value of k is : -
For the system with given characteristic equation
s5 + 4s4 + 8s3 + 8s2 + 7s + 4 = 0
The number of roots on left hand side, right hand side and imaginary axis are respectively. -
A series RLC circuit has a resonance frequency of 1 kHz and a quality factor Q = 100. If each of R, L and C is doubled from its original value, the new Q of the circuit is
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The depth of penetration at 4 MHz is 10 cm, then at 2.5 MHz it is
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The expression given is F(A, B , C, D, E, F, G, H) =
(33, 48, 102, 158, 222, 229, 233, 243, 255); then the __________ and __________ minterms are grouped together into dual and variable __________ is reduced using the dual -
Calculate i(t) for t ≥ 0 assuming the switch has been in position A for a long time. At t = 0, the switch is moved to position B.
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A source produces 4 symbols with probabilities
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, 
, For this source, a practical coding scheme has an average codeword length of 2 bits/symbol. The efficiency of the code is -
A generator of 50 Ω internal impedance and operating at 1 GHz feeds a 75 Ω load via a coaxial line of characteristic impedance 50 Ω. The VSWR on the feed line is
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