Exercise: Exam Question Papers
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A source produces 4 symbols with probabilities 
, 
, 
, For this source, a practical coding scheme has an average codeword length of 2 bits/symbol. The efficiency of the code is
, , , For this source, a practical coding scheme has an average codeword length of 2 bits/symbol. The efficiency of the code is
A:
1
B: 
C:
D:
Answer: B
Total information for L message is
Efficiency =
.
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.
A: 
B: 
C: 
D: 
Answer: D
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
(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
Answer: B
We use Quine - McCluskey method of reduction :
We can observe that minterms 158 and 222 can be grouped together to reduce the variable 'B'.
The depth of penetration at 4 MHz is 10 cm, then at 2.5 MHz it is
Answer: B
Depth of penetration
δ2 = 12.64 cm.
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
Answer: B
Resonant frequency
Quality factor = 
where R, L, C all are doubled, then
.
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