ECE :: Exam Questions Paper
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The equivalent form of the logical expression ABC + A BC + ABC + ABC + AB C is
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The gradient of any scalar field always yields __________ .
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In a flash type ADC, employing 15 comparators resolution with 10 volts reference; is expected to be :
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During transmission over a communicate channel, bit errors occur independently with probability
. If a block of 3 bits are transmitted, the probability of at most one bit error is equal to -
If x1[n]
x1(z) with ROC = R1 and x2[n] x2(z) with ROC = R2 then ROC for x1[n] + x2[n] will be __________ (where Ri → Region of convergence and x1[n] and x2[n] are causal). -
Consider a unity feedback control system with open-loop transfer function
The steady state error of the system due to a unity step input is : -
The analog signal given below is sampled at 1200 samples per second. m(t) = 2 sin 120 pt + 3 sin 240 pt + 4 sin 360 pt + 5 sin 480 pt + 6 sin 600 pt + 7 sin 720 pt. The folding (maximum) frequency is __________ .
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If the system T.F. is
The differential equation representing the system is -
In the circuit below, delay of the EXOR and AND
Logic gates are 20 μs and 10 μs respectively, then the wave y' and y (with initial condition y = 1) will be :
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is :
.
.
.
= 600 Hz.
and y(s) by y(t) and x(s) by x(t) we get 
y(t) + 2
y(t) + 5
+ 2
+ 5
+ 6 = 
+ 4x 
