Q. 26 – Q. 55 carry two marks each.
Q.26 The Boolean expression [(a+b'+c+d')
+ (b+c')]'simplifies to
Q.27 For the circuit shown below, taking the opamp as ideal, the output voltage Vout in terms of the input voltages V1 , V2 and V3 is
(A)1.8V1 + 7.2V2 -V3
(B) 2V1 + 8V2 - 9V3
(C) 7.2V1 + 1.8V2 -V3
(D) 8V1 + 2V2 - 9V3
Answer:(D) 8V1 + 2V2 - 9V3
For the system shown above, the minimum sampling rate required to sample y(t), so that y(t) can be uniquely reconstructed from its samples, is
Answer: (D) ∞
Q.29 The value of the integral
is equal to
Answer: (C) 1
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