Q. A discrete-time all-pass system has two of its poles at 0.25∠0° and 2 ∠30° Which one of the following statements about the system is TRUE? A. It has two more poles at 0.5Ð30and 4Ð0 . B. It is stable only when the impulse response is two-sided. C. It has constant phase response over all ...
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Q. Let M be a real 4×4 matrix. Consider the following statements: S1: M has 4 linearly independent eigenvectors. S2: M has 4 distinct eigenvalues. S3: M is non-singular (invertible). Which one among the following is TRUE? (A) S1 implies S2 ...
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Q. The points P, Q, and R shown on the Smith chart (normalized impedance chart) in the following figure represent: A. P: Open Circuit, Q: Short Circuit, R: Matched Load B. P: Open Circuit, Q: Matched Load, R: Short Circuit C. P: Short Circuit, Q: Matched Load, R: Open Circuit D. P: ...
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Q. A function 𝐹(𝐴, 𝐵, 𝐶) defined by three Boolean variables A, B and C when expressed as sum of products is given by 𝐹 = 𝐴̅ ⋅ 𝐵̅ ⋅ 𝐶̅ + 𝐴̅ ⋅ 𝐵 ⋅ 𝐶̅ + 𝐴 ⋅ 𝐵̅ ⋅ 𝐶̅ where, 𝐴̅, 𝐵̅, and 𝐶̅ are the complements of the respective variables. The product of sums (POS) form of the function F is (A) ...
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Q. The logic function f (X , Y) realized by the given circuit is (A) NOR (B) AND (C) NAND (D) XOR Ans: XOR
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Q. In a p-n junction diode at equilibrium, which one of the following statements is NOT TRUE? A. The hole and electron diffusion current components are in the same direction. B. The hole and electron drift current components are in the same direction. C. On an average, holes and electrons ...
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Q. Consider 𝑝(𝑠) = 𝑠3 + 𝑎2𝑠2 + 𝑎1𝑠 + 𝑎0 with all real coefficients. It is known that its derivative 𝑝′(𝑠) has no real roots. The number of real roots of 𝑝(𝑠) is (A) 0 (B) 1 (C) 2 (D) 3 Ans: 1 Sol: Given p(s) = ...
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Q. The Nyquist stability criterion and the Routh criterion both are powerful analysis tools for determining the stability of feedback controllers. Identify which of the following statements is FALSE: A. Both the criteria provide information relative to the stable gain range of the system. B. ...
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Q. A good transimpedance amplifier has A. low input impedance and high output impedance. B. high input impedance and high output impedance. C. high input impedance and low output impedance. D. low input impedance and low output impedance. Ans: low input impedance and low output ...
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Q. In the circuit shown below, the op-amp is ideal and Zener voltage of the diode is 2.5 volts. At the input, unit step voltage is applied, i.e. 𝑣𝐼𝑁(𝑡) = 𝑢(𝑡) volts. . Also, at 𝑡 = 0, the voltage across each of the capacitors is zero. The time 𝑡, in milliseconds, at which the output voltage ...
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