This set of Control Systems Multiple Choice Questions & Answers (MCQs) focuses on “Stability Analysis”. 1. First column elements of the Routh’s tabulation are 3, 5, -3/4, ½, 2. It means that there are: a) Is one root in the left half of s-plane b) Are two roots in the left half of s-plane c) … Read more
This set of Control Systems Multiple Choice Questions & Answers (MCQs) focuses on “The Z- and S-Domain Relationship”. 1. The auto-correlation function of a rectangular pulse of duration T is a) A rectangular pulse of duration T b) A rectangular pulse of duration 2T c) A triangular pulse of duration T d) A triangular pulse … Read more
This set of Control Systems Multiple Choice Questions & Answers (MCQs) focuses on “The Z-transform Analysis of Sampled-Data Control Systems”. 1. The DFT of a signal x(n) of length N is X(k). When X(k) is given and x(n) is computed from it, the length of x(n) a) Is increased to infinity b) Remains N c) … Read more
This set of Control Systems Questions and Answers for Campus interviews focuses on “The inverse Z-transform and Response of Linear Discrete Systems”. 1. Unit step response of the system described by the equation y(n) +y(n-1) =x(n) is: a) z2/(z+1)(z-1) b) z/(z+1)(z-1) c) z+1/z-1 d) z(z-1)/z+1 2. Inverse z-transform of the system can be calculated using: … Read more
This set of Control Systems Multiple Choice Questions & Answers (MCQs) focuses on “The Z-Transfer Function”. 1. Consider the following statements regarding a linear discrete-time system: H (z) = z2+1/(z+0.5)(z-0.5) 1. The system is stable 2. The initial value of h(0) of the impulse response is -4 3. The steady-state output is zero for a … Read more
This set of Control Systems Multiple Choice Questions & Answers (MCQs) focuses on “The Z-Transform”. 1. The discrete-time signal x (n) = (-1)n is periodic with fundamental period a) 6 b) 4 c) 2 d) 0 2. The frequency of a continuous time signal x (t) changes on transformation from x (t) to x (α … Read more
This set of Control Systems Multiple Choice Questions & Answers (MCQs) focuses on “Difference Equations”. 1. Difference equation model results in: a) Sampled-data systems b) Numerical analysis of continuous time systems c) Continuous time feedback systems d) Both a and b 2. Difference equation is used in : a) Discrete time analysis b) Continuous time … Read more
This set of Control Systems Multiple Choice Questions & Answers (MCQs) focuses on “Signal Reconstruction”. 1. Sampling can be done by: a) Impulse train sampling b) Natural sampling c) Flat-top sampling d) All of the mentioned 2. The first step required to convert analog signal to digital is : a) Sampling b) Holding c) Reconstruction … Read more
This set of Control Systems Multiple Choice Questions & Answers (MCQs) focuses on “Spectrum Analysis of Sampling Process”. 1. Statement (I): Aliasing occurs when the sampling frequency is less than twice the maximum frequency in the signal. Statement (II): Aliasing is a reversible process. a) Both statement (I) and Statement (II) are individually true and … Read more
This set of Control Systems Multiple Choice Questions & Answers (MCQs) focuses on “Feedback Compensation”. 1. Which of the following are the not characteristics of the closed loop systems? a) It does not compensate for disturbance b) It reduces the sensitivity of plant-parameter variations c) It does not involve output measurements d) It does not … Read more
