Solution of State Equations
Solution of State Equations 1. Which of the following is an electromechanical device ? a) Induction relay b) Thermocouple c) LVDT d) Any of the mentioned Answer: c Explanation: LVDT…
Diagonalization
Diagonalization 1. State models presented employed: a) Physical variables b) Phase variables c) Canonical variables d) All of the mentioned Answer: d Explanation: State models are used in the state…
State Variables & Linear Discrete Time Systems
State Variables & Linear Discrete Time Systems 1. Which of the following can be used as a tacho generator in control systems? a) Microsyn b) DC servomotor c) AC servomotor…
State Models for Linear Continuous Time Systems
State Models for Linear Continuous Time Systems 1. Consider the following servomotors: 1. AC-two phase servomotor 2. DC servomotor 3. Hydraulic servomotor 4. Pneumatic servomotor The correct sequence of these…
Concepts of State, State Variables & State Model
Concepts of State, State Variables & State Model 1. The transfer function for the state representation of the continuous time LTI system: dq(t)/dt=Aq(t)+Bx(t)Â Y(t)=Cq(t)+Dx(t) is given by: a) C(sI-A)-1B+D b) B(sI-A)-1B+D…
Compensation Techniques : Control Systems
Compensation Techniques 1. Assertion (A): The closed loop stability can be determined from the poles of an open loop system and the polar plot of the frequency response. Reason (R):…
Stability Analysis
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…
Z & S Domain Relationship
Z & 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…
Z-transform Analysis of Sampled-Data Control Systems
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…
The inverse z-transform & Response of Linear Discrete Systems
The inverse z-transform & 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…
