Control System MCQs

As compared to a closed ioop system, an open loop system is

Consider the following statements regarding time-domain analysis of a control system :1. Derivative control improves system's transient performance 2. Integral control does not improve system's steady state performance 3. Integral control can convert a second order system into a third order system Of these statements

The principles of homogenity and super-position are applied to

When a unit-step input is applied, a second order underdamped system has a peak overshoot of OP occurring at tmax. If another step input equal in magnitude to the peak overshoot OP is applied at t = tmax, then the system will settle down at

Which one of the following statements are true of a type 1 system having unity gain in the forward path and a unity feedback? 1. Positional error constant K is equal to infinity. 2. Acceleration error constant Ka is equal to zero. 3. Steady-state error ess to a unit step displacement input is equal to one. Select the correct answer using the codes given below Codes :

A process with open-loop model Ke-st G (s) TS + 1 is controlled by a P1D controller. For this process.

A linear discrete-time system has the characteristic equation, z3 -0.81z = 0 The system

Signal flow graph is used to find

The step error coefficient of a system (s + 6) (s + 1) with unity feedback is