Question

Zero initial condition for a system means

(a) Input reference signal is zero

(b) Zero stored energy

(c) Initial movement of moving parts

(d) System is at rest and no energy is stored in any of its components

The question was asked in an international level competition.

Question is taken from Control of the Effects of Disturbance Signals by Use of Feedback in division Feedback Characteristics of Control Systems of Control Systems

Answer 1

Right answer is (d) System is at rest and no energy is stored in any of its components

The explanation: Zero initial condition means that the system is at rest and no energy is stored in any of its component.