Discussion
The transient response of a system is mainly due to :
Answer: C
The transient response is mainly due to stored energy.
A system responds to a sudden change of input with a transient because its energy-storing elements, such as the capacitance and inductance in an electrical circuit or the mass and spring in a mechanical one, cannot change their stored energy instantaneously. The transient is the period during which energy is redistributed among these elements until the system reaches its new steady state. A purely resistive system, with no storage, would have no transient.
Inertia is one form of energy storage (kinetic), so it is part of the answer but not the general cause. Friction dissipates energy and affects how quickly transients die out rather than causing them. 'Internal forces' is not a recognised cause.
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