Question

In mechanical shock absorbers, the friction action of metallic discs is utilized to control the spring action whereas in hydraulic shock absorber fluid it is used to ............... .

• A. cool the spring
• B. lubricate the spring
• C. provide spring action
• D. damp the oscillations

Hint:

Tip: Hydraulic shock absorber → fluid damping = smooth ride!

Answer 1

The Correct Option is D

Shock absorbers are used to control unwanted spring motion in vehicles.
In mechanical shock absorbers, friction discs use rubbing action to resist spring oscillations.
In hydraulic shock absorbers, fluid is forced through small orifices to create resistance.
This fluid action converts kinetic energy into heat and thus damps the oscillations of the suspension spring.
This prevents continuous bouncing and ensures a smoother ride.
The fluid does not cool, lubricate, or create spring action — its main function is damping.
Therefore, the correct answer is damp the oscillations.