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In viscous dampers, energy gets absorbed by _______ fluid which passes between the piston-cylinder arrangement.(a) Aluminium-based(b) Iron-based(c) Silicone-based(d) Copper-basedThis question was posed to me in an internship interview.This key question is from Earthquake Resistant R.C. Buildings in division Earthquake Resistant Buildings of Construction & Building Materials

Answer»

The correct answer is (c) Silicone-based

To elaborate: There are two technologies to protect buildings from the effects of earthquakes – SEISMIC DAMPERS and base isolation devices. Various types of seismic dampers used are VISCOUS dampers, yielding dampers and friction dampers. In viscous dampers, energy gets ABSORBED by silicone-based fluid which passes between the piston-cylinder arrangement.



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