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Glass-Fibre Reinforced Plastic (GRP, "fiberglass") is widely used because:
A{'text': 'Glass fibers offer good strength and stiffness at LOW COST compared to carbon — making GRP attractive for boats, automotive panels, wind turbine blades', 'label': 'B'}
B{'text': 'It is electrically conductive', 'label': 'D'}
C{'text': 'It is biodegradable', 'label': 'C'}
D{'text': 'Glass fibers have higher modulus than carbon fibers', 'label': 'A'}
Answer & Solution
Correct answer: A. {'text': 'Glass fibers offer good strength and stiffness at LOW COST compared to carbon — making GRP attractive for boats, automotive panels, wind turbine blades', 'label': 'B'}
Glass fibers: tensile strength ~3 GPa, modulus ~70-90 GPa, but much cheaper than carbon. GRP dominates the volume market for composite applications where cost matters more than ultimate stiffness.
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