Which of the following materials can be used to make a rotor blade of a wind turbine apart from glass fibre reinforced polyester (GRP)?

Which of the following materials can be used to make a rotor blade of a wind turbine apart from glass fibre reinforced polyester (GRP)? Correct Answer Epoxy, carbon fibre

Apart from GRP, epoxy and carbon fibre can be used to make rotor blades. Though carbon fibre is lighter and has higher material strength, it is expensive. Silicon and germanium are generally used in semiconductor industry.
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