What material is used to make the material of the pads of the brakes?
(a) pads using asbestos
(b) pads using metal wires
(c) pads using copper
(d) pads using the asbestos interlaced with metal wires.
This question was addressed to me in an international level competition.
My question comes from Construction of Hydro-Generators in section Design of Synchronous Machines of Design of Electrical Machines