Question

29. Which would be isotropic: (a) a nylon filament, (b) an extruded pipe, or (c) ebonite?

30. Which will have the higher relaxation time: (a) unvulcanized rubber or (b) ebonite?

31. In which element or model for a viscoelastic body, (a) Maxwell or (b) Voigt–Kelvin, will the elastic response be retarded by viscous resistance?

33. Which of the following might you expect would increase their conductivity when doped: (a) PS, (b) PPO, (c) nylon 66, or (d) aramids?

Answer 1

The conductivity of the meterial can be increased by it's dopping but we cannot injected the electrons.