1. 5 Trefniadau Golau Stryd LED
- a. unochrog
- b. dwyochrog fesul cam
- c. cymesuredd dwyochrog
- d. cymesuredd canolog
- e. ataliad traws
2.How llawer o fetrau rhwng 2pcs golau stryd LED?
| Lled y ffordd | 3-5M | 6-8M | 9-11M | 12-18M |
| Uchder postyn lamp | 4M | 6M | 8M | 12M |
| GAP | 8-12M | 15-20M | 25-30M | 30-50M |
| Trefniant lamp | a | b | d | d |
| Math o ffordd | Stryd breswyl | Ffordd wledig | Prif ffordd drefol | Ffordd gyflym |