Questions 14 to 20 refer to the mechanism shown (not to scale) below. The two sliders that make up link 3 are welded together at right angles. The angle 02 changes at a constant rate of 0, = 2 rad/s. 12 3 02 71 = 5 cm 14. If link 1 is fixed, this mechanism is a a) slider crank b) Rapson slide c) scotch yoke d) trammel e) Oldham coupling 15. If link 2 is fixed, this mechanism is a a) slider crank b) Rapson slide c) scotch yoke d) trammel e) Oldham coupling 16. If link 3 is fixed, this mechanism is a a) slider crank b) Rapson slide c) scotch yoke d) trammel e) Oldham coupling