(a) (i) Sketch a 4-speed sliding mesh gear arrangement with third speed engaged.
(ii) Show the power path of the drive in the third gear.
(b) Label the following parts of the sketch in (a)(i):
(i) input shaft;
(ii) main shaft;
(iii) constantmesh gear;
(iv) lay shaft.
(c) State two demerits of sliding mesh gearbox.