QUESTION $1$:

$[25$ marks$]$

Appendix A shows two views of a belt tensioner. This assembly consists of the following parts:

$\backslash$table$[[$Item $1,$dotsdotsdots.,Base$],[$Item $2,$dotsdotsdots.,Arm$],[$Item $3,$dotsdotsdots,Roller$],[$Item $4,$dotsdotsdots,Bush$],[$Item $5,$dotsdotsdots,M$16$ hexagon nut$],[$Item $6,$dotsdotsdots,M$16$ hexagon bolt$],[$Item $7,$dotsdots...,M$12$ hexagon bolt$]]$

Using the appropriate scale, draw the following detailed drawings according to firstangle orthographic projection: Do not add any hidden details and dimensions.

$1\mathrm{.}1.$ A full sectional front and left view of the base.

$1\mathrm{.}2.$ A full sectional front and left view of the arm.

$1\mathrm{.}3.$ A full sectional front view of the roller.

QUESTION $2$:

$[25$ marks$]$

Refer to Appendix B$,$ the intersection of a hexagonal prism with a square pyramid. Draw the interpenetration cure and develop the prism and pyramid, using any scale of your choosing. Marks are distributed as follows:

$2\mathrm{.}1.$ Linework

$(15)$

$2\mathrm{.}2.$ Correctness

$(10)$