problem 1) Sketch the following threads taking pitch = 15 mm.

a) Multiple start threads

b) Buttress thread sections

c) Knuckle thread sections

problem 2) Sketch front view and side view of a square headed bolt of 30 mm diameter and 120 mm length with a washer and a hexagonal nut.

problem 3)i) Sketch or sketch free hand any two of the following locking devices:

a) Castle nut

b) Sawn nut

c) Split pin lock nut 9

ii) Sketch freehand any three various types of machine screws.

problem 4) prepare steps to draw a knuckle joint using CAD software.

problem 5) Draw the top view and sectional front view of a single riveted double cover butt joint taking diameter of the rivet = 25 mm.

problem 6)a) Give drawings of any three keys and two different cotters.

b) Draw any five rivet heads and name them.

problem 7) Sketch front view and side view of sleeve and cotter joint. You may use instruments or sketch free hand.

problem 8) Provide conventional representation of left hand and right hand external threads.