Indira Gandhi National Open University (IGNOU) 2007 Diploma Civil Engineering Machine Drawing - Question Paper
BME-034
Diploma in Electrical and Mechanical Engineering
Term-End Examination
June, 2007
Time : 2 hours Maximum Marks : 70
Note : Answer all questions.
1. Answer any seven of the following questions : 7x2=14
(a) Name two types of drawing.
(b) What views are normally drawn in orthogonal projection of an object ?
(c) The root angles in BIS metric thread and BSW threads are respectively and__ .
(d) Choose correct answer out of the four choices. The pitch (p) and depth (h) of an Acme thread are related as
(i) p = 2h + 0'25 mm
(ii) p = 2h + 0-5 mm
(iii) p = 2h - 0-25 mm
(iv) p = 2h - 0-5 mm
(e) In a nut and bolt combination, the thickness of the
nut is t and thickness of the bolt head is t,. Choose n h
the correct answer.
(H) tn>th (iii) tn<th
(f) Name two head forms of rivets.
(g) The shortest height of head is carried by
___ head form and it is equal to _
times the diameter of the rivet shank.
(h) Name one part which is fitted on shaft with the help of a key and other part which is fitted on shaft without the help of a key.
(i) Which key makes deepest groove and which makes no groove in the shaft ?
2. Two steel plates, each 12 mm thick are jointed by a single riveted lap joint. Draw two views to full size. Show 4 rivets and section line in plan. 20
Two steel plates, each 30 mm thick, are jointed by an M 20 bolt and nut. Show two views of the joint.
3. Figure 1 shows 5 components of a knuckle joint. Assemble the parts and draw front elevation in section and side view in full.
S
o
H
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Figure 2 shows flanges, keys and shafts to be connected in a flange coupling. Assemble and draw elevation and side view in full. Note that nuts and bolts are to be added. |
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BME-034 4 1,000
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Attachment: |
| Earning: Approval pending. |
