JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD
JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD B.Tech II MACHINE DRAWING Previous Question Paper (February - 2024 - R15)
Note: This question paper contains two parts A and B. i) Part- A for 30 marks, ii) Part - B for 45 marks.
(i) Part – A: 3 out of 4 questions must be answered.
(ii) Part – B: 1 Compulsory Question (No Choice) to be answered for 45 Marks.
Part A
Sketch the conventional representation of the following:
External threads
Answer
External threads are represented by two parallel lines. The crest (major diameter) is drawn with a thick continuous line, while the root (minor diameter) is represented by a thin continuous line. In the end view, the root is shown as a thin circle covering approximately three-quarters of the circumference.
Internal threads
Answer
Internal threads are represented by two parallel lines where the crest (minor diameter) is drawn with a thick continuous line and the root (major diameter) is drawn with a thin continuous line. In the end view, the crest is shown as a thick circle, and the root is represented by a thin circle covering three-quarters of the circumference.
Various materials
Answer
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Sketch the required views, indicating the proportions of a solid flange coupling used in marine engines to connect two shafts for the diameter 60mm.
Answer
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Draw the front and top views of double riveted double strap zig – zag butt joint to join 12 mm plates.
Answer
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Represent two views of hexagonal nut and square nut with proportions take the diameter of the bolt as 30 mm.
Answer
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Part B
Draw the sectional front view and top view of the assembled screw Jack from the given figure and part list. All dimensions are in mm.
Answer
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