JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD
JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD B.Tech II Year MACHINE DRAWING AND COMPUTER AIDED GRAPHICS Previous Question Paper (December - 2017 - R15)
Answer any THREE questions from Part-A. Part-B is Compulsory.
Part A
Draw the following thread profiles and mark proportions.
Answer
The Whitworth thread has a triangular profile with an included angle of 55°. The crest and root are rounded with a radius equal to 0.1373P, where P is the pitch. The depth of the thread is 0.6403P.
Answer
The Buttress thread is designed to withstand force in one direction only. It features one flank perpendicular to the axis of the screw and the other flank at an angle of 45°. The depth of the thread is 0.75P, and both the crest and root are flat.
Answer
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Draw the sectional front view (bottom half in section) of the cotter joint with sleeve if the diameter of the shaft is 30 mm.
Answer
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Draw sectional front view and top view of the double riveted, zig zag lap joint with diameter of rivet as 18 mm.
Answer
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Give neat and dimensioned sketches of the following:
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Part B
Draw the following views of assembly of Eccentric Mechanism.
Answer
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