KERALA UNIVERSITY Class 6 design of machine elements i Question Paper 2013

Practice authentic previous year questions for better exam preparation.

Sample Questions

Design a leaf spring to carry a load of 3400 N and placed over a span of 800 mm . The spring can deflect by 50 mm . Consider, allowable bending stress for the spring material as 350 MPa and $\mathrm{E}=2 \times 10^{5} \mathrm{MPa}$.
Design a helical spring of wire diameter 6 mm and spring index 6 is acted by an initial load of 800 N . After compressing it further by 10 mm the stress in the wire is $500 \mathrm{MPa} . \mathrm{G}=84000 \mathrm{MPa}$. ( $4 \times 20=80$ Marks)
What is the curvature effect in a helical spring? How does it vary with spring index?
What do you understand by shaft, axle and spindle?
What should be essential qualities of a rivet and its material? ( $\mathbf{5} \boldsymbol{\times} \mathbf{4} \boldsymbol{=} \mathbf{2 0}$ Marks) P.T.O. (Answer any one questions from each Module. Each carries 20 marks)