As you have asked about the Karunya University old model question paper of machine elements, see below for details

PART –A (10 x 1 = 10 MARKS)
1.The ratio of linear stress to linear strain is called _________.
2.The factor of safety for steel and for steady load is _________.
3.The maximum bending stress, in a curved beam having symmetrical section, always occur, at
the _________.
4.Rankine’s theory is used for _________.
5.Factor of safety for fatigue loading is the ratio of_________.
6.A bolt of M 24× 2means that _________.
7.A transmission shaft subjected to bending loads must be designed on the basis of _________.
8.The coefficient of fluctuation of speed is the_________ of maximum fluctuation of speed and the mean speed.
9.When helical compression spring is cut into halves,the stiffness of the resulting spring will be _________.
10.Two shafts A and B are made of the same material .The diameter ofthe shaft A is twice as that of shaft B. The power transmitted by the shaft A will be_________
of shaft B.
PART –B (5 x 3= 15MARKS)
11.How is factor of safety defined for brittle and ductile materials?
12.Define endurance limit. What are the factors affecting endurance strength?
13.What are differentialand compound screws?
14.What are the purposes in machinery for which couplings are used?
15.What are the stresses involved in crank web?
PART –C (5 x 15= 75MARKS)
16.An unknown weight falls through 10 mm on a collar rigidly attached to the lower end of a vertical bar 3 m long and 600 mm2 in section. If the maximum instantaneous extension is known to be 2 mm, what is the corresponding stress and the value of unknown weight? Take E = 200kN/mm2.
(OR)
17.The load on a bolt consists of an axial pull of 10 kN together with a transverse shear force of 5 kN. Find the diameter of bolt required according to
i)Maximum Principal Stress theory
ii)Maximum shear stress theory

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Attached Files

Karunya University old question paper of Machine elements.pdf (109.2 KB, 137 views)