Download PTU B.Tech 2021 Jan AE 3rd Sem 76399 Strength Of Materials Question Paper

Download PTU (Punjab Technical University) B.Tech (Bachelor of Technology) / BE (Bachelor of Engineering) 2021 January AE 3rd Sem 76399 Strength Of Materials Previous Question Paper

Roll No.
Total No. of Pages : 02
Total No. of Questions : 18
B.Tech. (AE) (2018 Batch) (Sem.?3)
STRENGTH OF MATERIALS
Subject Code : BTAE301-18
M.Code : 76399
Time : 3 Hrs. Max. Marks : 60
INST RUCT IONS T O CANDIDAT ES :
1 .
SECT ION-A is COMPULSORY cons is ting of TEN questions carrying TWO marks
each.
2 .
SECT ION-B c ontains F IVE questions c arrying FIVE marks eac h and s tud ents
have to atte mpt any FOUR q ues tions.
3 .
SECT ION-C contains THREE questions carrying T EN marks e ach and s tudents
have to atte mpt any T WO questio ns.
SECTION-A
Answer briefly :
1.
What is the difference between thick and thin cylinders?
2.
Define the term modulus of rigidity.
3.
What is the use of section modulus?
4.
Define neutral axis.
5.
What are principal planes?
6.
What do you mean by buckling of beams?
7.
State Saint Venant's principal.
8.
Define the term plasticity.
9.
What do you mean by rupture strength?
10. What do you mean equivalent modulus of elasticity?
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SECTION-B
11. Derive the relationship for the extension due to self-weight in bar of uniform strength?
12. Derive the relationship between modulus of elasticity (E) and bulk modulus of elasticity
(K).
13. Draw the shear stress and bending moment diagram of a SSB of length 10m with point
load of 5 kN and the mid-point of the beam.
14. A beam 30 cm deep of symmetrical section has I = 8000 cm4 and is simply supported
over a span of 8 meters. Calculate the uniformly distributed load it may carry if the
maximum stress INS not exceeds 110 N/mm2.
15. Determine the slopes at the ends and the deflection at the mid-span of a SSB of length
L m carrying udl of w kN/m over its whole length. Also plot the slope and deflection
diagrams for the beam.
SECTION-C
16. A solid shaft of 250 mm diameter has the same cross-sectional area as the hollow shaft of
the same material with inside diameter of 200 mm. Find the ratio of power transmitted by
the two shafts for the same angular velocity and compare the angle of twist in equal
lengths of these shafts, when stressed to same intensity.
17. Drive the bending moment equation stating all the assumptions and using simple theory
of bending.
18. Drive the Euler's formula for long columns having both the ends hinged.
NOTE : Disclosure of Identity by writing Mobile No. or Making of passing request on any
page of Answer Sheet will lead to UMC against the Student.
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