Code No: 53003 Set No. 1
JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD II B.Tech. I Sem., I Mid-Term Examinations, August – 2012
STRENGTH OF MATERIALS – I Objective Exam
Name: ______________________________ Hall Ticket No.
Answer All Questions. All Questions Carry Equal Marks.Time: 20 Min. Marks: 10. A
I Choose the correct alternative: 1. Modulus of Elasticity is the ratio of [ ]
a) Stress to strain b) stress to original length c) deformation of original length d) all of these
2. The term deformation per unit length is applied for [ ]
a) stress b) modules of elasticity c)strain d)none of these
3. When a section is subjected to two equal and opposite pulls and the body tends to ___________ it’s length [ ] a) Increase b) decrease c) constant d)none
4. Point of contraflexture is a point where _______________ [ ]
a) Shear force changes sign b) bending moment changes sign c) SF is maximum d) BM is maximum
5. An anticlockwise moment causes __________ SF over the beam [ ]
a) Zero b)Positive c) negative d)none
6. The term _________ used for the total strain energy stored in a body [ ] a) Proof resilience b) modulus of resilience c) resilience d) All of the above
7. The neutral axis of a section is an axis, at which the blending stress is ____________ [ ]
a) Zero b) Maximum c) Minimum d) Infinity 8. When a cantilever is loaded at its free and maximum compressive stress shall develop at [ ]
a) Top fiber b)Neutral axis c) Bottom fiber d) Centre of gravity
9. An inverted T section is subjected to a SF ‘F’. The maximum shear stress will occur at [ ] a) top of the section b) junction of web and flange c) neutral axis of the section d) none
10. The ratio of τ max /τ avg for a rectangular section is [ ] a)1 b) 0 c) 1.5 d) 2.0
Cont……2
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Code No: 53003 :2: Set No. 1
II Fill in the blanks: 11. As the body undergoes deformation , its molecules set up some ___________ to deformation
12. When the load is applied suddenly the load (p) is ___________ throughout the process of deformation of
the bar
13. While calculating bending moment or SF of a section the beam will be assumed to be __________ 14. The _____________ beam is the beam with one end free and other end fixed
15. The maximum bending moment will occur at M, where _________ changes sign
16. If there is a sudden increase or decrease in the shear force diagram, it indicates that there is a ______
load or __________ at that point
17. The value of ______________ is same in tension and compression
18. In a cantilever, there is a _____________ stress above the neutral axis
19. In the theory of simply bending, the bending stress in the beam section varies_________
20. If the section is not symmetrical about x-x axis , the ___________ distribution diagram will also not be symmetrical
-oOo-
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