Janardan Rai Nagar Rajasthan Vidyapeeth 2007 B.Tech Aeronautical Engineering BTAE3-ADVANCE STRENGTH OF MATERIAL - Question Paper

BIT-V TOTAL PAGES:03
BACHELOR IN TECHNOLOGY
(SEMESTER - V)(AERONAUTICAL)
BTAE3-ADVANCE STRENGTH OF MATERIAL
TIME: 03 HOURS MAX. MARKS: 75

GENERAL INSTRUCTIONS:
1. Question paper is divided into 3 groups
2. Each group is of 25 marks every
3. Figure to the right in bracket shows mark
4. Assume suitable data if necessary
GROUP A: ans any 3 ques.. ques. No. one is compulsory.
Q.1 What are the different kinds of springs? Distinguish clearly ranging from bending spring and torsion spring (05)
Q.2. Obtain a relation for the stress induced in a body, if a load P is applied with an impact. (10)
Q.3. Derive a relation for the Eulers crippling load for a column when it has both ends hinged. (10)
Q.4. Derive a relation ranging from modulus of elasticity and modulus of
rigidity. (10)
Q.5. Prove ?/R=C?/L in case of torsion of a circular shaft. (10)
GROUP B: ans any 3 ques.. ques. No. six is compulsory.
Q.6. Write notes on 1.point of contraflexture 2.principle of superposition.(05)
Q.7. An alloy hollow circular column of 200mmexternal and 160mm internal diameteris 5m long and fixed at its both ends.It is subjected to a load of 120KN at aneccentricity of 20mm from the geometrical axis; Determine the maximum stress induced in the column part.Take E as
120GPA (10)
Q.8 Hollow steel shaft of 300mm external diameter and 200mm internal diameter has to be changed by a solid alloy shaft. Assuming the identical values of polar modulus for boh compute the diameter of the latter and work out the ratio of their torsional rigidities, take C for steel as 2.4C for alloy. (10)
Q.9 A simply supported beam 6M long is carrying a uniformly distributed load of5KN/M over a length of 3M from the right end. Draw the S.F.and B.M. diagrams calcuate the maximum B.M. on the part. (10)
Q.10 An open coil helical spring made up of 10mm diameter wire and of mean diameter of 100mm has 12 coils angle of helix being 15ºDetermine the axial deflection and the intensities of bending and shear stresses under an axial load of 500N. Take C as 80GPA and E as 200GPA. (10)

GROUP C: All ques. are Compulsory.
Q.11 Fill in the blanks (each ques. carries two marks)
(i) Modulus of elasticity is the ratio of __________.
(ii) In a composite section, the number of various material is __________.
(iii) When the temperature of a body is increased, the stress include will be __________.
(iv) The bulk modulus of a body is equal to __________.
(v) The maximum slope of a carrilever carrying a point load at its free and is at the __________.
Q.12 Multiple option ques.. (Each ques. carries two marks)
(i) Modulus of elasticity is the ratio.
(a) stress to strain (b) stress to original length (c) determine to original length (d) all of these.
(ii) The part modulus of a rectangular part having width & depth is
(a) bd/6 (b) bd2/6 (c) bd3/6 (d) b2d/6
(iii) Which of the subsequent is the composit part.
(a) hollow cylinder part (b) T-section (c) Z-section (d)both ‘b’& ‘c’
(iv) The minimum stress intensity in the above case is
(a) W/A(1-e/b) (b) W/A(1-2e/b) (c) W/A(1-3e/b) (d) W/A(1-6e/b)
(v) In the theory of simply bending the bending stress in the beam part varies.
(a) linearly (b) parabolically (c) elliptically (d) none of them

Q.13 True or false (each ques. carries one mark).
(i) The maximum stress produced in a bar of tapering part is at smaller end.
(ii) A composite part contains four various materials. The stresses in all the various materials will be equal
(iii) The proof resilience per unit area is called modulus of resilience.
(iv) When a solid shaft is subjected to torsion the shear stress induced in the shaft at its center is zero.
(v) The planes carrying direct stress and shear stress is called principal planes.

Earning:   Approval pending.