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ISRO ME 2019 STRENGTH OF MATERIALS 4

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Question 1

The ratio of the core of a rectangular section to the area of the rectangular section when as a short column is

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Question 2

In a bi-axial stress problem, the stresses in x and y directions are $Description: D:\GradeStack Courses\GATE Tests (Sent by Ravi)\GATE-EE-ME-19-Mar\GATE-ME-2000_files\image031.png$ and $Description: D:\GradeStack Courses\GATE Tests (Sent by Ravi)\GATE-EE-ME-19-Mar\GATE-ME-2000_files\image032.png$ The maximum principal stress in MPa is

Question 3

Compare the ratio of volumetric increase in cylindrical and spherical shell when they are subjected to same internal pressure and both have same d/t ratio, where d is the internal diameter of the vessel and t is the thickness of the vessel. It is given that poisson ratio is 0.3. Neglect the stress in radial direction.

Question 4

Two bars each of length L and of the same material are subjected to the same axial tensile force P. The first bar has a uniform diameter 2d. The second bar has a diameter d for length l and a diameter 2d for the remaining length. The ratio of the strain energies of the two bars U₁/U₂ is _________.

Question 5

The ratio of elongation of a conical and rectangular bar of same length under its own weight is __________.

Question 6

A two meter length of steel shafting is to transmit 130 kW at 3600 RPM through a flexible coupling from a motor to pump. Assuming maximum shear stress as 40 MPa, the required diameter (in mm) of shaft is __________.

Question 7

A thin strip of copper (E = 120 GPa) having length L and thickness, t = 1 mm is bent into a circle and held with the ends just touching. The maximum bending stress in the strip is limited to 250 MPa. The length of the strip is

Question 8

A copper bar of 25 cm length is fixed by means of supports at its ends. Supports can yield (total) by 0.01 cm. If the temperature of the bar is raised by 100 °C, then the stress induced in the bar for if α_c = 20×10^-6/°C and E_c = 0.5×10⁵ MPa will be

Question 9

Which material has highest value of poission’s ratio?

Question 10

For a simply supported beam of length ‘l’ subjected to downward load of uniform intensity w, match List-I with List –II and selected the correct answer using the codes given below the lists:
List-I
A- Slope of shear force diagram
B- Maximum shear force
C- Maximum deflection
D- Magnitude of maximum bending moment
List-II
1- $Description: Description: E:\Gate\SSC JE Mechanical Part 1\Made Easy Questions\04_SOM_BLok_files\image001.png$
2- W
3- $Description: Description: E:\Gate\SSC JE Mechanical Part 1\Made Easy Questions\04_SOM_BLok_files\image002.png$
4- $Description: Description: E:\Gate\SSC JE Mechanical Part 1\Made Easy Questions\04_SOM_BLok_files\image003.png$

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ESE & GATE ME Strength of Materials

Jul 7ESE & GATE ME