Strength-of-materials Questions Set 19:
What is the angle between normal stress and tangential stress called?
Solution:
What is the shear stress distribution over a rectangular cross-section?
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For a rectangular beam of size 240 mm × 400 mm, calculate the section modulus.
Solution:
The correct differential equation for the deflection of a beam is:
Solution:
The property by which a body returns to its original shape after removal of the applied force is called __________ .
Solution:
Consider the following data for a body in the state of stress:
σx = -6 MPa
σy = 4 MPa
τxy = -8 MPa
What is the value of the maximum tensile stress (in MPa)?
Solution:
When do shear forces govern the design of a beam?
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Find the thermal stress of a 2m long bar that is fixed at both its ends and is maintained at 60 degrees Celsius. If the values of the coefficient of thermal expansion (α) and Young's modulus (E) are 17 × 10^-6 /°C and 90 MPa respectively.
Solution:
In the elastic zone of a tensile test, the relationship between tensile stress and strain is:
Solution:
A circular section tapering bar is rigidly fixed at both ends. The diameter changes from 75 mm at one end to 150 mm at the other end, over a length of 1.2 m. If the temperature is raised by 32°C, calculate the maximum stress induced in the bar. (E = 200 GPa and α = 12 × 10-6 / °C)
Solution:
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