When a bar is subjected to a change of temperature and its deformation is preven

CuriousTab

CuriousTab

Home Aptitude

Discussion

Home ‣ Mechanical Engineering ‣ Strength of Materials Comments

Question
When a bar is subjected to a change of temperature and its deformation is prevented, the stress induced in the bar is
Options
A. tensile stress
B. compressive stress
C. shear stress
D. thermal stress

Correct Answer

thermal stress

Strength of Materials problems

Search Results

4. For a given stress, the ratio of moment of resistance of a beam of square cross-section when placed with its two sides horizontal to the moment of resistance with its diagonal horizontal, is
Options
A. 1/2
B. 1
C. 1/2
D. 2

6. Whenever some external system of forces acts on a body, it undergoes some deformation. As the body undergoes some deformation, it sets up some resistance to the deformation. This resistance per unit area to deformation, is called
Options
A. strain
B. stress
C. pressure
D. modulus of elasticity

8. A simply supported beam 'A' of length l, breadth b and depth d carries a central point load W. Another bream 'B' has the same length and breadth but its depth is doubled. The deflection of beam 'B' will be double as compared to beam 'A'.
Options
A. Correct
B. Incorrect

9. A body is subjected to a direct tensile stress (?) in one plane. The shear stress is maximum at a section inclined at __________ to the normal of the section.
Options
A. 45� and 90�
B. 45� and 135�
C. 60� and 150�
D. 30� and 135�

10. The strain energy stored in a hollow circular shaft of outer diameter (D) and inner diameter (d) subjected to shear stress is
Options
A. x Volume of shaft
B. x Volume of shaft
C. x Volume of shaft
D. x Volume of shaft

Comments

More in Mechanical Engineering: