Two bars of different materials and same size are subjected to the same tensile

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Question
Two bars of different materials and same size are subjected to the same tensile force. If the bars have unit elongation in the ratio of 2:5, then the ratio of modulus of elasticity of the two materials will be
Options
A. 2:5
B. 5:2
C. 4:3
D. 3:4

Correct Answer

5:2

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4. A simply supported beam 'A' of length l, breadth b and depth d carries a central load W. Another beam 'B' of the same dimensions carries a central load equal to 2 W. The deflection of beam 'B' will be __________ as that of beam 'A'.
Options
A. one-fourth
B. one-half
C. double
D. four times

5. According to Euler's column theory, the crippling load of a column is given by p = ?² EI/Cl². In the Euler's formula, the value of C for a column with one end fixed and the other end free, is
Options
A. 1/2
B. 1
C. 2
D. 4

7. The given figure shows the Mohr's circle of stress for two unequal and like principal stresses (?_x and ?_y) acting at a body across two mutually perpendicular planes. The resultant stress is given by
Options
A. OC
B. OP
C. OQ
D. PQ

8. When a body is subjected to bi-axial stress i.e. direct stresses (?_x) and (?_y) in two mutually perpendicular planes accompanied by a simple shear stress (?_xy), then maximum shear stress is
Options
A.
B.
C.
D.

9. In order to avoid sliding of masonry dam, the force of friction between the dam and soil should be at least __________ the total water pressure per metre length.
Options
A. equal to
B. 1.5 times
C. double
D. 2.5 times

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