Mechanical Engineering - Strength of Materials

11. 

The tensile test is carried on __________ materials.

A. ductile
B. brittle
C. malleable
D. plastic

Answer: Option A

Explanation:

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12. 

If percentage elongation of a certain specimen made of a material 'A' under tensile test is 30% and the percentage elongation of a specimen with same dimensions made of another material 'B' is 40%, then material 'B' is more ductile than material 'A'.

A. Correct
B. Incorrect

Answer: Option A

Explanation:

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13. 

A fixed beam is one which is fixed at __________ of its ends.

A. one
B. both

Answer: Option B

Explanation:

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14. 

Factor of safety is defined as the ratio of

A. ultimate stress to working stress
B. working stress to ultimate stress
C. breaking stress to ultimate stress
D. ultimate stress to breaking stress

Answer: Option A

Explanation:

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15. 

The value of equivalent length is taken to be half of the actual length of a column with one end fixed and the other end free.

A. Agree
B. Disagree

Answer: Option B

Explanation:

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