Mechanical Engineering - Strength of Materials

6. 

The springs in cars are used to store strain energy.

A. Correct
B. Incorrect

Answer: Option B

Explanation:

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7. 

In a stress-strain diagram for mild steel, as shown in the below figure, the point A represents

A. elastic limit
B. upper yield-point
C. lower yield point
D. breaking point

Answer: Option A

Explanation:

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8. 

When the retained material is subjected to some superimposed or surcharged load, the total horizontal pressure due to surcharged load is (where p = Intensity of the supercharged load)

A.
B.
C.
D.

Answer: Option A

Explanation:

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9. 

The unit of Young's modulus is same as that of stress.

A. True
B. False

Answer: Option A

Explanation:

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10. 

In the below figure, the point B represents upper yield point.

A. Correct
B. Incorrect

Answer: Option A

Explanation:

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