A rectangular block of size 400mm x 50mm x 50mm is subjected to a shear stress of 500kg/cmÂ². If the modulus of rigidity of the material is 1Ã—10â¶ kg/cmÂ², the strain energy will be ______.

Civil Engineering : Strength of Materials - Quiz(MCQ)

125 kg-cm

100 kg-cm

500 kg-cm

1000 kg-cm

Correct Answer : 125 kg-cm

Explanation : Strain energy stored = τ²V/2G = 500²/2×10â¶ x 40x5x5 = 125 kg-cm.

Recently Updated in Strength of Materials Questions

The structures constructed along are distributaries are called as _______

Inlets

Outlets

Channels

Distributaries

Correct Answer : Option (B) : Outlets

Explanation : An outlet is a simple and small irrigation structure which is constructed along the distributaries. The amount of water that is withdrawn through the outlet is in proportion to the area that is irrigated below respective point.

The upstream slope recommended for sand and gravel with RCC core wall is ______

2.5:1

1:2

3:1

1.5:1

Correct Answer : Option (A) : 2.5:1

Explanation : According to Terazghi, the following upstream slopes should be recommended.

1. Homogeneous well graded – 2.5 : 1
2. Homogeneous coarse silt – 3 : 1
3. Sand and gravel with RCC core wall – 2.5 : 1.

Major distributaries discharge varies from _______

0.25 to 5 cumecs

2 to 4 cumecs

1.5 to 5 cumecs

1.2 to 5 cumecs

Correct Answer : Option (A) : 0.25 to 5 cumecs

Explanation : The major distributary takes off from a branch canal to distribute the water to various parts of the field. The supply of the water varies from 0.25 to 5 cumecs.