Related Questions

The strain energy stored in a body due to shear stress, is (where $$\tau $$ = Shear stress, C = Shear modulus and V = Volume of the body)
A $$\frac{{\tau {\text{V}}}}{{2{\text{C}}}}$$
B $$\frac{{2{\text{C}}}}{{\tau {\text{V}}}}$$
C $$\frac{{{\tau ^2}{\text{V}}}}{{2{\text{C}}}}$$
D $$\frac{{2{\text{C}}}}{{{\tau ^2}{\text{V}}}}$$
An R.C.C. beam not provided with shear reinforcement may develop cracks in its bottom inclined roughly to the horizontal at
A 25°
B 35°
C 45°
D 55°
When a beam of rectangular cross-section of width b and depth d, is subjected to a shear force F, the maximum shear stress induced will be
A $$\frac{{\text{F}}}{{{\text{bh}}}}$$
B $$\frac{{{\text{3F}}}}{{{\text{2bh}}}}$$
C $$\frac{{{\text{2F}}}}{{{\text{bh}}}}$$
D $$\frac{{{\text{4F}}}}{{{\text{bh}}}}$$
A ladder is resting against a vertical wall and its bottom is 2.5 m away from the wall. If it slips 0.8 m down the wall, then its bottom will move away from the wall by 1.4 m. What is the length of the ladder?
A 6.2 m
B 6.5 m
C 6.8 m
D \7.5 m
The distance from pipe boundary, at which the turbulent shear stress is one-third die wall shear stress, is (where R is the radius of pipe)
A $$\frac{1}{3}{\text{R}}$$
B $$\frac{1}{2}{\text{R}}$$
C $$\frac{2}{3}{\text{R}}$$
D $$\frac{3}{4}{\text{R}}$$
The main reason for cracks in masonry joints is:
A Moisture
B Sulphate
C Magnesium
D Sodium
Two beams, one of circular cross-section and the other of square cross-section, have equal areas of cross-sections. When these beams are subjected to bending,
A Both beams are equally economical
B Square beam is more economical
C Circular beam is more economical
D None of these
A marble ball is rolled on a smooth floor of a room to hit a wall. If the time taken by the ball in returning to the point of projection is twice the time taken in reaching the wall, the coefficient of restitution between the ball and the wall, is
A 0.25
B 0.50
C 0.75
D 1.0
A glass ball is shot to hit a wall from a point on a smooth floor. If the ball returns back to the point of projection in twice the time taken in reaching the wall, the coefficient of restitution between the glass ball and the wall is
A 0.25
B 0.33
C 0.40
D 0.50
The angle between the shear plane and _________ is called shear angle.
A Work surface
B Tool face
C Machine surface
D None of these

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