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Engineering Mechanics

Engineering Mechanics
The unit of moment of inertia of an area is

kg-m-s2
kg/m2
m4
kg-m2

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Engineering Mechanics
If a given force (or a given system of forces) acting on a body __________ the position of the body, but keeps it in equilibrium, then its effect is to produce internal stress in the body.

Does not change
Change
None of these
Changes periodically

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Engineering Mechanics
If a suspended body is struck at the center of percussion, then the pressure on die axis passing through the point of suspension will be

Infinity
Maximum
Minimum
Zero

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Engineering Mechanics
The range of projectile (R) on an upward inclined plane is

g. cos² β/2u². sin (α + β). cos α
g. cos² β/2u². sin (α - β). cos α
2u². sin (α - β). cos α/g. cos² β
2u². sin (α + β). cos α/g. cos² β

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Engineering Mechanics
When a body falls freely under gravitational force, it possesses __________ weight.

Minimum
No
None of these
Maximum

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Engineering Mechanics
Moment of inertia of a rectangular section having width (b) and depth (d) about an axis passing through its C.G. and parallel to the width (b), is

db³/12
bd³/36
db³/36
bd³/12

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