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Engineering Mechanics

Engineering Mechanics
A smooth cylinder lying on its convex surface remains in __________ equilibrium.

Stable
None of these
Unstable
Neutral

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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

bd³/36
db³/36
bd³/12
db³/12

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Engineering Mechanics
The angular velocity (in rad/s) of a body rotating at N revolutions per minute is

πN/180
2πN/60
πN/60
2πN/180

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

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

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Engineering Mechanics
Moment of inertia of a triangular section of base (b) and height (h) about an axis through its base, is

bh3/36
bh3/4
bh3/12
bh3/8

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Engineering Mechanics
If rain is falling in the opposite direction of the movement of a pedestrian, he has to hold his umbrella

Less inclined when moving
More inclined when standing
More inclined when moving
Less inclined when standing

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