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Engineering Mechanics

Engineering Mechanics
A framed structure is perfect, if the number of members are __________ (2j - 3), where j is the number of joints.

None of these
Equal to
Greater than
Less than

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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 depth (d), is

bd³/12
db³/36
bd³/36
db³/12

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Engineering Mechanics
The bodies which rebound after impact are called

None of these
Elastic bodies
Inelastic bodies
Neither elastic nor inelastic bodies

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Engineering Mechanics
The center of gravity of a semi-circle lies at a distance of __________ from its base measured along the vertical radius.

3r/ 8
8r/3
3r/4π
4r/ 3π

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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

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

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Engineering Mechanics
The velocity ratio of a differential wheel and axle with 'D' as the diameter of effort wheel and d1 and d2 as the diameters of larger and smaller axles respectively, is

2D/(d₁ + d₂)
D/(d₁ - d₂)
2D/(d₁ - d₂)
D/(d₁ + d₂)

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