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Applied Mechanics and Graphic Statics

Applied Mechanics and Graphic Statics
The unit of moments in M.K.S system, is

kg/m2
kg/sec2
kg.m
kg/sec

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Applied Mechanics and Graphic Statics
The resultant of two forces P and Q is R. If Q is doubled, the new resultant is perpendicular to P. Then,

P = Q
Q = R
None of these
P = R

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Applied Mechanics and Graphic Statics
The moment of inertia of a circular lamina of diameter ‘d’, about an axis perpendicular to the plane of the lamina and passing through its centre, is

π/64 (D⁴ + d⁴)
πd⁴/16
πd⁴/32
πd⁴/24

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Applied Mechanics and Graphic Statics
The condilion for a lifting machine to be reversible is that its efficiency should be

less than 50%
equal to 100%
more than 50%
more than 66.67%

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Applied Mechanics and Graphic Statics
The locus of the instantaneous centre of a moving rigid body, is

Straight line
Centroid
Involute
Spiral

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Applied Mechanics and Graphic Statics
A ladder of weight 'w' rests against a smooth vertical wall, and rests on rough horizontal ground, the coefficient of friction between the ladder and the ground being 1/4. The maximum angle of inclination of the ladder to the vertical, if a man of weight 'w' is to walk to the top of it safely, is tan'1 x, where x is

43834
3
4
43833

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