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Applied Mechanics and Graphic Statics

Applied Mechanics and Graphic Statics
A load of 500 kg was lifted through a distance of 13 cm. by an effort of 25 kg which moved through a distance of 650 cm. The efficiency of the lifting machine is

0.3
0.55
0.5
0.4

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Applied Mechanics and Graphic Statics
A uniform pyramid and a uniform prism of same height lie with their base on the surface. Which is more stable ?

pyramid
prism
both equally stable
None of these

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Applied Mechanics and Graphic Statics
Total no of instantaneous centers of a machine having ‘n’ links, is

n
(n - 1)
n (n - 1)/2
n/2

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Applied Mechanics and Graphic Statics
If the velocity of projection is 4 m/sec and the angle of projection is α°, the maximum height of the projectile from a horizontal plane, is

u² tan² α/2g
u² sin 2α/2g
u² sin² α/2g
u² cos² α/2g

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Applied Mechanics and Graphic Statics
A symmetrical body is rotating about its axis of symmetry, its moment of inertia about the axis of rotation being 2 kg -m2 and its rate of rotation 2 revolutions/see. The angular momentum of the body in kg-m2/sec is

6 7i
4
8
8TC

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Applied Mechanics and Graphic Statics
A particle is executing simple harmonic motion in a line 1.0 m long. If the time of one complete vibration is 1 sec, then the maximum velocity of the particle is

3.14 m/sec
6.28 m/sec
1.00 m/sec
1.57 m/sec

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