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Engineering Mechanics

Engineering Mechanics
If n = number of members and y = number of joints, then for a perfect frame, n = ?

43832
43864
43892
43865

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Engineering Mechanics
The maximum efficiency of a screw jack is

(1 + tanφ)/(1 - tanφ)
(1 + sinφ)/(1 - sinφ)
(1 - sinφ)/(1 + sinφ)
(1 - tanφ)/(1 + tanφ)

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Engineering Mechanics
If the body falls freely under gravity, then the gravitational acceleration is taken as

+9.8 m/s2
-9.8 m/s2
+8.9 m/s2
-8.9 m/s2

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Engineering Mechanics
A particle moves along a straight line such that distance (x) traversed in 't' seconds is given by x = t² (t - 4), the acceleration of the particle will be given by the equation

6f - 8
3t² + 2t
6f - 4
6t² - 8t

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Engineering Mechanics
The acceleration of a particle moving with simple harmonic motion is __________ at the mean position.

None of these
Maximum
Minimum
Zero

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

Neutral
Stable
None of these
Unstable

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