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Engineering Mechanics

Engineering Mechanics
The periodic time (T) is given by (where, ω = Angular velocity of particle in rad/s.)

ω/2π
2π/ω
π/ω
2π × ω

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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

6t² - 8t
6f - 4
6f - 8
3t² + 2t

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

43832
43892
43865
43864

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Engineering Mechanics
The maximum efficiency of a screw jack is

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

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Engineering Mechanics
The coefficient of friction depends upon

Area of contact
All of these
Nature of surfaces
Shape of the surfaces

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Engineering Mechanics
The friction experienced by a body, when in motion, is known as

Dynamic friction
Limiting friction
Rolling friction
Static friction

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MORE MCQ ON Engineering Mechanics

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