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Engineering Mechanics

Engineering Mechanics
A framed structure is imperfect, if the numbers of members are __________ (2j - 3).

Less than
Greater than
Equal to
Either (B) or (C)

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Engineering Mechanics
Which of the following is an equation of linear motion?(where, u and v = Initial and final velocity of the body, a = Acceleration of the body, and s = Displacement of the body in time t seconds.)

v2 = u2 + 2a.s
s = u.t + ½ a.t2
v = u + a.t
All of these

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Engineering Mechanics
The linear velocity of a body rotating at ω rad/s along a circular path of radius r is given by

ω.r
ω/r
ω².r
ω²/r

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Engineering Mechanics
According to parallel axis theorem, the moment of inertia of a section about an axis parallel to the axis through center of gravity (i.e. IP) is given by(where, A = Area of the section, IG = Moment of inertia of the section about an axis passing through its C.G., and h = Distance between C.G. and the parallel axis.)

IP = IG + Ah2
IP = IG - Ah2
IP = IG / Ah2
IP = Ah2 / IG

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Engineering Mechanics
A ladder is resting on a rough ground and leaning against a smooth vertical wall. The force of friction will act

Upward at its upper end
Zero at its upper end
Perpendicular to the wall at its upper end
Downward at its upper end

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Engineering Mechanics
The equivalent length of a simple pendulum which gives the same frequency as compound pendulum is

h²/(kG² + h²)
(kG² + h²)/h²
h/(kG² + h²)
(kG² + h²)/h

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