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Engineering Mechanics

Engineering Mechanics
Moment of inertia of a circular section about its diameter (d) is

πd4/32
πd3/16
πd3/32
πd4/64

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

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Engineering Mechanics
The total energy possessed by a system of moving bodies

Is maximum in the start and minimum at the end
Is minimum in the start and maximum at the end
Varies from point to point
Is constant at every instant

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Engineering Mechanics
The unit of force in S.I. system of units is

Dyne
Newton
Kilogram
Watt

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Engineering Mechanics
A framed structure is perfect, if the number of members are __________ (2j - 3), where j is the number of joints.

Less than
Equal to
None of these
Greater than

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Engineering Mechanics
The angle between two forces when the resultant is maximum and minimum respectively are

90° and 180°
180° and 0°
90° and 0°
0° and 180°

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