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Engineering Mechanics

Engineering Mechanics
The centre of gravity a T-section 100 mm × 150 mm × 50 mm from its bottom is

50 mm
75 mm
87.5 mm
125 mm

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Engineering Mechanics
The velocity of a particle (v) moving with simple harmonic motion, at any instant is given by (where, r = Amplitude of motion, and y = Displacement of the particle from mean position.)

ω.√(r² - y²)
ω.√(y² - r²)
ω².√(r² - y²)
ω².√(y² - r²)

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

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

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Engineering Mechanics
The slope on the road surface generally provided on the curves is known as

Angle of friction
Angle of banking
None of these
Angle of repose

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Engineering Mechanics
The maximum efficiency of a lifting machine is

m/V.R.
1/m
V.R./m
1/(m × V.R.)

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Engineering Mechanics
Moment of inertia of a rectangular section having width (b) and depth (d) about an axis passing through its C.G. and parallel to the width (b), is

db³/36
db³/12
bd³/12
bd³/36

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