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Engineering Mechanics

Engineering Mechanics
The amplitude is always __________ radius of the circle.

None of these
Greater than
Less than
Equal to

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Engineering Mechanics
A screw jack used for lifting the loads is

None of these
A reversible machine
A non-reversible machine
An ideal machine

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Engineering Mechanics
The point, through which the whole weight of the body acts, irrespective of its position, is known as

Center of percussion
Center of gravity
Moment of inertia
Center of mass

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Engineering Mechanics
A weight of 1000 N can be lifted by an effort of 80 N. If the velocity ratio is 20, the machine is

Reversible
Ideal
Non-reversible
None of these

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Engineering Mechanics
From a circular plate of diameter 6 cm is cut out a circle whose diameter is a radius of the plate. Find the e.g. of the remainder from the centre of circular plate

1.5 cm
2.5 cm
1.0 cm
0.5 cm

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Engineering Mechanics
The velocity ratio of a differential wheel and axle with 'D' as the diameter of effort wheel and d1 and d2 as the diameters of larger and smaller axles respectively, is

2D/(d₁ - d₂)
2D/(d₁ + d₂)
D/(d₁ + d₂)
D/(d₁ - d₂)

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