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Engineering Mechanics

Engineering Mechanics
The maximum acceleration of a particle moving with simple harmonic motion is

ω
ω²r
ω/r
ωr

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Engineering Mechanics
The three forces of 100 N, 200 N and 300 N have their lines of action parallel to each other but act in the opposite directions. These forces are known as

Coplanar concurrent forces
Like parallel forces
Unlike parallel forces
Coplanar non-concurrent forces

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Engineering Mechanics
The velocity ratio for the third system of pulleys is

n²
2n - 1
2n
n

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Engineering Mechanics
In a single threaded worm and worm wheel, the number of teeth on the worm is 50. The diameter of the effort wheel is 100 mm and that of load drum is 50 mm. The velocity ratio is

100
200
50
400

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Engineering Mechanics
If a body is acted upon by a number of coplanar non-concurrent forces, it may

Be completely at rest
All of these
Rotate about itself without moving
Move in any one direction rotating about itself

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Engineering Mechanics
The efficiency of a lifting machine is the ratio of

Work done by the machine to the work done on the machine
Output to the input
All of these
Mechanical advantage to the velocity ratio

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MORE MCQ ON Engineering Mechanics

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