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Engineering Mechanics

Engineering Mechanics
The velocity ratio of a first system of pulleys with 4 pulleys is

8
4
16
20

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Engineering Mechanics
A couple produces

Rotational motion
Combined translatory and rotational motion
None of these
Translatory motion

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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

50
200
100
400

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Engineering Mechanics
The ratio of static friction to dynamic friction is always

None of these
Greater than one
Equal to one
Less than one

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Engineering Mechanics
If ‘P’ is the force acting on the body, ‘m’ is the mass of the body and ‘a’ is the acceleration of the body, then according to Newton's second law of motion,

P/m.a = 0
P + m.a = 0
P × m.a = 0
P - m.a = 0

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Engineering Mechanics
The range of a projectile is maximum, when the angle of projection is

90°
30°
45°
60°

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MORE MCQ ON Engineering Mechanics

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