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Engineering Mechanics

Engineering Mechanics
A differential pulley block has larger and smaller diameters of 100 mm and 80 mm respectively. Its velocity ratio is

10
5
20
40

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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 maximum frictional force which comes into play when a body just begins to slide over another surface is called

Kinematic friction
Rolling friction
Sliding friction
Limiting friction

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Engineering Mechanics
If the number of pulleys in a system is equal to its velocity ratio, then it is a __________ system of pulleys.

Third
Second
First
None of these

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Engineering Mechanics
The ideal angle of banking provided on the curves on roads depends upon

Nature of the road surface
Coefficient of friction between the road and vehicle contact point
(Velocity)2 of the vehicle
Weight of the vehicle

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Engineering Mechanics
Mass moment of inertia of a thin rod about its one end is ___________ the mass moment of inertia of the same rod about its mid-point

Same as
Twice
Thrice
Four times

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