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Applied Mechanics and Graphic Statics

Applied Mechanics and Graphic Statics
Maximum efficiency of a screw jack for the angle of friction θ, is

(1 - sin θ)/sin θ
(1 + sin θ)/(1 - sin θ)
sin θ/(1 + sin θ)
(1 - sin θ)/(1 + sin θ)

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Applied Mechanics and Graphic Statics
The maximum frictional force which comes into play, when a body just begins to slide over the surface of a another body, is known

Rolling friction
Sliding friction
Limiting friction
None of these

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Applied Mechanics and Graphic Statics
The angles between two forces to make their resultant a minimum and a maximum respectively are

180° and 90°
180° and 0°
90° and 180°
0° and 90°

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Applied Mechanics and Graphic Statics
Energy may be defined as

Rate of doing work
All listed here
Power of doing work
Capacity of doing work

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Applied Mechanics and Graphic Statics
The torque produced by a force depends oni. the magnitude of the forceii. the direction of the forceiii. the point of application of the force relative to originThe correct answer is

only (i)
both (i) and (iii)
all (i), (ii) and (iii)
both (i) and (ii)

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Applied Mechanics and Graphic Statics
A rigid body suspended vertically at a point and oscillating with a small amplitude under the action of the force of gravity, is called

Simple pendulum
Compound pendulum
Second's pendulum
None of these

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