Mechanical Engineering :: Theory of Machine
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The pair is known as a higher pair, when the relative motion between the elements of a pair is
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When the connection between the two elements is such that only required kind of relative motion occurs, it is known as self-closed pair.
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The Whitworth quick return motion mechanism is formed in a slider crank chain when the
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The primary unbalanced force is maximum when the angle of inclination of the crank with the line of stroke is
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The acceleration of the particle moving with simple harmonic motion is inversely proportional to the displacement of the particle from the mean position.
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In vibration isolation system, the transmissibility will be equal to unity, for all values of damping factor, if ω/ωn is
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The two links OA and OB are connected by a pin joint at O. If the link OA turns with angular velocity ω1 rad/s in the clockwise direction and the link OB turns with angular velocity ω2 rad/s in the clockwise direction, then the rubbing velocity at the pin joint O is (where r = Radius of the pin at O)
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If ω/ωn = 2, where co is the frequency of excitation and ωn is the natural frequency of vibrations, then the transmissibility of vibration will the
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A disturbing mass m1 attached to the rotating shaft may be balanced by a single mass m2 attached in the same plane of rotation as that of m1, such that (where r1 and r2 are the radii of rotation of m1 and m2 respectively)
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In railway axle boxes, the bearing used is
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