In considering friction of a V-thread, the virtual coefficient of friction (μ1) is given by
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Mechanical Engineering · all questionsTheory Of Machine
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The lower pairs are _________ pairs.
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In a coupling rod of a locomotive, each of the four pairs is a ________ pair.
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A kinematic chain is known as a mechanism when
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A pantograph is a mechanism with
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A ball and a socket forms a
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In a gear having involute teeth, the normal to the involute is a tangent to the
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A mechanism is an assemblage of
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Which of the following statement is correct as regard to the difference between a machine and a structure?
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In a four-bar chain it is required to give an oscillatory motion to the follower for a continuous rotation of the crank. For the lengths of 50 mm of crank and 70 mm of the follower, determine theoretical maximum length of coupler. The distance between fixed pivots of crank and followers is
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Which type of gear train is used in clock mechanism to join hour hand and minute hand?
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A rotor which is balanced statically but not dynamically is supported on two bearings L apart and at high speed of the rotor, reaction on the left bearing is R. The right side of the bearing is shifted to a new position 2L apart from the left bearing. At the same rotor speed, dynamic reaction on the left bearing in the new arrangement will
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The relation apply only to kinematic chains in which lower pairs are used. This may be used to kinematic chains in which higher pairs are used, but each higher pair may be taken as equivalent to
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A circle passing through the pitch point with its center at the center of cam axis is known as
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Cylindrical cams can be classified as
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The equation of motion for a vibrating system with viscous damping is if the roots of the equation are __________ then the system will be under damped.
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The equation of motion for a vibrating system with viscous damping is if the roots of the equation are __________ then the system will be under damped.
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The frictional torque transmitted in a flat pivot bearing, considering uniform wear, is (where μ = Coefficient of friction, W = Load over the bearing and R = Radius of bearing surface)
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When a rigid body is suspended vertically and it oscillates with a small amplitude under the action of the force of gravity, the body is known as
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The type of coupling used to join two shafts whose axes are neither in same straight line nor parallel, but intersect is
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