EXAMIANS
The frictional torque transmitted in a flat collar bearing, considering uniform wear, is (where r₁ and r₂ = External and internal radii of collar respectively)
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In which of the following type of gear train the first gear and the last gear are co-axial.
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The critical speed of a shaft with a disc supported in between is equal to the natural frequency of the system in
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The moment on the pulley which produces rotation is called
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In a system subjected to damped forced vibrations, the ratio of maximum displacement to the static deflection is known as
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When the radius of rotation of balls __________ as the equilibrium speed increases, the governor is said to be unstable.
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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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The natural frequency of free longitudinal vibrations is equal to (where m = Mass of the body, s = Stiffness of the body, and δ = Static deflection of the body)
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The velocity of sliding of meshing gear teeth is (Where ω₁ and ω₂ are angular velocities of meshing gears and ‘y’ is distance between point of contact and the pitch point)
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In full depth involute system, the smallest number of teeth in a pinion which meshes with rack without interference is
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