Mechanical Engineering :: Theory of Machine
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Whitworth quick return motion mechanism is an inversion of a double slider crank chain.
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The maximum gyroscopic couple acting on the ship tends to shear the holding down bolts.
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In a multiple V-belt drive, when a single belt is damaged, it is preferable to change the complete set to
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A force acting in the opposite direction to the motion of the body is called force of friction.
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A shaft has two heavy rotors mounted on it. The transverse natural frequencies, considering each of the rotor separately, are 100 Hz and 200 Hz respectively. The lowest critical speed is
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The acceleration of piston in a reciprocating steam engine is given by (where ω = Angular velocity of crank, r = Radius of crank pin circle, θ = Angle turned by crank from inner dead centre, and n = Ratio of length of connecting rod to the radius of crank)
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Torsional vibrations are said to occur when the particles of a body moves
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A body is said to vibrate with simple harmonic motion if its acceleration is proportional to the distance from the mean position.
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For the isochronous Porter governor, the controlling force curve is a straight line passing through the origin.
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The virtual or equivalent eccentric for the Meyer's expansion valve is defined as an eccentric having such a length and angle of advance that will cause cut-off to take place at the same position, as is caused by the combined effect of main eccentric and expansion eccentric.
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