The spring controlled governor of the Wilson Hartnell type is shown in Fig. In this governor, the bell crank levers are pivoted at the ends of two arms which rotate with the spindle. The vertical arms of the bell crank lever...
Category - Mechanical
Governor Arrangement This is the most common type of governor. In the centrifugal type governors, rotation of the crank shaft is taken to a vertical spindle through suitable gears. It consists of two balls of equal mass, which...
Function of Governor The function of a governor is to automatically maintain the speed of an engine within specified limits whenever there is a variation of load. If the load on the engine increases, its speed decreases. So it...
So far, we have discussed the free vibrations of systems where a system once disturbed from its equilibrium position executes vibration indefinitely because of its elastic properties. In actual practice, this system will come to...
Consider a uniform shaft of negligible mass rigidly fixed at its upper end and carrying a disc at its lower end, as shown in Fig. If the disc is given a twist about its vertical axis and then released, it will start twisting and...
Critical or whirling or whipping speed is the speed at which the shaft tends to vibrate violently in the transverse direction. In other words, the speed at which resonance occurs are known as the critical speed. At critical...
Types of vibration may be classified according to : the actuating force on the body, and the stresses in the supporting medium, as shown in image. According to the Actuating Force Free or Natural Vibrations If the periodic...
Since most of the vibrating system follow harmonic motion (SHM), therefore it is essential to have proper understanding of SHM related basic concepts. A body is said to have simple harmonic motion (SHM), if it moves or vibrates...
Any motion which repeats itself after an interval of time is called vibration or oscillation or periodic motion. All bodies possessing mass and elasticity are capable of producing vibrations. Vibration problems, in practice...
Balancing machines are used to: Determine whether the rotating parts of a machine is completely balanced or not, Check the static dynamic balancing of rotating parts, Determine the next extent to which balancing is done (in case...
