Figure shows some details of a compound epicyclic gear drive where I is the driving or input shaft and O is the driven or output shaft which carries two arms A and B rigidly fixed to it. The arms carry planet wheels which mesh with annular wheels P and Q and the sunwheels X and Y. The sun wheel X is a part of Q. Wheels Y and Z are fixed to the shaft I. Z engages with a planet wheel carried on Q and this planet wheel engages the fixed annular wheel R. The numbers of teeth on the wheels are : P = 114, Q = 120, R = 120, X = 36, Y = 24 and Z = 30. The driving shaft I makes 1500 r.p.m. clockwise looking from our right and the input at I is 7.5 kW. a. Find the speed and direction of rotation of the driven shaft O and the wheel P. b. Find the torque tending to rotate the fixed wheel R

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Q: Find the ratio of the speed of the driving shaft to the speed of the driven shaft.

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Q: Find the ratio of the speed of the driving shaft to the speed of the driven shaft.

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A: For the solution refer below images.

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Power Transmission Elements

It is defined as the energy transfer from one location to another location. The energy will start moving from the energy generation source to the energy applied position to obtain the work output. From this method, a large amount of electric energy moves from the power station to various electrical substations.