Difference Simple gear, Compound gear and Elliptical gear train

Difference Simple gear, Compound gear and Elliptical gear train Points : difference simple gear, compound gear and elliptical gear train, comparison between simple gear, compound gear and elliptical gear train, simple gear vs compound gear vs elliptical gear train

Difference Simple gear, Compound gear and Elliptical gear train
	Simple gear	Compound gear	Elliptical gear train
1.	In simple gear only one gear in every shaft and there is a relative motion among shaft axis.	In compound gear there is extra than one gear on shaft which is firmly fix and mash through the gear on another shaft forming gear train.	In elliptical gear train axis of shaft on which the gear are mount can move relative to the fixed axis.
2.	In a simple gear train, a few of the gears are connected to the similar shaft.	In a compound gear train, every gear has its own shaft for rotation.	Elliptical gears rotating about their geometric centers are identical.
3.	In simple gear trains, the final gear ratio is resolute through the driver and driven gears.	Compound gear trains enhance power transfer more than simple gear trains.	Elliptical gear trains are power transfer both gears.
4.	For large rate reduction, large size of gear is necessary.	For large speed reduction the small gear ratio is necessary.	For large speed reduction in elevated velocity moderate dimension gear is necessary.