Which
of the following toothed wheels does not come under the classification
according to the type of gearing?
External
gearing
Internal gearing
Rack and pinion
Parallel gearing
Rack and pinion
Classification
of gear according to type of gearing:
1.
External gear
2.
Internal gear.
Classification
according to axes of shaft connected :
1.
Parallel gearing
2.
Intersecting shaft gearing
3.
Skew shaft gearing
Hence,
the correct option is (C).
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