The
size of the gear is usually specified by
Pitch circle diameter
Pressure
pitch
Circular
pitch
Diameter
pitch
Pitch circle diameter
●The
size of gear is usually specified by pitch circle diameter and it is diameter
of pitch cylinder.
●
Pitch cylinders of a pair of gear in mesh are the imaginary friction cylinders,
which by pure rolling together, transmit the same motion as the pair of gears
Hence,
the correct option is (A).
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