Gear teeth
are made harder to avoid
गियर के दांतों निम्न से बचने के लिए कठिन बना दिया गया है
Greater compressive stress in bending
Tensile strength
Abrasion
Wear
Wear
Since the
gears are used to transmit power in mechanical parts so, there will be
considerable amount of load on gears while in contact with other and this load
act at the tooth of the gears. Thus it is necessary that the tooth is hard
enough to avoid wear and tear.
Hence, the
correct option is (D).
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