Why are the helical gears used commonly in transmission over spur gears?
VªkUlfe'ku vkoj Lij fx;j esa lekU;r;k gsfydy fx;j dk mi;ksx D;ksa fd;k tkrk gSA
Low cost and high strength
Low noise level and high strength
Low noise level and economy
Low noise level and low cost
Low noise level and high strength
Explanation:
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