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The number of starts on the worm for a velocity ratio of 40 should be

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+1 vote
in Machine Kinematics by (38.0k points)
The number of starts on the worm for a velocity ratio of 40 should be

(a) single

(b) double

(c) triple

(d) quadruple

I got this question in a national level competition.

Origin of the question is Worm Gears topic in chapter Toothed Gearing & Gear Trains of Machine Kinematics

1 Answer

0 votes
by (106k points)
The correct option is (a) single

The explanation: For number of starts from 36 and above we have single velocity ratio. For 12 to 36 we have double velocity ratio, for 8 to 12, we have triple velocity ratio and for 6 to 12 we have quadruple velocity ratio.

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