A speed reducer unit consists of a double-threaded worm of pitch = 11 – McqOptions

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1.	A speed reducer unit consists of a double-threaded worm of pitch = 11 mm and a worm wheel of pitch diameter = 84 mm. The ratio of the output torque to the input to rque is
A.	7¬¨¬®‚Äö√†√´6
B.	12
C.	24
D.	42
Answer» B. 12

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