Meisterprüfung Mechatronik Practice Questions - Meisterprüfung Mechatronik (Austria) Exam

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A two-stage spur gearbox (zweistufiges Stirnradgetriebe) is driven by an electric motor rotating at n_in = 1,440 rpm. The first gear stage has tooth counts z1 = 20 and z2 = 60; the second stage has tooth counts z3 = 15 and z4 = 75. What is the total gear ratio i_tot and the resulting output shaft speed n_out?

i_tot = 15.0 : 1 and n_out = 96 rpm i_tot = 8.0 : 1 and n_out = 180 rpm i_tot = 9.0 : 1 and n_out = 160 rpm i_tot = 20.0 : 1 and n_out = 72 rpm

Correct Answer:

i_tot = 15.0 : 1 and n_out = 96 rpm

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