A generator shaft in a small hydroelectric plant turns at 120 rpm and delivers 38 kW (see figure). a) If the diameter of the shaft is d = 75 mm, what is the maximum shear stress τmax in the shaft? b) If the shear stress is limited to 28 MPa, what is the minimum permissible diameter dmin of the shaft?

A generator shaft in a small hydroelectric plant turns at 120 rpm and delivers 38 kW (see figure). a) If the diameter of the shaft is d = 75 mm, what is the maximum shear stress τmax in the shaft? b) If the shear stress is limited to 28 MPa, what is the minimum permissible diameter dmin of the shaft?

Mechanics of Materials (MindTap Course List)

9th Edition

ISBN:9781337093347

Author:Barry J. Goodno, James M. Gere

Publisher:Barry J. Goodno, James M. Gere

Chapter3: Torsion

Section: Chapter Questions

Problem 3.7.8P: A tubular shaft being designed for use on a construction site must transmit 120 kW at 1,75 Hz, The...

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