a) A solid alloy shaft 5cm diameter is to be coupled in series with a hollow steel shaft of the same external diameter. Find the internal diameter of the steel shaft if the angle of twist per unit length is to be 75% of that of the alloy shaft. Determine the speed at which the shafts are to be driven to transmit 200kW, if the limits of shearing stress are to be 55N/mm2 and 75N/mm² in alloy and steel respectively. Gsteel = 2.2Galloy

a) A solid alloy shaft 5cm diameter is to be coupled in series with a hollow steel shaft of the same external diameter. Find the internal diameter of the steel shaft if the angle of twist per unit length is to be 75% of that of the alloy shaft. Determine the speed at which the shafts are to be driven to transmit 200kW, if the limits of shearing stress are to be 55N/mm2 and 75N/mm² in alloy and steel respectively. Gsteel = 2.2Galloy

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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a) A solid alloy shaft 5cm diameter is to be coupled in series with a hollow steel shaft ofthe same external diameter. Find the internal diameter of the steel shaft if the angle oftwist per unit length is to be 75% of that of the alloy shaft. Determine the speed at whichthe shafts are to be driven to transmit 200kW, if the limits of shearing stress are to be55N/mm2 and 75N/mm2 in alloy and steel respectively. Gsteel = 2.2Galloy
A 2-in diameter steel shaft rotates at 240 rpm. If the shearing stress is limited to 12 ksi, determine the maximum horsepower that can be transmitted.
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Q2: A solid steel shaft A of 60 mm diameter rotates at 300 rev/min. Find the greatest power that can be transmitted for a limiting shearing stress of 60 MN/m2 in the steel. It is proposed to replace A by a hollow shaft B, of the Same external diameter but with a limiting shearing stress of 75 MN/m2 . Determine the internal diameter of B to transmit the same power at the same speed.
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