The solid steel shaft DF has a diameter of 25 mm andis supported by smooth bearings at D and E. It iscoupled to a motor at F, which delivers 12 kW of powerto the shaft while it is turning at 60 rev/s. The gears A,B, and C remove 3 kW, 4 kW, and 5 kW respectively.The shaft is free to turn in its support bearings D andE. (Figure 1)FigureD3 kW 4 kWAB5 kW25 mmCEF1 of 112 kWPart ADetermine the absolute maximum shear stress developed in the shaft.Express your answer to three significant figures and include the appropriate units.Tabs maxSubmit=16.75Provide FeedbackμĂ|MPaPrevious Answers Request AnswerX Incorrect; Try Again; 4 attempts remaining?

The diameter of the shaft DF is The power at F is The power at A is The power at B is The power at C…

The solid steel shaft DF has a diameter of 25 mm and is supported by smooth bearings at D and E. It is coupled to a motor at F, which delivers 12 kW of power to the shaft while it is turning at 60 rev/s. The gears A, B, and C remove 3 kW, 4 kW, and 5 kW respectively. The shaft is free to turn in its support bearings D and E. (Figure 1) Figure 3 kW 4 kW A B 5 kW 25 mm 1 of 1 12 kW Determine the absolute maximum shear stress developed in the shaft. Express your answer to three significant figures and include the appropriate units. Tabs max = Submit 16.75 Provide Feedback μA MPa Previous Answers Request Answer X Incorrect; Try Again; 4 attempts remaining ?

The solid steel shaft DF has a diameter of 25 mm and is supported by smooth bearings at D and E. It is coupled to a motor at F, which delivers 12 kW of power to the shaft while it is turning at 60 rev/s. The gears A, B, and C remove 3 kW, 4 kW, and 5 kW respectively. The shaft is free to turn in its support bearings D and E. (Figure 1) Figure 3 kW 4 kW A B 5 kW 25 mm 1 of 1 12 kW Determine the absolute maximum shear stress developed in the shaft. Express your answer to three significant figures and include the appropriate units. Tabs max = Submit 16.75 Provide Feedback μA MPa Previous Answers Request Answer X Incorrect; Try Again; 4 attempts remaining ?

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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Concept explainers

Design of Shafts and Shaft Components

The shaft is basically defined as the machine element that rotates, is in circular cross-section, it is majorly used to transfer the power from one part of the system to another, or from a power generating machine to a power absorbing machine. The shaft is supported on bearings and is rotated with the help of a set of gears or pulleys that are used for the power transmission. Bending moment, torsion, and an axial force act upon the shaft. Designing of shaft primarily involves determining stresses at a critical point in the shaft that is arising due to loading.

Question

The solid steel shaft DF has a diameter of 25 mm and
is supported by smooth bearings at D and E. It is
coupled to a motor at F, which delivers 12 kW of power
to the shaft while it is turning at 60 rev/s. The gears A,
B, and C remove 3 kW, 4 kW, and 5 kW respectively.
The shaft is free to turn in its support bearings D and
E. (Figure 1)
Figure
D
3 kW 4 kW
A
B
5 kW
25 mm
CEF
1 of 1
12 kW
Part A
Determine the absolute maximum shear stress developed in the shaft.
Express your answer to three significant figures and include the appropriate units.
Tabs max
Submit
=
16.75
Provide Feedback
μĂ
|MPa
Previous Answers Request Answer
X Incorrect; Try Again; 4 attempts remaining
?

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Problem 3
draw fbd
Figure 1 is presented the solid shaft AB rotates at 650 rpm and transmits 30 kW from the motor machine tools connected to gears F and G. Assuming that, 10 kW is taken off at gear F and 20 k taken off at gear G, knowing that allowable torsional shear stress is equal to (65 plus last digit of student ID) MPa. Design the smallest permissible diameter of shaft AB. Figure 1 150 mm 225 mm 905 mm 150 mm 60 mm 100 mm D. 60 mm B.
Problem 2: Consider the two gears mounted on the shaft, as shown. Distances are L1 = 100 mm, L2 = 250 mm, and L3 = 175 mm. Diameter of shaft AB is 15 mm, diameter of shaft BC is 20 mm, and diameter of shaft CD is 17.5 mm. Young's modulus for each portion is 200 GPa. Determine the displacement of point D with reference to point A. Also, determine the displacement of point A relative to C. b. Determine the axial strain at any point in shaft segments AB, BC and CD, respectively. If Poisson's ratio for the material of the shafts is v = 0.2, determine the lateral strain in each of the shaft segments. Based on your answers to part (a), do the gears move towards each other, or do they separate from each other? Note that in real gearboxes, movement of gears towards or away from each other is prevented by using thrust bearings. 10 kN 4 kN 5 kN 7 kN 4 kN NY 0I 17.
Please answer in proper units