3.33 The figure shows an inboard engine, 8-ft long steel drive shaft, and propellerfor a motor boat. The shaft is to be designed to safely transmit 200 hp at 3500 rev/min. Determine the diameter of the smallest shaft that can be used and its corre-sponding angle of twist. For the steel, use a working shear stress of 12000 psi andG= 12 x 10° psi.

Permissible stress is stress which produces due to pressure or forces which does not exceed the…

Answered: 3.33 The figure shows an inboard…

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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Figure Q1 shows a solid steel shaft AF which is supported by frictionless bearings at B and F. It is coupled to an electric motor at A. The modulus of rigidity of steel shaft is 75 GPa. The shaft is loaded by the torque as stated in the figure below. Answer the following:(a) Calculate the maximum shear stress in the shaft. (b) Determine the total angle of twist between F and A. (c) If speed of the shaft is 50 rev/s, calculate the required power transmitted by the electric motor to the shaft.
A solid 1.6 in. diameter shaft is used to synchronize multiple mechanisms in a manufacturing plant. The torque delivered by the shaft is 3200 lb-in. What horsepower must be delivered to the shaft to maintain a shaft speed of 610 rpm? What is the maximum shear stress developed in the shaft? Answer: P = i T = i hp psi
The composite shaft shown in the figure consists of two steel pipes that are connected at flange B and securely attached to rigid walls at A and C. Steel pipe (1) has an outside diameter of 168 mm and a wall thickness of 5 mm. Steel pipe (2) has an outside diameter of 126 mm and a wall thickness of 8 mm. Both pipes are 2.4 m long and have a shear modulus of 79 GPa. If a concentrated torque of 22 kN-m is applied to flange B, determine (a) the maximum shear stress magnitudes in pipes (1) and (2). (b) the rotation angle of flange B relative to support A. N Swors: LI (1) TB. B L2 (2) C X
The figure shows a shaft carrying three gears that rotates at 1150 rpm. Gear A delivers power =10kw to a mating gear that drives a mixer. Gear C delivers power =15kw to a different mating gear that drives a circular saw. All power comes into the shaft through gear B. Draw sheardiagramand bending moment diagram. Considering only torsion, compute the body free diagram and shearing stress in each part of the shaft. Consider stress concentrations, assume the Material is 1144 OQT 1300.
The figure shows a shaft carrying three gears that rotates at 1150 rpm. Gear A delivers power to a mating gear that drives a mixer. Gear C delivers power to a different mating gear that drives a circular saw. All power comes into the shaft through gear B. Draw sheardiagramand bending moment diagram . Considering only torsion, compute the shearing stress in each part of the shaft. Consider stress concentrations, assume the Material is 1144 OQT 1300,And GearA=10kw, Gear C=15kw.
A drive shaft running at 2500 rpm has outer diameter of 60mm and innerdiameter of 40mm. The allowable shear stress in the shaft is 35MPa. Determine themaximum power that can be applied. Present drawings/FBD’s illustrating your solution.
The two solid shafts are connected by the gears shown. The motor constantly supplies 20 kW of power at 15 Hz to system at A. The yield shear stress is 140 MPa for shaft (1) and 220 MPa for the shaft (2), and over all factor of safety is 2. a) Find the diameter of both shafts. b) If the modulus of rigidity of shaft (2) G is 77.2 GPa, calculate the relative angle of twist D with respect to C. 30 teeth B (1) 48 teeth Tp 0.8 m
The shear modulus of the solid steel shaft is G = 11 x 10° ksi. Motor A is directly coupled to the shaft and delivers 3 hp while rotating at 1800 rpm (revolutions per minute). Gears B, C, and D remove the powers indicated in the figure. Given the following two criteria, determine the required diameter of the shaft to the nearest 1/s in. (1) The maximum shear stress must not exceed Tallow = 9 ksi. (2) In order to prevent binding or interference in the attached machin- ery, the angle of twist of gear B with respect to gear D must not exceed 1°. 1.25 ft 1.0 ft 3 hp 1.5 ft 1 hp 0.5 hp 1.5 hp
The splined ends and gears attached to the steel shaft are subjected to the torques shown in Figure 4. Take G = 75 GN/m². (i) (ii) Determine the location along the 40 mm diameter shaft where the shear stress is largest and plot the variation in shear stress from the shaft centre to its outer surface. Determine the angle of twist of sections C, D, and B relative to end A by producing a graphical plot of the variation of angle of twist from end A to end B (wind-up diagram). 300 N-m 500 N-m A www. 300 mm 200 N.m MAAN 400 mm Figure 4 500 mm 400 N-m
For the circular shaft (G=12×106 psi) shown below: a. Compute the reaction torque and draw the torque (T) diagram. b. Find the max shear stress (Tmax) along the shaft. c. Compute the angle of twist AE at E. 1000 lb in 500 lb in 800 lb. in A B 2 in 2 in + 3 in D 5 in to E AC CD 2 DE
The motor shown supplies 126 hp at 1340 rpm at A. Shafts (1) and (2) are each solid 1.86-in.-diameter steel [G=11400 ksi] shafts with lengths of L₁ = 79 in. and L₂ = 105 in., respectively. Assume Ng-27 teeth and N-42 teeth. The bearings shown permit free rotation of the shafts. (a) Determine the maximum shear stresses T₁, T2 produced in shafts (1) and (2). (b) Determine the rotation angle DA of gear D with respect to flange A. Answers: (a) T₁ = (b) P DIA Nc WWAMACOM Save for Later C 9.3808 = i 2.1378 e Textbook and Media NB L₁ B D TD ksi, 1₂: = i 14.5924 ksi. Attempts: 1 of 5 used Submit Answer
A circular-closed-tube shaft, with an outer radius of 20 mm and an inner radius of 15 mm, and 650 mm long, is transmitting 50kW of power while rotating at a frequency of 20HZ. Compute the maximum shear stress (in Pa) and the angle of twist (in degree) for the shaft. The shear modulus G is 100 GPa. Hint: Please refer to the table of K and Q factors in the lecture notes.

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