30. Repeat Problem 28, except using a shaft that is rotating and transmitting a torque of 150 N⚫m from the left bear- ing to the middle of the shaft. Also, there is a profile key- seat at the middle under the load. 28. The shaft shown in Figure P5-28 is supported by bear- ings at each end, which have bores of 20.0 mm. Design the shaft to carry the given load if it is steady and the shaft is stationary. Make the dimension a as large as pos- sible while keeping the stress safe. Determine the required d = 20mm D = ? R = ?| 5.4 kN d=20mm Length not to scale -a = ?- +а= a = ? + -125 mm- -250 mm- FIGURE P5-28 (Problems 28, 29, and 30)

30. Repeat Problem 28, except using a shaft that is rotating and transmitting a torque of 150 N⚫m from the left bear- ing to the middle of the shaft. Also, there is a profile key- seat at the middle under the load. 28. The shaft shown in Figure P5-28 is supported by bear- ings at each end, which have bores of 20.0 mm. Design the shaft to carry the given load if it is steady and the shaft is stationary. Make the dimension a as large as pos- sible while keeping the stress safe. Determine the required d = 20mm D = ? R = ?| 5.4 kN d=20mm Length not to scale -a = ?- +а= a = ? + -125 mm- -250 mm- FIGURE P5-28 (Problems 28, 29, and 30)

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

See similar textbooks

Similar questions

Please answer part a and b
In the figure below is a proposed shaft design. The shaft is designed with a motor attached to the overhang (right side) with a flexible coupling. The motor provides a torque of 2500 lbf·in at a speed of 1200 rpm. A spur gear with a 20° pressure angle and a pitch diameter of 4 in is located at the key seat in between the two bearings and supposed to transmit the power out. A ball bearing and cylindrical bearing are planned for the left and right support respectively. Determine the minimum fatigue factor of safety by evaluating at any critical locations. Use the DE-ASME Elliptic fatigue criterion. Compute the deformation using an approximated shaft of 1.875 in uniform diameter and determine if it has adequate rigidity by comparing against the number given in Table 7-2.
Q: Figure (1) shows a schematic drawing of a countershaft which is part of the conveyor system and supports two belt pulleys (A & B). The belt tensions are parallel for pulley B and inclincd with angle 45° for pulley A. The pulley A reccives a power from a motor and then delivers to conveyor belt through pulley B. All dimensions are in mm. Required: Design the shaft as shown in figure (1) at points O, A, B & E. Pulley B Material Discharge Material Fead Pulley A Conveyor System -Tail Pulley Gear box- Sepport Belt Motor Drive balt 300 310.5 N 400 46.5 N 150 Figure (1) 250 dia.- 300 dia. 50 N Pulley A Pulley B 270 N Page 1 of 1
please i want a clear answer with detailed solution
Please answer all parts
A 15 kW and 1200 motor drives a compressor at 300 a pair of spur gears having . The center-to-center distance between the shafts is 400 . The motor pinion is made of forged steel having an allowable static stress as 210 MPa, while the gear is made of cast steel having allowable static stress as 140 MPa . Assuming that the drive operates 8 to 10 hours per day under light conditions , find from the standpoint of strength Module , 2. Fare and 3. Number of teeth and pitch circle diameter of each gear 2. Check the gears thus designed from the consideration of Static tooth load or endurance strength of the tooth flexural endurance limil (sigma_{\epsilon}) may be taken as 400 MPa 3. Check the gears thus designed from the consideration of wear surface endurance limit ( sigma epsilon x ) may be taken 700 MPa b ^ pi ( 6.154 - 0512/pi; F_{N}
Please prove the answer to this exercise, the answer is already given, written in bold. Thank you
Solve both and show full solutions for both
Photo by Norbert Schnitzler, CC BY-SA 2.0 simple model 36 in bearing bearing fixed support A simplified model of two solid circular shafts connected by two rigid gears is given below. Determine: (1) the torque in shaft c-d to the nearest in-lb and (2) the angle of twist at point a in degrees with two decimal places. b bearing bearing a 62 in Notes: top view (sketch not to scale) - gear b radius= 1.25 in - gear c radius = 4.60 in - shaft ab radius = 1.00 in -shaft cd radius = 0.75 in - shear modulus = 12000 ksi 1100 in-lb
question is in the picture below
Problem 4. A 16-tooth 240 Bhn steel spur pinion having a pressure angle of 20° and rotating at 720 rev/min drives a 28-tooth 240 Bhn steel gear having a 2.5 -in face and a diametral pitch of 5 teeth/in. Find the factor of safety of this drive based on bending strength if 17.5 hp is transmitted. Use Ko=Ks=1, Km=1.6 and Qv=7.
Find the greatest and smallest values of the velocity ratio of two shafts joined with a universal coupling when the axes are at 60o to each other. Produce a graph of velocity ratio against angle for ? to proof the calculated results.