q3..Shaft a transmits 7 hp. Determine the reaction a bearings A and C knowing that these bearings will support thrust loading. The helical gears have 17.5° normal pressure angle and 25° helix angle and 14 normal diametral pitch. Dimensions in

q3..Shaft a transmits 7 hp. Determine the reaction a bearings A and C knowing that these bearings will support thrust loading. The helical gears have 17.5° normal pressure angle and 25° helix angle and 14 normal diametral pitch. Dimensions in

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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Question 1 An epicyclic gear train, as shown in Fig. 1, has a sun wheel S of 30 teeth and two planet wheels P-P of 50 teeth. The planet wheels mesh with the internal teeth of a fixed annulus A. The driving shaft carrying the sun-wheel S, transmits 4 kW at 300 r.p.m. The driven shaft is connected to an arm which carries the planet wheels. 1.1 Tabulate a table of motion for the given epicyclic gear train. 1.2 Determine the number of teeth in gear A, assume module is the same on all the gears. 1.3 Determine the speed of the arm or the driven shaft. 1.4 Determine the torque of the sun. 1.5 Determine the torque of the arm if the overall efficiency is 95 %. Arm S A a. 1 Figure 1: An epicyclic gear train
Please answer in proper units
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Q: The sunwheel D has 20 teeth, the gear B is 50 teeth, internal gear C is fixed. The input shaft rotates at 2100 r.p.m. Determine the speed of the output shaft and the torque required to fix C when the gears are transmitting 30 kW. Output shaft Input shaft D
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.
3. A pair of bevel gear have a 1:1 velocity ratio, a pitch diameter of 8 in, a face of 1% in and they rotate at 250 rpm. The teeth are 5 diametral pitch 14 % deg involute. These gears transmit 8 hp. Determine: A. the outside diameter of the gears Ans. 8.28 in Ans. 523 fpm Ans. 504 lbs B. the pitch line velocity of the gear C. the tangential force of the gear
You have been asked by your engineering company to design a complete gear and shaft system shaft that is made of steel. The solid shaft is linked with gear A, B, C and D with gear A, B and C produces torque of 15 kNm (clockwise), 30 kNm (clockwise) and 75kNm (anticlockwise). respectively each. If AB = 0.70m, BC=0.80 m and CD=0.90 m with the shafts consist of solid circular shafts with a diameter of 150 mm having the shear modulus of G= 80 GPa. a) Design and detemine the portion of the shaft which has the largest magnitude of shear stress, (7)max. Include free body diagram (FBD) in your analysis.
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.
The four gears shown are attached to a steel shaft that is rotating at 2 Hz. Gear B supplies 70 kW of power to the shaft. Of that power, 20kW are used by gear A, 20 kW by gear C and 30kW by gear D. -20KW 7OKN -20kw -30kW 2m 1.5m 1.5m B (a) If a uniform shaft diameter of 125 mm B speci fied, detenmine the angle of rotation of A relative to D. O If segment Co is to be replaced ay a hollaw Shaft with an inside diameter of 80 mm, what is the outside diameter if the stress is not to excced 70 MPa.
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