Learning Goal: To determine the angle of twist for a circular shaft that is composed of varying cross sections and that is subjected to a given power and frequency load. As shown, a shaft is composed of five cylindrical sections. A motor is attached at F and supplies the shaft with P = 245.0 hp at a speed of w 1800 rpm. This power is transferred through the shaft without any loss and is completely removed by the pulley at A. Let a = 7.250 in , b = 12.00 in. c = 15.50 in. d₁ = 4.000 in. d₂ = 5.000 in, and d3 = 7.800 in. Assume that the modulus of rigidity for the entire shaft is G = 11.0 x 106 psi and that the sections of the shaft are fastened in such a way that they cannot fail. Also, assume that the shaft Part A- Internal torques in the shaft rigidly supported along its length such that it is always in static equilibrium. Determine the internal torques in sections AB, BC, CD, DE, and EF. Express your comma-separated answers in lb-ft to four significant figures. ▸ View Available Hint(s) 883 d, 4₂ C d₂ D d₂

Learning Goal: To determine the angle of twist for a circular shaft that is composed of varying cross sections and that is subjected to a given power and frequency load. As shown, a shaft is composed of five cylindrical sections. A motor is attached at F and supplies the shaft with P = 245.0 hp at a speed of w 1800 rpm. This power is transferred through the shaft without any loss and is completely removed by the pulley at A. Let a = 7.250 in , b = 12.00 in. c = 15.50 in. d₁ = 4.000 in. d₂ = 5.000 in, and d3 = 7.800 in. Assume that the modulus of rigidity for the entire shaft is G = 11.0 x 106 psi and that the sections of the shaft are fastened in such a way that they cannot fail. Also, assume that the shaft Part A- Internal torques in the shaft rigidly supported along its length such that it is always in static equilibrium. Determine the internal torques in sections AB, BC, CD, DE, and EF. Express your comma-separated answers in lb-ft to four significant figures. ▸ View Available Hint(s) 883 d, 4₂ C d₂ D d₂

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

The max speed for the servo shown is 130RPM when connected to 6V. Assume that the gearbox on your servo is able to output a torque of 1.5 kg-cm while turning at this speed. Using the number of teeth on each gearprovided in the table, determine the torque and rotational speed of the output shaft on the DC motor. HINT: Work backwards from the output shaft and use the equations developed in class that relate the number of teeth to the torque. When working back from the output shaft to gear 7/6, realize that the “torque” transmitted by gear 7 is the SAME as the torque transmitted by gear 6 since they are joined. Then, relate the torque of gear 6 to gear 5 based on their numbers of teeth. Since gears 5 and 4 are actually one piece, the torque in 4 and 5 will be the same (as was the case for gears 6 and 7). Repeat for the other gears, working your way all the way back to the DC motor.
2) A shaft of a diameter of 30 mm is transmitting 14,9 kW at 400 rpm. The shaft is connected to a pulley of an axial length of 160 mm with the help of a rectangular key 16 mm x 12 mm ( b=16 mm, t=12mm). (The spokes are connected to the pulley, but the pulley is not shown in the figure). Axial length of the key, hub and pulley are 160 mm. Determine the shear and normal stresses developed in the rectangular key. Rectangular key Spokes A R Hub Shaft
6. A punch punches a 1-in. diameter hole in a steel plate % inch thick every 10 sec. The actual punching takes 1 sec. The ultimate shear strength of the plate is 60,000 psi. The flywheel of the punch press has a mass moment of inertia of 500 in-lb sec2and rotates at a mean speed of 150 rpm. What is the total speed fluctuation of the flywheel in rpm?
Q 16- Find the length of a belt necessary to drive a pulley of 80 cm diameter running parallel at a distance of 12 m from the driving pulley of 480 cm diameter ?
A pulley 610 mm diameter is driven at 300 revs/min by a belt, the tensions in the tight and slack sides of the belt being 670 N and 270 N. Find the power transmitted.
The problem is stated below. However, change the position of torque to point C from point D. What is the effect of variation of torque placement in shaft CB?
A motor with a torque of 37.26N/m and a speed of 120°/sec rotates a robotic arm that consists of two gears (one with a diameter of 4cm and 8 gear teeth and the other with a diameter of 10cm and 24 gear teeth). The arm is attached to the gears, and the arm must lift approximately 50 pounds of weight. The arm needs to lift about 1m distance. Find the following? 1) Find the amount of force required to lift the 50 pounds of weight 2) Find the power needed to lift 50 pounds. 3) Find the gear ratio for the gears to work properly. DC Motor Worn Gear Gear 50 Ibs
A 25-hp. 1750-rpm electric motor drives a machine through a multiple V-belt. The size 5V belts has unit weight of 0.012 lbf/in.) The pulley on the motor shaft has a 3.7-in. pitch diameter and geometry is such that the angle of wrap, o is 165º. k is consenvatively assumed that the maximum belt tension (F1) should be limited to 150 lbf, and that the coefficient of friction will be at least 0.512. [Hints: Use equations 17.18, 17.21, (h)]
An unbalanced small motor with me-1.2 kg.m is directly bolted to a machine with a mass of 500 kg. The machine is attached to the floor using an isolator with k=75000 N/m, e=1850 Ns/m (Weight of the motor is neglected.) a) Determine that how much percent of the force is transmitted to the floor if motor turns with n-250 rpm. b) Determine the rotation speed of the motor corresponding to the damped natural frequency of the system. e) Determine the vibration displacement amplitude at the speed calculated in part b).
A wagon weighing 5100 Kg moving at a speed of 8 km/h has to be brought to rest. Springs made of wire diameter 25mm with a Dm of 250mm and with 24 turns are available. Find the number of springs required in buffer to stop the wagon at a compression of 180mm. b)A close coiled helical spring is made of diameter wire 25mm. The spring index is 8. Findthe number of turns required and maximum allowable load if the allowable shear stress is100 MPa and elongation is limited to 40mm. [G=80 GPa
Torsian in a Bolid wY Awollow tube The figure above shows a rig which is used to find the angle of twist for a shaft. A torque is applied to the shaft by applying a force to the torque arm, as shov on the right hand side of the figure above. Given Load applied to end of torque arm = 90 N Length of torque moment arm = 150 mm Length of shaft(L) = 300 mm Young's modulus of steel = 205 kN/mm22 Modulus of rigidity 84 kN/mm22 Solid shaft diameter = 15 mm
A solid constant-diameter circular shaft is subjected to the torques of TA = 480 lb-ft, TB = 1060 lb-ft, Tc= 860 lb-ft, and Tp = 280 lb-ft, acting in the directions shown. The bearings shown allow the shaft to turn freely. (a) Plot a torque diagram showing the internal torque in segments (1), (2), and (3) of the shaft. Use the sign convention presented in %D Section 6.6. (b) If the allowable shear stress in the shaft is 5800 psi, what is the minimum acceptable diameter for the shaft? TB TA Tc (1) Tp (3) В C D Answer: (a) T1 = Ib-ft T2 = Ib-ft T3 = Ib-ft (b) d = in.