A 500 mm pulley running at 400 rpm drives another pulley of the same diameter by means of a 12 mm thick leather belt with an allowable belt stress of 2.86 MPa. The power transmitted is 21 kW. If the center distance between shafts is 2.5 meters, determine what must be the approximate length of the belt.

A 500 mm pulley running at 400 rpm drives another pulley of the same diameter by means of a 12 mm thick leather belt with an allowable belt stress of 2.86 MPa. The power transmitted is 21 kW. If the center distance between shafts is 2.5 meters, determine what must be the approximate length of the belt.

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

A torsion dynamometer is fitted on a turbine shaft to measure the angle of twist. It is observed that the shaft twists 2° in a length of 5 m at 600 r.p.m. The shaft is solid and has a diameter of 250 mm. If the modulus of rigidity is 84 GPa, find the power transmitted by the turbine.
In a gearbox, a spur gear is mounted on a shaft at equal distances from twosupporting bearings. The shaft and mounted gear turn together at a speed of3600RPM. The gearbox is designed to transmit a maximum power of 3kW. Thegear contact angle is φ = 20°. The pitch diameter of the gear is dp = 30 in. a) Findthe radial force on each of the two bearings supporting the shaft.The ratio of the two bearings’ length and diameter is L/D = 0.5. The bearings aremade of acetal resin material with the following limits:Surface velocity limit, V, is 5m/s.Average surface-pressure limit, P, is 7 MPa.PV limit is 3000 psi-ft/min.b) Find the diameter of the shaft in order not to exceed the stated limits.
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 ?
Calculate the rection forces when the radius of the pulleys are 0,1 m and K = 1200 N.
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)]
The electric motor exerts a 500-N-m torque on the aluminum shaft ABCD when it is rotating at a constant speed. The torques exerted on pulleys Band Care as shown. Take a = 1.4 m, b= 0.9 m, and G= 27 GPa. NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part. 300 N. m 200 N. m 45 mm 44 mm 40 mm Im Determine the angle of twist between Band C. The angle of twist between Band Cis|
A horizontal shaft AD supported in bearings at A and B and carrying pulleys at C and D is totransmit 75 kW at 500 r.p.m. from drive pulley D to off-take pulley C, Calculate the diameter of shaft. The data given is : P1 = 2 P2 (both horizontal), Q1 = 2 Q2 (bothvertical), radius of pulley C = 220 mm, radius of pulley D = 160 mm, allowable shear stress = 45 MPa.[Ans. 100 mm] Given CD=350mm CA=100mm AB=150mm BD=100mm
The axis ABCD receives a torque of 500Nm from the motor and transmits movement to other devices, by means of belts and pulleys connected at B and C. If it is known that the torques exerted on pulleys B and C are as shown In the figure, determine the minimum radius the shaft must have. You should consider that at point D of the motor there is a bearing that acts as a support for the shaft as at point A. The material of the shaft and its allowable shear stress are indicated in the drawing.Determine:to. Free-Body diagram.b. Shear force diagrams.c. Bending moment diagrams.d. Identification of the critical point of the axis.e. Calculation of the axis radius. tperm=80MPa
Two 400 mm diameter pulley are keyed to a simply supported shaft 500mm apart. Each pulley is 100 mm from its support and has horizontal belts, tension ratio being 2.5. If the shear stress is to be limited to 80MPa while transmitting 45 kW at 900 rpm. Find the shaft if it is to be used for the input - output belts being on the same or opposite sides.
Two 400 mm diameter pulleys are keyed to a simply supported shaft 500 mm apart. Each pulley is 100 mm from its support and has horizontal belts, tension ratio being 2.5. If the shear stress is to be limited to 80 MPa while transmitting 45 kW at 900 rpm, find the shaft diameter if it is to be used for the input-output belts being on the same or opposite sides.
A turbine rotor is mounted on a stepped shaft that is fixed at both ends as shown in The torsional stiffnesses of the two segments of the shaft are given by k = 3,000 N-m/rad and k2 = 4,000 N-m/rad. The turbine generates a harmonic torque given by M(1) = Mo cos wt about the shaft axis with M, = 200 N-m and w = 500 rad/s. The mass moment of inertia of the rotor about the shaft axis is J, = 0.05 kg-m?. Assuming the equivalent torsional damping constant of the system as e, = 2.5 N-m-s/rad, determine the steady-state response of the rotor, 0(1). O(1) M(1) = Mg cos etr %3! Turbine rotor, Jo
A shaft having length equal to 10 m and diameter equal to (50+ 01) mm is simply supported at both ends. The shatt carries four masses (150 + 01) kg, (200 + 01) kg, (250 +01) kg and (300 + 01) kg. These masses are located at a distance of 1.5m, 2.5 m, 5.5 mand 7.5 m from the left hand side support, respectively. The modulus of elasticity, E, for the material of the shaft is 200 GN/m? and mass density for the shaft material is 7500 kg/m?3. Determine critical speed of the shaft in revolutions per minute for the following two cases: 1. Effect of the mass of the shaft is neglected. 2. Effect of the mass of the shaft is considered. What is the usefulness of the answers determined in this problem?