Design a muff coupling to connect two shafts transmitting a 40kW at 120r.p.m. The permissible shear and crushing stress for shaft and key material are 30MPA and 80MPA respectively. The material of muff is cast iron with permissible shear stress 15MPA. Assume the maximum torque transmitted is 25% greater than the mean torque.

Design a muff coupling to connect two shafts transmitting a 40kW at 120r.p.m. The permissible shear and crushing stress for shaft and key material are 30MPA and 80MPA respectively. The material of muff is cast iron with permissible shear stress 15MPA. Assume the maximum torque transmitted is 25% greater than the mean torque.

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

Design a muff coupling to connect two shafts transmitting 40 kW at 120 r.p.m. The permissibleshear and crushing stress for the shaft and key material (mild steel) are 30 MPa and 80 MParespectively. The material of muff is cast iron with permissible shear stress of 15 MPa. Assumethat the maximum torque transmitted is 25 per cent greater than the mean torque
Design a typical rigid flange coupling for connecting a motor and a centrifugal pump shafts. The coupling needs to transmit 15 KW at 1000 rpm. The allowable shear stresses of the shaft, key and bolt materials are 60 MPa, 50 MPa and 25 MPa respectively. The shear modulus of the shaft material may be taken as 84GPa. The angle of twist of the shaft should be limited to 1 degree in 20 times the shaft diameter. Note: show complete handwritten solution
Design a typical rigid flange coupling for connecting a motor and a centrifugal pump shafts. The coupling needs to transmit 15 KW at 1000 rpm. The allowable shear stresses of the shaft, key and bolt materials are 60 MPa, 50 MPa and 25 MPa respectively. The shear modulus of the shaft material may be taken as 84GPa. The angle of twist of the shaft should be limited to 1 degree in 20 times the shaft diameter. Note: show complete solution
Design and draw a neat sketch of a cast iron protective type flange coupling to transmit “P” kW at “N” rpm. from a turbine generating n electric motor to a compressor. The service factor may be assumed as 1.35. The following permissible stress may be used: Shear stress for shaft, bolt and key material = 40 MPaCrushing stress for bolt and key = 80 MPaShear stress for cast iron = 8 Mpa Speed N in Rpm = 200Power P in kN = 16
Design a muff coupling to connect two shafts transmitting 42 kW at 130 rpm. The permissible shear and crushing stress for the shaft and key material (mild steel) are 32 MPa and 81 MPa respectively. The material of muff is cast iron with permissible shear stress of 16 MPa. Assume that the maximum torque transmitted is 28 per cent greater than the mean torque.
7. Design a muff coupling for joining shafts transmitting 8 kW at 400 rpm. The shaft and the key are made of steel with 45 MPa and 80 MPa allowable stresses in shear and crushing, respectively. The material of the sleeve is CI, with allowable shear stress 10 MPa. Service factor KS =1.2.
Design and draw a neat sketch of a cast iron protective type flange coupling to transmit “P” kW at “N” rpm. from a turbine generating n electric motor to a compressor. The service factor may be assumed as 1.35. The following permissible stress may be used: Shear stress for shaft, bolt and key material = 40 MPaCrushing stress for bolt and key = 80 MPaShear stress for cast iron = 8 MpaSpeed N in Rpm = 250Power P in kN = 21
-Two shafts made of plain carbon steel are connected by a rigid protective type flange coupling. The shafts are running at 500 r.p.m. and transmit 25 kW power. Design the coupling completely for overload capacity 25 percent in excess of mean transmitted torque capacity. Assume the following permissible stresses for the coupling components : Shaft — Permissible tensile stress = 60 MPq; Permissible shear stress = 35 MPa Keys — Rectangular formed end sunk key having permissible compressive strength = 60 MPa Bolts — Six numbers made of steel having permissible shear stress = 28 MPa Flanges — Cast iron having permissible shear stress =12 MDA~
5. Design a sleeve coupling for the transmission of 12 kW at 300 rpm by two connected steel shafts. Take service factor KS 1.25. The sleeve is made of CI. The key and the shaft are made of the same material. Allowable stress: Shear stresses in key and shaft 50 MPa Crushing stress in key= 100 MPa Shear stress in CI sleeve = 10 MPa
Design a muff coupling to connect shaft transmitting 40kw at 120rpm .the permissible shear and crushing stresses for the shaft and the key material are 30Mpa and 80Mpa respectively .the material for muff is cast iron with permissible shear stress is 15Mpa .assume that maximum torque transmitted is 25 percent greater than mean torque.
(4) An electric motor purchased by your employer surprisingly arrived without a keyway in the shaft. The motor has power rating of 7.5kW & 1,800rpm & has a shaft of Ø17mm. It will be used to drive a centrifugal pump using cast iron sheave. Design the square key to be used in the assembly based on maximum bearing & shearing stresses of 580MPa & 370MPa, respectively, and factor of safety of 5.
Design and draw a neat sketch of a cast iron protective type flange coupling to transmit Power19 kW at speed 300 rpm. from a turbine generating n electric motorto a compressor. The service factor may be assumed as 1.35. The following permissible stress may be used; Shear stress for shaft, bolt and key material = 40 MPa, Crushing stress for bolt and key= 80 MPa, Shear stress for cast iron = 8 Mpa