This document discusses hoisting and dynamics of rotation. It provides examples and explanations of:
1) The forces, torques, and equations of motion involved when a hoist drum raises or lowers a load while accelerating or decelerating. This includes the inertia couple of the drum opposing changes in rotation and friction torque opposing rotation.
2) Specific examples that calculate the torque required to raise a load or bring it to a stop, given information like the drum's moment of inertia, load mass, acceleration, and friction torque.
3) Diagrams illustrate the forces and torques acting on the hoist drum and load in different scenarios like raising or lowering while accelerating versus coming to a stop
This document provides an overview of properties of pure substances using water as an example. It defines key concepts like quality of steam, saturation temperature, and critical point. It also includes sample problems calculating thermodynamic properties of water/steam systems at various states from data provided in steam tables and phase diagrams. The problems involve determining states, properties, volumes, and phase changes resulting from changes in conditions like pressure, temperature, and heat addition.
Crushing of coal and calculation of size reduction efficiency.Utsav Kant
The document discusses the history and evolution of coal crushers. It begins with an overview of the importance of crushing coal and the early developments starting in the 1800s. Key crushers discussed include the Cornish rolls, jaw crushers, gyratory crushers, single and double roll crushers, rotary breakers, impact crushers, and hammer mills. The mechanisms and operating principles of various crushers are explained. Factors for selecting different crushers based on application are also reviewed.
Fluid tutorial 2_ans dr.waleed. 01004444149 dr walid
This document contains 11 multi-step physics problems involving fluid mechanics concepts like pressure, viscosity, density, and fluid flow. The problems are solved with relevant equations for ideal gases, compressible fluids, laminar flow, and viscometry. Detailed calculations are shown to determine values like mass, pressure, shear stress, drag force, velocity, and viscosity based on given variables like temperature, volume, pressure, velocity, dimensions, torque, and fluid properties.
3D Printed military helicopter heat exchangerMaziarMadadi1
This document discusses a 3D printed heat exchanger for cooling transmission oil on military helicopters. The heat exchanger was printed from an aluminum alloy using laser powder bed fusion on an EOS M290 machine. It has a gyroid infill structure that improves heat transfer efficiency. The 3D printed design is half the volume of the existing design and four times more effective at cooling. It was printed in one piece without supports using minimal post-processing.
This document discusses hoisting and dynamics of rotation. It provides examples and explanations of:
1) The forces, torques, and equations of motion involved when a hoist drum raises or lowers a load while accelerating or decelerating. This includes the inertia couple of the drum opposing changes in rotation and friction torque opposing rotation.
2) Specific examples that calculate the torque required to raise a load or bring it to a stop, given information like the drum's moment of inertia, load mass, acceleration, and friction torque.
3) Diagrams illustrate the forces and torques acting on the hoist drum and load in different scenarios like raising or lowering while accelerating versus coming to a stop
This document provides an overview of properties of pure substances using water as an example. It defines key concepts like quality of steam, saturation temperature, and critical point. It also includes sample problems calculating thermodynamic properties of water/steam systems at various states from data provided in steam tables and phase diagrams. The problems involve determining states, properties, volumes, and phase changes resulting from changes in conditions like pressure, temperature, and heat addition.
Crushing of coal and calculation of size reduction efficiency.Utsav Kant
The document discusses the history and evolution of coal crushers. It begins with an overview of the importance of crushing coal and the early developments starting in the 1800s. Key crushers discussed include the Cornish rolls, jaw crushers, gyratory crushers, single and double roll crushers, rotary breakers, impact crushers, and hammer mills. The mechanisms and operating principles of various crushers are explained. Factors for selecting different crushers based on application are also reviewed.
Fluid tutorial 2_ans dr.waleed. 01004444149 dr walid
This document contains 11 multi-step physics problems involving fluid mechanics concepts like pressure, viscosity, density, and fluid flow. The problems are solved with relevant equations for ideal gases, compressible fluids, laminar flow, and viscometry. Detailed calculations are shown to determine values like mass, pressure, shear stress, drag force, velocity, and viscosity based on given variables like temperature, volume, pressure, velocity, dimensions, torque, and fluid properties.
3D Printed military helicopter heat exchangerMaziarMadadi1
This document discusses a 3D printed heat exchanger for cooling transmission oil on military helicopters. The heat exchanger was printed from an aluminum alloy using laser powder bed fusion on an EOS M290 machine. It has a gyroid infill structure that improves heat transfer efficiency. The 3D printed design is half the volume of the existing design and four times more effective at cooling. It was printed in one piece without supports using minimal post-processing.
This document contains chapter 6 from a textbook on mechanics of materials. It includes 13 multi-part example problems involving the calculation of shear and moment diagrams for beams and shafts subjected to different loading conditions. The problems cover statically determinate beams with various end supports and load configurations, including point loads, distributed loads, overhanging sections, and compound sections. The solutions show the application of the principles of equilibrium to draw shear and moment diagrams. Key steps include writing shear and moment equations and evaluating the diagrams at specific locations.
This document contains 3 engineering design problems involving calculations to determine the necessary dimensions of mechanical components based on given load and stress criteria:
1) Calculate the diameter of a connecting rod given a load of 65kN and maximum tensile stress of 35N/mm^2.
2) Find the minimum punch diameter for a hole in a 20mm thick steel plate under a 380kN force and 300N/mm^2 ultimate shear strength.
3) Determine the suitable diameter of a single eye end on a tractor trolley under a 25kN load based on a maximum bearing pressure of 12N/mm^2.
Caterpillar cat 320 b excavator (prefix 9kr) service repair manual (9kr00001 ...uujjfjkkkdmme
The document provides instructions for removing and installing various components on a 320B excavator, including the counterweight, fuel tank, auxiliary fuel refueling pump, and seat assembly. The counterweight removal involves disconnecting hoisting brackets or eyebolts and removing mounting bolts. Fuel tank removal requires draining fuel and disconnecting hoses and electrical connections. The auxiliary fuel pump is uninstalled by disconnecting hoses and electrical connectors and removing mounting bolts. Seat removal is accomplished by removing mounting bolts, the seatbelt, and disconnecting the cable assembly.
This document contains the solutions to 6 homework problems from a thermodynamics course. Problem 1 calculates how high a person could climb using the energy from 1 liter of milk. Problem 2 calculates the minimum amount of dry ice needed to cause a plastic bottle to explode. Problem 3 determines the altitude change from a decrease in air pressure measured by a hiker. The solutions show calculations using concepts like the ideal gas law, kinetic energy of gases, and relationships between pressure, density and altitude.
The document repeatedly states "Information Handling Services, 2000" with no other details provided. It consists solely of this phrase printed over 100 times, suggesting it relates to information handling services in the year 2000, but without any other context to further summarize.
The document discusses energy losses in pipeline systems. It covers topics such as velocity profiles in pipes, sources of energy loss including shock losses at enlargements and contractions, friction losses, and examples of calculating losses. Bernoulli's equation is applied to analyze pressure and velocity changes between points along pipelines. Key sources of loss are friction against pipe walls and shocks caused by changes in pipe diameter.
Fluid tutorial 3_ans dr.waleed. 01004444149 dr walid
This document contains solutions to 4 tutorial problems involving fluid mechanics concepts like pressure, density, and manometers. Problem 1 calculates absolute pressure given relative pressures and fluid densities. Problem 2 finds the pressure difference between two points using different fluid densities. Problem 3 determines liquid levels in piezometer tubes using given pressure and densities. Problem 4 uses a manometer equation to find the weight added to a piston that causes additional oil rise in an inclined tube.
1) The document discusses statics problems where objects are motionless. It focuses on balancing forces and determining unknown forces.
2) Key forces discussed include tension, normal force, friction, and gravity. Tension and normal forces are explained in more detail.
3) An example problem is worked out involving a block on an inclined plane, finding the normal and friction forces for different angles of inclination.
Design of machine elements - V belt, Flat belt, Flexible power transmitting e...Akram Hossain
This document provides the solution to a multi-part design problem involving the design of a belt drive system. It selects appropriate pulley sizes and belt widths using standard design procedures and tables. It calculates key parameters like belt stress, operating tensions, and initial tension. The initial tension is found to be reasonable compared to recommendations. The document also provides a recommendation to potentially redesign the system for greater economy.
Fluid tutorial 4_ans dr.waleed. 01004444149 dr walid
The document contains 5 problems involving calculating forces on gates, hatches, and other structures located in reservoirs, tanks, and underwater. The problems involve determining the resultant force of water, the moment needed to open a gate, the minimum air pressure to open a hatch, the mass required to open a gate at a certain water height, and the minimum force needed to support a rectangular gate. Diagrams and equations are provided for the solution to each problem.
1) The document discusses the calculation of bending and shear stresses in a beam with a rectangular cross-section.
2) Shear stress is derived to be proportional to the first moment (Q) of the cross-sectional area above the level of interest.
3) For a rectangular cross-section, the maximum shear stress occurs at the neutral axis and is 50% larger than the average shear stress.
Chess Explained - The Grunfeld by Valentin Bogdanov.pdfPrabeshShrestha16
The Grünfeld Defence (ECO codes D70–D99) is a chess opening characterised by the moves:
1. d4 Nf6
2. c4 g6
3. Nc3 d5
Black offers White the possibility of 4.cxd5, which may be followed by 4...Nxd5 and 5.e4, giving White an imposing central pawn duo. If White does not take the d5-pawn, Black may eventually play ...dxc4, when a White response of e4 again leads to the same pawn structure. In classical opening theory this imposing pawn centre was held to give White a large advantage, but the hypermodern school, which was coming to the fore in the 1920s, held that a large pawn centre could be a liability rather than an asset. The Grünfeld is therefore a key hypermodern opening, showing in stark terms how a large pawn centre can either be a powerful battering ram or a target for attack.
This document contains chapter 6 from a textbook on mechanics of materials. It includes 13 multi-part example problems involving the calculation of shear and moment diagrams for beams and shafts subjected to different loading conditions. The problems cover statically determinate beams with various end supports and load configurations, including point loads, distributed loads, overhanging sections, and compound sections. The solutions show the application of the principles of equilibrium to draw shear and moment diagrams. Key steps include writing shear and moment equations and evaluating the diagrams at specific locations.
This document contains 3 engineering design problems involving calculations to determine the necessary dimensions of mechanical components based on given load and stress criteria:
1) Calculate the diameter of a connecting rod given a load of 65kN and maximum tensile stress of 35N/mm^2.
2) Find the minimum punch diameter for a hole in a 20mm thick steel plate under a 380kN force and 300N/mm^2 ultimate shear strength.
3) Determine the suitable diameter of a single eye end on a tractor trolley under a 25kN load based on a maximum bearing pressure of 12N/mm^2.
Caterpillar cat 320 b excavator (prefix 9kr) service repair manual (9kr00001 ...uujjfjkkkdmme
The document provides instructions for removing and installing various components on a 320B excavator, including the counterweight, fuel tank, auxiliary fuel refueling pump, and seat assembly. The counterweight removal involves disconnecting hoisting brackets or eyebolts and removing mounting bolts. Fuel tank removal requires draining fuel and disconnecting hoses and electrical connections. The auxiliary fuel pump is uninstalled by disconnecting hoses and electrical connectors and removing mounting bolts. Seat removal is accomplished by removing mounting bolts, the seatbelt, and disconnecting the cable assembly.
This document contains the solutions to 6 homework problems from a thermodynamics course. Problem 1 calculates how high a person could climb using the energy from 1 liter of milk. Problem 2 calculates the minimum amount of dry ice needed to cause a plastic bottle to explode. Problem 3 determines the altitude change from a decrease in air pressure measured by a hiker. The solutions show calculations using concepts like the ideal gas law, kinetic energy of gases, and relationships between pressure, density and altitude.
The document repeatedly states "Information Handling Services, 2000" with no other details provided. It consists solely of this phrase printed over 100 times, suggesting it relates to information handling services in the year 2000, but without any other context to further summarize.
The document discusses energy losses in pipeline systems. It covers topics such as velocity profiles in pipes, sources of energy loss including shock losses at enlargements and contractions, friction losses, and examples of calculating losses. Bernoulli's equation is applied to analyze pressure and velocity changes between points along pipelines. Key sources of loss are friction against pipe walls and shocks caused by changes in pipe diameter.
Fluid tutorial 3_ans dr.waleed. 01004444149 dr walid
This document contains solutions to 4 tutorial problems involving fluid mechanics concepts like pressure, density, and manometers. Problem 1 calculates absolute pressure given relative pressures and fluid densities. Problem 2 finds the pressure difference between two points using different fluid densities. Problem 3 determines liquid levels in piezometer tubes using given pressure and densities. Problem 4 uses a manometer equation to find the weight added to a piston that causes additional oil rise in an inclined tube.
1) The document discusses statics problems where objects are motionless. It focuses on balancing forces and determining unknown forces.
2) Key forces discussed include tension, normal force, friction, and gravity. Tension and normal forces are explained in more detail.
3) An example problem is worked out involving a block on an inclined plane, finding the normal and friction forces for different angles of inclination.
Design of machine elements - V belt, Flat belt, Flexible power transmitting e...Akram Hossain
This document provides the solution to a multi-part design problem involving the design of a belt drive system. It selects appropriate pulley sizes and belt widths using standard design procedures and tables. It calculates key parameters like belt stress, operating tensions, and initial tension. The initial tension is found to be reasonable compared to recommendations. The document also provides a recommendation to potentially redesign the system for greater economy.
Fluid tutorial 4_ans dr.waleed. 01004444149 dr walid
The document contains 5 problems involving calculating forces on gates, hatches, and other structures located in reservoirs, tanks, and underwater. The problems involve determining the resultant force of water, the moment needed to open a gate, the minimum air pressure to open a hatch, the mass required to open a gate at a certain water height, and the minimum force needed to support a rectangular gate. Diagrams and equations are provided for the solution to each problem.
1) The document discusses the calculation of bending and shear stresses in a beam with a rectangular cross-section.
2) Shear stress is derived to be proportional to the first moment (Q) of the cross-sectional area above the level of interest.
3) For a rectangular cross-section, the maximum shear stress occurs at the neutral axis and is 50% larger than the average shear stress.
Chess Explained - The Grunfeld by Valentin Bogdanov.pdfPrabeshShrestha16
The Grünfeld Defence (ECO codes D70–D99) is a chess opening characterised by the moves:
1. d4 Nf6
2. c4 g6
3. Nc3 d5
Black offers White the possibility of 4.cxd5, which may be followed by 4...Nxd5 and 5.e4, giving White an imposing central pawn duo. If White does not take the d5-pawn, Black may eventually play ...dxc4, when a White response of e4 again leads to the same pawn structure. In classical opening theory this imposing pawn centre was held to give White a large advantage, but the hypermodern school, which was coming to the fore in the 1920s, held that a large pawn centre could be a liability rather than an asset. The Grünfeld is therefore a key hypermodern opening, showing in stark terms how a large pawn centre can either be a powerful battering ram or a target for attack.
