How do you calculate pressure vessel stress? A pressure vessel is assumed to be a thin walled pressure vessel when the thickness of the vessel is less than 1/20 of its radius….List of Equations: Parameter Formula Spherical pressure vessel Hoop stress (σ1) (pgr)/(2t) Longitudinal stress ( σ2) (pgr)/(2t) Maximum in-plane shear stress (τmax(in plane)) 0 […]
Why is MRP called a push system?
Why is MRP called a push system? The Material Requirements Planning (MRP) mentioned above is a push system since there are no prior WIP limitations. Goods are produced under the master production schedule with no regard to the current status. What is the difference between push and pull manufacturing? “Push type” means Make to Stock […]
How do you diagnose a bad brake master cylinder?
How do you diagnose a bad brake master cylinder? If the fluid is leaking past the seals inside the cylinder, the pedal may feel firm for a moment but won’t hold steady; it’ll feel spongy and keep sinking towards the floor. When a master cylinder begins to fail, sometimes the brakes will feel fine one […]
What is a photovoltaic effect in a solar cell?
What is a photovoltaic effect in a solar cell? The photovoltaic effect is a process that generates voltage or electric current in a photovoltaic cell when it is exposed to sunlight. It is this effect that makes solar panels useful, as it is how the cells within the panel convert sunlight to electrical energy. How […]
Does Weight Affect coefficient of friction?
Does Weight Affect coefficient of friction? Also, the coefficient of friction doesn’t depend on the mass of the object. Does angle affect force? As the angle is increased, the acceleration of the object is increased. The explanation of this relates to the components that we have been drawing. As the angle increases, the component of […]
What energy transformation occurs when you eat food?
What energy transformation occurs when you eat food? “When people consume food, the body utilizes the chemical energy in the bonds of the food and transforms it into mechanical energy, a new form of chemical energy, or thermal energy” (What Is Energy Transformation?, 2014, par. Which statement describes the energy transformation that occurs when a […]
How does crystallinity affect polymer properties?
How does crystallinity affect polymer properties? Crystallinity: The crystallinity of the polymer increases strength, because in the crystalline phase, the intermolecular bonding is more significant. Hence, the polymer deformation can result in the higher strength leading to oriented chains. How does molecular weight affect crystallinity? Narrow molecular weight, linear polymer chains, and high molecular weight […]
What is the coefficient of friction between the crate and the floor?
What is the coefficient of friction between the crate and the floor? Static and Kinetic Friction The coefficient of static friction between the crate and floor is 0.700 and the coefficient of kinetic friction is 0.600. Is rubber a grippy? Rubber is grippy due to the massive amount of friction that occurs between objects. What […]
How do you know if a liquid is Newtonian?
How do you know if a liquid is Newtonian? A classic Newtonian fluid is water. Water has a very predictable viscosity and will always flow predictably regardless of the forces acting on it. Newtonian fluids also have predictable viscosity changes in response to temperature and pressure changes. What is Newtonian and non-Newtonian fluids? Newtonian liquids […]
What are the challenges of space travel?
What are the challenges of space travel? Problem: Space travel can present extreme environments that affect machine operations and survival. Like humans, machines are impacted by gravity, propulsive forces, radiation, gases, toxins, chemically caustic environments, static discharge, dust, extreme temperatures, frequent temperature variations and more. What was the most dangerous space mission? Apollo 1 – […]