What controls the direction of motion of actuator? In simple terms, it is a “mover”. An actuator requires a control signal and a source of energy. The control signal is relatively low energy and may be electric voltage or current, pneumatic, or hydraulic fluid pressure, or even human power. Which of the following components are […]
What is the rate of customer demand called?
What is the rate of customer demand called? Takt time Which of these is the best definition of takt time? Takt time is the rate at which you need to complete a product in order to meet customer demand. It comes from the German word “Takt,” meaning beat or pulse in music. Within manufacturing, takt […]
How do you calculate retraction speed of a cylinder?
How do you calculate retraction speed of a cylinder? The retraction speed of a cylinder rod is equal to the oil flow rate divided by the annular piston area, as Figure 2-25 shows. Since there is less volume to fill during retraction, the rod will retract faster than it extends for any given flow rate. […]
What is the concurrent engineering approach and why should project managers be aware of it?
What is the concurrent engineering approach and why should project managers be aware of it? [Concurrent engineering] brings together, from project inception, multiple individuals to address all angles of a project and enables the accumulation of knowledge and information so as to reduce downstream risks and anticipate constructability, operability, and maintainability expectations.” What is the […]
How does cathodic protection on a pipeline work?
How does cathodic protection on a pipeline work? In essence, cathodic protection connects the base metal at risk (steel) to a sacrificial metal that corrodes in lieu of the base metal. The technique of providing cathodic protection to steel preserves the metal by providing a highly active metal that can act as an anode and […]
How do you read a tube in manometer?
How do you read a tube in manometer? Measurement of Pressure with the Manometer 2-1. In its simplest form the manometer is a U-tube about half filled with liquid. 2-4. At left, equal pressure is imposed on the fluid in the well and in the indicating tube. 3-1. At left, equal pressure is imposed on […]
What is a combined heat and power system?
What is a combined heat and power system? CHP is an energy efficient technology that generates electricity and captures the heat that would otherwise be wasted to provide useful thermal energy—such as steam or hot water—that can be used for space heating, cooling, domestic hot water and industrial processes. What is an example of cogeneration? […]
What is non ohmic Behaviour?
What is non ohmic Behaviour? A non- Ohmic device is one that does not have a constant resistance. A light bulb is a simple example; the filament undergoes huge changes in temperature when current passes through it. Therefore, the resistance of the filament is not constant, rather, it increases with increased current. What can cause […]
What is the difference between traction and hydraulic elevators?
What is the difference between traction and hydraulic elevators? A hydraulic elevator uses an electronic pump that pushes oil into a cylinder where the pressure is increased, pushing a piston and causing the elevator to rise. A traction elevator, on the other hand, uses a system of cables, pulleys, and counterweights to lift the cab. […]