Duncan Engineering Senior Design Engineer Interview Questions, Process, and Tips

Selection criteria for pneumatic cylinders and valves

• Consider the application requirements such as force, speed, and stroke length

• Select the appropriate cylinder type such as single-acting, double-acting, or rodless

• Choose the valve type based on the required flow rate and pressure

• Consider the environment and operating conditions such as temperature and humidity

• Ensure compatibility between the cylinder and valve compone...read more

The bore size depends on the lifting mechanism and the required lifting speed.

• Consider the lifting mechanism (hydraulic, pneumatic, electric, etc.)

• Determine the required lifting speed

• Calculate the force required to lift 500kg

• Select a bore size that can generate the required force and speed

Direction control valve controls the flow of fluid in hydraulic systems. Different center positions include open, closed, and neutral.

• Direction control valve regulates the flow of fluid in hydraulic systems

• Different center positions include open, closed, and neutral

• Open center position allows fluid to flow through the valve even when it is not actuated

• Closed center position blocks the flow of fluid when the valve is no...read more

A positioner is a device used to control the position of an object or system.

• Positioners use various mechanisms such as motors, gears, and actuators to move and control the position of objects.

• They are commonly used in industrial automation, robotics, and manufacturing processes.

• Positioners can be manual or automated, depending on the application.

• Examples of positioners include robotic arms, CNC machines, and linear st...read more