THERMAL SYSTEMS Trainee Mechanical Engineer Interview Questions and Answers

Various types of oils can be used in hydraulic systems, including mineral oil, synthetic oil, and biodegradable oil.

• Mineral oil is commonly used in hydraulic systems due to its cost-effectiveness and compatibility with most systems.

• Synthetic oil is used in high-performance hydraulic systems for better temperature resistance and longevity.

• Biodegradable oil is used in environmentally sensitive areas to reduce the impact

Various types of valves are used in hydraulic systems, including directional control valves, pressure control valves, flow control valves, and check valves.

• Directional control valves are used to control the direction of fluid flow in the system.

• Pressure control valves are used to regulate the pressure within the system.

• Flow control valves are used to control the flow rate of the fluid in the system.

• Check valves are use...read more

Types of bearings include ball, roller, plain, and magnetic. Welding methods include MIG, TIG, and stick welding.

• Ball bearings use balls to reduce friction and support radial and axial loads.

• Roller bearings use cylindrical or tapered rollers to support heavy loads.

• Plain bearings have a sliding surface and are used for low-speed and high-load applications.

• Magnetic bearings use magnetic fields to support rotating shafts.

• ...read more

Casting is a manufacturing process in which a liquid material is poured into a mold and allowed to solidify.

• Types of casting include sand casting, investment casting, die casting, and continuous casting.

• Sand casting involves pouring molten metal into a sand mold.

• Investment casting involves creating a wax pattern and then coating it in ceramic before pouring in the molten metal.

• Die casting involves injecting molten meta...read more