JSW Steel Junior Mechanical Engineer Interview Questions and Answers

Types of gearboxes include spur, helical, bevel, worm, and planetary. The most commonly used gearbox in our plant is the helical gearbox.

• Types of gearboxes: spur, helical, bevel, worm, planetary

• Helical gearbox is commonly used for its efficiency and smooth operation

• Spur gearbox is simple and cost-effective

• Bevel gearbox is used for right angle drives

• Worm gearbox provides high torque but lower efficiency

Industrial hydraulic system consists of various components like relief valve, pressure reducing valve, and directional control valves (DCVs) to control the flow and pressure of hydraulic fluid.

• Industrial hydraulic system uses hydraulic fluid to transmit power.

• Relief valve is used to limit the maximum pressure in the system to prevent damage.

• Pressure reducing valve is used to maintain a constant pressure in a branch of the system.

• Directional control valves (DCVs) control the f...read more

There are mainly three types of bearings nomenclature: ball bearings, roller bearings, and plain bearings.

• Ball bearings

• Roller bearings

• Plain bearings

Thermodynamic cycles and PV TS diagrams are fundamental concepts in mechanical engineering.

• Thermodynamic cycles are processes that involve the transfer of heat and work between a system and its surroundings.

• PV TS diagrams are graphical representations of thermodynamic processes.

• Examples of thermodynamic cycles include the Carnot cycle, Rankine cycle, and Brayton cycle.

• PV TS diagrams can be used to analyze the efficiency and performance of thermodynamic systems.

• Understanding t...read more

Types of alignment include shaft alignment, coupling alignment, and belt alignment. Each process involves ensuring components are properly positioned for optimal performance.

• Shaft alignment involves aligning the shafts of rotating machinery to prevent vibration and wear.

• Coupling alignment ensures that the coupling connecting two shafts is properly aligned to prevent misalignment issues.

• Belt alignment involves aligning belts on pulleys to prevent slippage and ensure efficient ...read more

A bearing is considered failed when it shows signs of excessive wear, noise, vibration, or overheating.

• Excessive noise during operation

• Vibration felt in the equipment

• Overheating of the bearing

• Visible signs of wear or damage on the bearing surface

• Loss of lubrication leading to increased friction