Usha Martin Manufacturing Engineer Interview Questions, Process, and Tips

Iron carbon diagram shows the relationship between carbon content and properties of steel.

• The diagram helps in understanding the microstructure of steel.

• It shows the different phases of steel at different carbon concentrations.

• Low carbon steel has less than 0.3% carbon, while high carbon steel has more than 0.6% carbon.

• Medium carbon steel has a carbon content between 0.3% and 0.6%.

• The diagram also helps in determining ...read more

Pressure relief valve releases excess pressure to prevent damage, while pressure reducing valve reduces pressure to a desired level.

• Pressure relief valve is used to protect equipment from overpressure by releasing excess pressure to the atmosphere.

• Pressure reducing valve is used to reduce the pressure of a fluid to a desired level in a system.

• Pressure relief valves are typically found in systems where pressure buildup ...read more

Hydraulic piston pumps offer higher efficiency, variable flow rates, and better control compared to fixed displacement vane pumps.

• Hydraulic piston pumps have higher efficiency due to their ability to vary flow rates based on demand, reducing energy consumption.

• Piston pumps provide better control over fluid flow and pressure, making them suitable for applications requiring precise operation.

• Piston pumps are more durable...read more

No, TIA Portal is not compatible with S7-300 CPU.

• TIA Portal is designed for newer Siemens PLCs like S7-1200 and S7-1500, not S7-300.

• For S7-300 CPUs, Step 7 software should be used for programming.

• TIA Portal offers advanced features like integrated safety, motion control, and HMI design.

• S7-300 CPUs are older models with limited capabilities compared to newer PLCs.

Encoder provides digital output while resolver provides analog output.

• Encoder converts mechanical motion into digital signals, resolver converts mechanical motion into analog signals.

• Encoder is more accurate and provides higher resolution compared to resolver.

• Resolver is more robust and reliable in harsh environments due to lack of sensitive electronics.

• Examples: Encoder - optical encoder, magnetic encoder. Resolver -