Veer-O-- Metals Mechanical Quality Engineer Interview Questions and Answers

The least count of a vernier caliper is the smallest measurement that can be accurately read on the scale.

• The least count is determined by the number of divisions on the main scale and the vernier scale.

• It is calculated by dividing the smallest division on the main scale by the number of divisions on the vernier scale.

• For example, if the smallest division on the main scale is 0.1 mm and the vernier scale has 10 divisio...read more

A centrifugal pump performance curve shows the relationship between flow rate and head developed by the pump.

• The curve is typically plotted with flow rate on the x-axis and head on the y-axis.

• The curve is generated by testing the pump at various flow rates and measuring the resulting head.

• The curve can be used to determine the operating point of the pump and its efficiency.

• The curve can also show the pump's maximum flo...read more

Air requirement for combustion can be calculated using stoichiometry and fuel properties.

• Determine the stoichiometric air-to-fuel ratio

• Determine the fuel properties such as heating value and molecular weight

• Calculate the mass flow rate of fuel

• Calculate the mass flow rate of air using the stoichiometric ratio

• Adjust for excess air if necessary

Coal feeder is used to supply coal to the coal pulverizer in the power generation process.

• Coal feeder regulates the amount of coal to be supplied into the coal pulverizer.

• It ensures a constant supply of coal to the pulverizer.

• The coal feeder controls the coal flow rate and ensures that there is an adequate supply of coal to maintain the required steam generation rate.

• It helps in improving the efficiency of the combusti...read more

There are various types of pumps used in mechanical engineering.

• Centrifugal pumps

• Positive displacement pumps

• Axial flow pumps

• Mixed flow pumps

• Jet pumps

Types of maintenance include corrective, preventive, predictive, and proactive maintenance.

• Corrective maintenance involves fixing a problem after it has occurred.

• Preventive maintenance involves scheduled maintenance to prevent problems from occurring.

• Predictive maintenance involves using data and analysis to predict when maintenance is needed.

• Proactive maintenance involves identifying and addressing potential issues be...read more