Top 10 interview questions for mechanical engineering questions for Design Engineer
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Some of the questions listed below will be useful depending on the industry your company is in during Top 10 interview questions for mechanical engineering questions for Design Engineer
Explain how hydroulic works on machine ?
Hydraulics are used to transmit power from one point to another using uncompressed fluid machines. In most cases, this increases the force applied to one end for a given effort.
What is the process flow diagram?
Commonly used in chemical and process engineering. The process flow diagram (PFD) is a diagram used to show the normal flow of equipment and plant processes.
The PFD shows the relationship between the major equipment of a plant facility and does not take into account minor details such as designation and piping details.
What is the difference between strut and ccolumn
The column is always vertical but the strut can have axial compression load in any direction. Both a strut and a column carry a compressive load.
What components do you need to increase the corrosion resistance of steel?
Chromium and nickel
What are the main components of brass?
Copper and brass The main components are copper.
Is an elastomer a polymer when it has a percentage growth rate?
Greater than 100%.
The difference between fatigue and crawling
Fatigue is the tendency to reduce the material to resist stress applied in repetitive or unstable loading conditions.
Length is a low and progressive deformation with materials with constant stress on high-temperature applications.
What is the second law of thermodynamics?
The second law of thermodynamics states that the total entropy in a closed system will always increase and can never decrease over time.
What is the process flow diagram?
A process flow diagram is a diagram commonly used to show the normal flow of plant processes and equipment in chemical and process engineering.
Explain mechanical refrigeration
Using an artificial heat exchange system Mechanical refrigeration is the process where heating is done from a selected location.
This refrigeration system can be thermoelectric, magnetic, non-cyclic, cyclic and the required refrigeration application will depend on the application.
Explain the difference between a tube and a pipe
While the pipes are always round, the tubes can come in different shapes such as rectangular, square or cylindrical.
Due to the spherical shape of the pipe the pressure drop is evenly distributed.
The outer diameter (OD) and wall thickness (WT) are used to measure the tube.
Explain what bearing is.
Bearings are precision-manufactured components that enable the machine to rotate at high speeds while reducing friction between rotating parts.
What is P&ID?
P&ID is a piping and instrumentation diagram in the processing industry. This picture shows detailed processing and piping with control equipment and instrumentation.
Explain or definition of GD&T ? what is GD&T ?
GD&T is defined as a geometric dimension and tolerance that is a system for defining and communicating engineering tolerance
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