22 Engineering Drawing Interview Questions and Answers

As an engineer, you will likely be asked questions about your knowledge of engineering drawings during a job interview. This is a way for employers to gauge your understanding of the subject and see if you would be a good fit for the position. In this article, we will review some common engineering drawing questions and how you should answer them.

Engineering Drawing Interview Questions and Answers

Here are 22 commonly asked Engineering Drawing interview questions and answers to prepare you for your interview:

1. What is engineering drawing?

Engineering drawing is the process of creating a technical drawing of an object or system. This drawing can be used for manufacturing, construction, or other purposes. The drawing must be accurate and clear in order to be effective.

2. Can you explain what orthographic projection is in the context of engineering drawing?

Orthographic projection is a type of drawing that is used to create two-dimensional representations of three-dimensional objects. This is done by projecting the three-dimensional object onto a two-dimensional plane. This can be helpful in engineering drawings because it can provide a more accurate representation of an object than a three-dimensional drawing.

3. What are some common uses for engineering drawings?

Engineering drawings are used for a variety of purposes, including:

– To communicate ideas and designs to others
– To create a record of a design
– To help visualize a three-dimensional object
– To create a plan for manufacturing or construction

4. What do you understand about first angle and third angle projections? Which one do you think is better? Why?

First angle projection is the most commonly used projection in Europe, while third angle projection is most popular in North America. First angle projection shows objects as they would appear if viewed from the front, while third angle projection shows objects as they would appear if viewed from the back. Third angle projection is generally considered to be the more accurate of the two, since it provides a more realistic view of an object.

5. What is a sectional view? How can it be represented on an engineering drawing?

A sectional view is a view of an object that has been cut along a plane in order to show the internal structure of the object. This type of view can be represented on an engineering drawing by using a dashed or dotted line to indicate the plane of the cut, and by using shading or hatching to indicate the different parts of the object that are being shown in the view.

6. What’s the difference between a plan and a sectional view?

A plan is a top-down view of an object, while a sectional view is a cut-away view that shows the interior of the object.

7. What’s the purpose of using hidden lines in an engineering drawing?

The purpose of using hidden lines is to show what would be hidden from view if the object being drawn were actually solid. This allows the viewer to see all of the relevant features of the object, even if they can’t actually see them in real life.

8. What is the function of centerlines in engineering drawings?

Centerlines are used to indicate the center of a circle or an arc. They are also used to indicate the center of symmetry on an object.

9. What are the three different types of dimensioning available for engineering drawings?

The three different types of dimensioning available for engineering drawings are linear, angular, and radial. Linear dimensioning is used for straight lines, angular dimensioning is used for angles, and radial dimensioning is used for circles and arcs.

10. What is true shape tolerance?

True shape tolerance is the tolerance for the actual shape of a part, as opposed to the tolerance for the size or location of the part. This is important for parts that need to fit together in a specific way, or for parts that need to be a certain shape in order to function properly.

11. What does the term “datum” mean in the context of engineering drawing?

A datum is a reference point or line used as a basis for measurements. In engineering drawings, datums are used to establish the size, shape, and position of features on a part.

12. Define the following terms:

-Auxiliary view: A view that is created by projecting the lines of an object onto a plane that is perpendicular to the object’s principal plane.

-Centerline: A line that is used to indicate the center of an object or feature.

-Dimension line: A line that is used to indicate the size or location of an object or feature.

-Extension line: A line that is used to extend the length of a dimension line.

-Leader: A line that is used to connect a note to the object or feature that the note is referring to.

-Line of sight: The line that your eye follows when looking at an object.

-Object line: A line that is used to indicate the outline of an object.

-Projection line: A line that is used to indicate the projection of an object onto a plane.

-Section line: A line that is used to indicate a cross section of an object.

13. • Extension Line

An extension line is a line that is used to show the continuation of a dimension, feature, or centerline beyond the feature or view in which it is shown.

14. • Dimension Line

A dimension line is a line on a drawing that shows the measurement of an object. The dimension line usually has arrows on each end, and a number in the middle that represents the measurement.

15. What is the significance of filters and cones in engineering drawings?

Filters and cones are used to show different views of an object in an engineering drawing. Filters are used to show different parts of an object, while cones are used to show different angles of an object.

16. What should you keep in mind when creating engineering drawings?

When creating engineering drawings, you should always keep in mind the purpose of the drawing. What is the drawing supposed to communicate? Make sure that the drawing is clear and concise, and that all important information is included. You should also pay attention to the level of detail included in the drawing – too much detail can be just as confusing as too little.

17. What are some best practices that you would follow while preparing an engineering drawing?

Some best practices for preparing an engineering drawing include ensuring that the drawing is clear and concise, using standard symbols and notation, and providing all the necessary information for the intended audience. Additionally, it is important to make sure that the drawing is properly scaled and that all dimensions are accurate.

18. What are the main components of a BOM (Bill of Materials)?

The main components of a BOM are the product name and description, the quantity of the product needed, the unit of measure, the part number, and the supplier information.

19. In your opinion, what skills are required to create good engineering drawings?

There are a few key skills that I believe are necessary for creating good engineering drawings. First, you need to have a strong understanding of the engineering principles that will be represented in the drawing. Second, you need to be able to visualize the final product and understand how all of the individual parts will fit together. Finally, you need to have a good eye for detail and be able to create drawings that are both accurate and visually appealing.

20. What are tolerances and why are they important?

Tolerances are important because they define the acceptable range of variation for a given dimension on a part. This range is important to ensure that the part will function as intended, and that it will fit with other parts in the assembly. Without tolerances, parts could be too loose or too tight, and they would not work correctly.

21. What are limit dimensions?

Limit dimensions are the maximum and minimum values for a particular dimension on a part. They are used to ensure that a part will fit properly into an assembly, and also to ensure that the part meets all the necessary tolerances.

22. How do you represent geometric shapes on an engineering drawing?

There are a few different ways to represent geometric shapes on an engineering drawing. One way is to use basic lines and shapes to create a sketch of the desired object. Another way is to use more advanced methods such as isometric or orthographic projection to create a more accurate representation of the object.