Assistant Design Engineer Interview Preparation Guide
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Assistant Design Engineer Frequently Asked Questions in various Assistant Design Engineer job interviews by interviewer. The set of questions are here to ensures that you offer a perfect answer posed to you. So get preparation for your new job interview

66 Assistant Design Engineer Questions and Answers:

1 :: Tell us what do you enjoy most about working as a Design Engineer?

Just like the other questions on this page, when answering this question, it’s best to be honest – especially because the answer you give to this one might end up influencing your role, should you get the job! So, you need to think carefully – and not rush into an answer!

With this one, if you can, try and name a few different elements and try to pick things which will make you stand out for all the right reasons. For example, you can design appropriately according the clients requirement, new ideas to make the design more effective and easy to read. You enjoy the design work by implementing new techniques.

2 :: What is Ductility?

It is the property of the material enabling it to be drawn into wire, with the application of tensile force. It must be both strong and plastic. It is usually measured in terms of percentage elongation and reduction in area, (e.g.) Ni, Al, and Cu.

3 :: Tell me what are the factors affecting endurance strength?

Factors affecting endurance strength are

☛ Load ii. Surface finish
☛ Size
☛ Temperature
☛ Impact
☛ Reliability

4 :: What is Griffith theory. (Or) State the condition for crack growth?

A crack can propagate if the energy release rate of crack is greater than crack resistance.

5 :: Tell me the factors involved in arriving at factor of safety?

The factors involved in arriving at factor of safety are:

☛ Material properties
☛ Nature of loads
☛ Presence of localized stresses
☛ Mode of failures

6 :: Tell us what are the factors that affect notch sensitivity?

The factors effecting notch sensitivity are:

☛ Material
☛ Notch radius
☛ Size of component
☛ Type of loading
☛ Grain Structure

7 :: Explain me the bending equation?

The bending moment equation is, M/I = f/y= E/R,


M – Bending moment (M is in N-mm)

I - Moment of inertia about centroidal axis (I is in mm⁴)

f – Bending Stress (f is in N/mm²)

y - Distance from neutral axis (y is in mm)

E - Young’s modulus (E is in N/mm²)

R - Radius of curvature (R is in mm)

8 :: Tell us what safety precautions should be observed while working in the workshop?

☛ 1) Keep shop floor clean, free from oil and other slippery materials.
☛ 2) Wear proper dress and avoid loose clothing and loose hair.
☛ 3) Wear shoes and avoid chapels.
☛ 4) Avoid playing, loose talk and funning inside the shop floor.
☛ 5) Keep good housekeeping and put all unnecessary items and rejected items in scrap box.
☛ 6) Learn everything about the machine before starting and clear all the doubts.
☛ 7) Keep a safe distance from rotating and sliding parts.
☛ 8) Never store inflammable materials inside or around the shop.
☛ 9) Never play with electricity, fire, parts with sharp edge etc.
☛ 10) Keep fire buckets and extinguishers ready for use.

9 :: Explain me what is a Vernier Scale?

This is used to measure very small unit with greater accuracy. It consists of a primary scale and a vernier scale.Vernier scale slides on the primary scale.

10 :: Tell me what is a lettering?

Lettering is the presentation of information data on a drawing.