Mechanical engineering interview questions and answers pdf

Mechanical Engineering Interview Questions and Answers

Here you can find Mechanical Engineering interview questions with answers and explanation.

Why Mechanical Engineering?

In this section you can learn and practice Mechanical Engineering (Questions with Answers) to improve your skills in order to face the interview, competitive examination and various entrance test (CAT, GATE, GRE, MAT, Bank Exam, Railway Exam etc.) with full confidence.

Where can I get Mechanical Engineering Questions and Answers with Explanation?

IndiaBIX provides you lots of fully solved Mechanical Engineering questions and answers with explanation. Fully solved examples with detailed answer description, explanation are given and it would be easy to understand. All students, freshers can download Mechanical Engineering quiz questions with answers as PDF files and eBooks.

Where can I get Mechanical Engineering Interview Questions and Answers (objective type, multiple choice)?

Here you can find objective type Mechanical Engineering questions and answers for interview and entrance examination. Multiple choice and true or false type questions are also provided.

How to solve Mechanical Engineering problems?

You can easily solve all kind of questions based on Mechanical Engineering by practicing the exercises (including shortcut methods to solve problems) given below.

If you have a degree or diploma in mechanical engineering. And looking for a job in the mechanical field. Then this article can help you with your interview preparation. In this article, we will discuss commonly asked interview questions and answers on mechanical design. Interview questions discussed here are from the engineering curriculum. If you are aware of mechanical engineering basics, You can answer these questions.

We suggest you also read this article on frequently asked technical interview questions on manufacturing.

Here are the commonly asked interview questions and answers on mechanical design.

What are engineering tolerance?

Engineering Tolerances are allowable variations from given dimensions. In other words, it is the total amount by which a given dimension may vary without affecting product function.

Tolerance (for hole) = Hole (MMC) – Hole (LMC)

Why are Tolerance Required? 

The production of closely mating parts, without tolerances, is economically unfeasible. This will increase the rejection rate and manufacturing cost. Therefore, tolerances are used with part dimensions to facilitate manufacturer and reduce cost.

Refer to this article for more details on engineering tolerance.

What are the types of tolerance?
  1. Unilateral Tolerance
  2. Bilateral Tolerance

What do you understand by fit?

The term fit refers to the permissible clearances between mating parts. The clearance between mating parts determines the type of Fit. 

What are the different types of fits?
  1. Clearance Fit
  2. Interference Fit
  3. Transition Fit

What do you understand by Engineering Drawing?

Engineering drawing is a technical document used to transfer technical information and define requirements. In other words, it’s a graphical language that communicates ideas and information from one mind to another.

What is Section, Projection, Isometric & Detailed View?

Mechanical engineering interview questions and answers pdf

  • Projection View: The projection view represents a 3-dimensional objects in 2-dimensions while looking from one side.
  • Section View: It is used to show the interior construction of a part in an engineering drawing.
  • Isometric View: Isometric projection represents 3D objects into 2D in engineering drawings. In this three coordinate axes appear equally foreshortened and the angle between any two axes is 120 degrees.
  • Detailed View: It represents the larger view of any section of engineering drawing.

What is the symbol of 1st and 3rd angle projection?

Which projections are preferred for engineering drawings?

Following two types of projections are used :

  • First Angle Projection
  • Third Angle projection

What is the difference Between First and third angle Projection?

In 1st angle projection part lies in first quardent. Therefore object lies in between plane and observer.

Mechanical engineering interview questions and answers pdf

Whereas in third angle projection projection plane lies in between observer and object.

Mechanical engineering interview questions and answers pdf

What is the least count and how it is calculated?

It is the smallest value measured with the measuring instrument. For example, the least count for a normal scale is 1 mm whereas for a vernier scale it is 0.01 mm. Read this article for more details on Least Count. 

Least Count= Value of one main scale Division – Total Number of Vernier scale division

What is the least count for Vernier Scale, Micrometer, and normal scale?
  • Vernier Caliper Least Count = 0.01 mm (Digital) , 0.02 mm (manual)
  • Micrometer Least Count = 0.01 mm
  • Normal scale Least Count = 1 mm 

What is the factor of safety and how it is calculated?

FOS describes the load-carrying capacity of a system beyond the expected or actual loads. In other words, FOS represents: how much stronger the system is compared to the intended load.

Mechanical engineering interview questions and answers pdf

FOS is calculated considering the design load maximum value. The value of FOS is always greater than one. Click this link for more details on factor of safety in engineering.

What are types of screws?

Here are the various types of screw available in the market:

According to the type of  Screw Head

  1. Countersunk Screw
  2. Raised or oval head screw
  3. Pan Head Screw
  4. Flat Head Screw
  5. Flange Head Screw

According to Screw Drive Type

  1. Sloted
  2. Phillip 
  3. Pozi Drive
  4. Torx Head
  5. Hex Socket
  6. Triangular head
  7. Security Head Socket

According to Screw Thread Type

  1. Machine Screw
  2. Thread Forming
  3. Thread Cutting Screw

Draw Stress and Strain Curve for Ductile and Brittle Material?

Mechanical engineering interview questions and answers pdf

What is a datum plane?

A datum is a theoretical exact plane, axis, or point location that GD&T or dimensional tolerances are referenced to.

We will keep adding more questions to the mechanical design Interview questions and answers. Please add your comments or questions to mechanical design Interview questions and answers.

What are the basic interview questions for mechanical engineer?

General Mechanical Engineering Interview Questions to Ask Candidates.
Why did you choose to study mechanical engineering? ... .
Talk about your first engineering design. ... .
What is the top skill a mechanical engineer must have? ... .
What is your CAD system of choice? ... .
Name an engineering skill have you learned recently?.

What are the basic questions asked in mechanical engineering interview PDF?

Mechanical Engineering Interview Questions - Based on All Subjects PDF.
What is a heat exchanger? ... .
What are the basic components of refrigeration system? ... .
What is a manometer? ... .
What are the 3 type of stresses? ... .
What is mean by triple point in Thermodynamics? ... .
What are the methods or mode of heat transfer? ... .
What is resilience?.

What are the 10 most common interview questions and answers engineering?

20 common engineering interview questions Tell me about the most challenging engineering project you've worked on. Describe a written technical report or presentation you had to complete. Explain a time you had to use logic to solve an engineering problem. Describe a time you demonstrated leadership skills at work.

What are the technical questions asked for mechanical engineer?

Mechanical Engineering Interview Questions and Answers (Fresher & Experienced).
What is the meaning of the term Greenfield Project? ... .
Can you name the alloy of tin and lead? ... .
What is meant by pitting? ... .
Can you name the boiler that doesn't need a steam drum? ... .
What are the different types of brakes? ... .
What is knurling?.