Mechanical engineering technical interview questions pdf

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25 best mechanical engineering interview questions and answers pdf free download. 1. Mechanical Engineering Interview questions and. Click Here> "MECHANICAL ENGINEERING Multiple Choice Questions" ENGINEERING Interview Questions and Answers PDF General Basic Technical Latest MECHANICAL ENGINEERING Interview Questions and. engineering interview questions and answers pdf free download for Freshers Experienced sir pls send me technical interview question in mechanical eng pdf.

Once the reaction is calculated the direction of force of the member is made to make it tensile. What is the difference between torque and power? What is your greatest failure. What motivates you? Can u plz mail me all the mechanical and automobile interview questions in PDF format?

Interview pdf questions technical engineering mechanical

These are terminated with arrowheads. Difference between 'Thermodynamics and Heat Transfer'? Thermodynamics mainly deals with the transfer of energy in form of heat or work between systems and surroundings with other systems in form of either heat or work in equilibrium conditions.

When there is change in one state, which was in equilibrium state and starting to change in other equilibrium state, this information helps to determine heat or work interactions due to this process.

While Heat transfer deals with non equilibrium heat exchange or transfer due to temperature gradient while in thermodynamics, during thermal equilibrium No temperature gradient no heat exchange is possible. Explain in an orderly manner how the force in the member of a truss be detected using the method of joint.

The steps required to calculate the force are as follows: The reaction at the support has to be first calculated. Once the reaction is calculated the direction of force of the member is made to make it tensile. On getting the result to be negative the direction assumed is wrong and this implies the force being compressive in nature.

A joint needs to be selected whose 2 members are not known. The lami's theorem is used on the joint on which less than three forces are acting. After the above process is complete the free body diagrams of the joint needs to be made. Since the system is in equilibrium the condition of Summation of V and H must result in zero.

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After the above step the resolution of forces method needs to be used on the joint on which more than 4 forces are acting.

What is mechanism? A mechanism is an assembly of different parts which perform a complete motion and is often part of a machine.

What is annealing? It is a process of heating a material above the re-crystallization temperature and cooling after a specific time interval. This increases the hardness and strength if the material. What is ductile-brittle transition temperature? It is the temperature below which the tendency of a material to fracture increases rather than forming.

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Below this temperature the material loses its ductility. It is also called Nil Ductility Temperature. Difference between tempering and annealing Ans: Annealing is a process in which work piece is heated up to certain temperature to get desired changes in grain or micro-structure and then allowed to cool slowly in order to relieve the stresses during work treatment. While tempering is a process wherein hardness and elasticity or ductility can be regain by use of heating and cooling cycle till desired properties can be obtained.

What are the advantages of gear drive? Gear drive is useful for power transmission between two shafts, which are near to each other at most at 1m distance. In addition, it has maximum efficiency while transmitting power. It is durable compare to other such as belts chain drives etc. You can change the power to speed ratio. It increases fuel efficiency. Increases engine efficiency. Need less power input when operated manually. What is isometric drawing? It is a 3-D drawing used by draftsmen, architects etc What is a Process Flow Diagram?

25 best mechanical engineering interview questions and answers pdf fr…

It also has basic information concerning the material balance for the process. Is it the stress that, produces strain or strain produces stress? A Force applied to an object will cause a displacement. Strain is effectively a measure of this displacement change in length divided by original length. Stress is the Force applied divided by the area it is applied. What are the points in the stress strain curve for steel? Proportional limit, elastic limit or yield point, ultimate stress and stress at failure.

State Newton's three laws of Motion. The law of inertia: Every object in a state of uniform motion tends to remain in that state of motion unless an external force is applied to it. Acceleration is produced when a force acts on a mass. The greater the mass of the object being accelerated the greater the amount of force needed to accelerate the object.

For every action there is an equal and opposite reaction. State the laws of thermodynamics? Thermodynamics is a physical science which studies the interrelation between heat, work and the internal energy of any system. Thermodynamics helps study all the systems of mechanical engineering. There are three laws of thermodynamics.

First Law: Energy can be neither created nor destroyed. It can only change forms. In any process in an isolated system, the total energy remains the same.

Second Law: The second law of thermodynamics states that the entropy of any isolated system not in thermal equilibrium almost always increases. Third Law: As temperature approaches absolute zero, the entropy of a system approaches a minimum. What is Hess law? According to the Hess law the energy transfer is simply independent of the way being followed. If the reactant and the product of the whole process are the same then same amount of energy will be dissipated or absorbed.

Explain what is torque? Torque is the force that causes rotation. It is a measure of how much force is acting on an object making it rotate. What is the difference between torque and power?

While power determines the speed of a vehicle, torque determines the time in which that speed can be reached. The greater the torque figure, the faster the acceleration. Never lie about any of your strengths or weaknesses. How do you evaluate success? Questions about career goals: Mechanical engineering interview questions about what your future goals are and where you want to be in future. This helps HR managers in identifying your aims and ambitions.

Describe a time when your workload was heavy and how you handled it. Just answer honestly and you will be rewarded for sure. What is so unique about you which differentiates you from others? How you are going to help our company if we hire you?

What is your greatest weakness?

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What is your greatest strength? How would you describe yourself? How do you handle stress and pressure? Are you a team player? What irritates you about co-workers? What motivates you? What do you find are the most difficult decisions to make? What are you passionate about?

Why do you want this job? What do you know about our company? Do you have any questions for us? Tell me about your proudest achievement. Are you applying for other jobs? What have you been doing since your last job? What have you done to improve your knowledge in the last year? What can you contribute to this company? Personality based questions: Personality based mechanical engineering interview questions play a great role in identifying the positive and negative aspects of your personality.

What is your greatest fear? Do you prefer to work independently or on a team? Give some examples of teamwork. How did you handle your most difficult professional experience? How do you handle pressure? Give me an example of a time you did something wrong. These are very common and concept based questions.

Define first law of thermodynamics? Define zeroth law of thermodynamics What is difference between pressure and stress? Does hollow shaft perform better than solid shaft of same dimensions?

Tell me a time when you need to persuade people. Technical Questions: This is a bit difficult part of mechanical engineering interview questions. What's the most difficult decision you've made in the last two years and how did you come to that decision? What is your greatest failure. How did you handle it?

600 TOP MECHANICAL ENGINEERING Interview Questions and Answers PDF

What assignment was too difficult for you. Give me an example of a time that you felt you went above and beyond the call of duty at work. What irritates you about other people.

If you found out your company was doing something against the law. What are your career goals? How do you plan to achieve these goals?

What kind of goals would you have in mind if you got this job? Behavioral Interview Questions: Behavioral interview questions are questions about real life experiences and situations and how you performed in those situations.

What is the Device that converts sound energy into mechanical energy? What is knocking in engines? What is enthalpy? What is the gas constant R for air?

Difference between Performance and Efficienc HelloEngineers. What is a Newtonian fluid? What is gear ratio? What is Hess Law? Define Reynolds number. What is annealing? Is the boiler a closed system? Define torque. Why is the ice maker placed at the top of the refrigerator?

How many types of suspensions used in automobiles? What are common types of boilers in industry? What is entropy?

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How many types of gear boxes are there? Why condenser is needed in steam power plant? How does the cooling by air conditioning affect the relative humidity? What is heat treatment? What is viscosity? What continuity equation tells us? What is difference between power cycles and heat pump cycles? What is efficiency of Carnot cycle?

What is efficiency of Rankine cycle?