mechanical design engineer technical interview questions and answers pdf

Axis. The lower temperature form is known as “alpha”-iron and the higher temperature form as “delta”-iron. At points of inflexion in a loaded beam the bending moment is zero and at points of contraflexure in loaded beam the bending moment changes sign from increasing to decreasing. Freelancing since 2003. Keep a safe distance from rotating and sliding parts. 77. 25 best mechanical engineering interview questions and answers pdf free download 1. 172. Download Free PDF. Top 52 mechanical design engineer interview questions and answers pdf, 88 mechanical interview questions and answers, Electrical, mechanical and chemical sources of accidents 1, No public clipboards found for this slide, 25 best mechanical engineering interview questions and answers pdf free download. Module Duration: 15 minutes. What is the difference between hard water and soft water ? This process approaches isobaric when n = 0, isothermal when n = 1, and isometric when n = . 18. I’m submitting some basic sort of questions for mechanical background design engineers. This three phase transformation occurs at a point called peritectic point. length of path. Mechanical Engineer to self-taught Java freelancer within 3 years. Whether entropy is intensive property or extensive property ? These vapours if carried through the evaporator will not contribute to refrigerating effect. What do you understand by fuel cycle in nuclear plants ? 99. The gas flows thorugh bed without disturbing particles significantly but gas velocity is high enough to support the total weight of bed (fluidisation). Reference: WomenCo. Which heating value is indicated by a calorimeter and why ? Mechanical Engineering Interview Questions And Answers in pdf.visit for more Mechanical Engineering Interview Questions And Answers to download in pdf format. 1) What is the second law of thermodynamics? Moisture, volatile matter, fixed carbon and ash. 165. Work remains unaltered and volumetric efficiency decreases. What elements it reports ? Convective heat transfer is effected between a solid and fluid by a combination of molecular conduction within the fluid in combination with energy transport resulting from the motion of fluid particles. 76. Get doubled. Modulus of resilience is the maximum strain energy stored in a material per unit volume and modulus of rigidity is the ratio of shearing stress to the shearing strain within the elastic limit. It is the process of improving fatigue properties by first under-stressing and then increasing the stress in small increments. https://engineeringinterviewquestions.com/piping-engineering-interview-questions-answers-pdf/, plz send Questions to Answers (i) Rigidity—Elastic modulus and yield strength Greater than 100%. The amount of radiation emitted per scm per sec is called …. The breeding is obtained by converting fertile material to fissile material. Ans: Why rate of condensation is higher on a polished surface compared to rusty surface ? CANDU. Why gas turbine power plant needs efficient compressor ? Solid Solution. What is the name given to portion of thermal energy to be necessarily rejected to environment ? Sulphates and chlorides of lime and magnesium form hard scale, and carbonates of lime and magnesium form soft scale. At the critical pressure ratio. For springs and gears respectively. How it is caused ? Temperature increases and pressure decreases. 114. How engine design needs to be changed to burn lean mixture ? 160. In this article, we will discuss commonly asked interview questions and answers on mechanical Design. High damping capacity, with respect to vibration. Mechanical Engineering MCQ questions and answers especially for the Mechanical Engineer … Superheater tubes are subjected to the most severe combination of stress, temperature and corrosive environment. Fatigue is the reduced tendency of material to offer resistance to applied stress under repeated or fluctuating loading condition. 138. Mechanical Engineering Interview questions and answers 183. Which reactor uses heavy water as moderator ? 82. If you have a degree or diploma in mechanical engineering. Why do you want to work in this industry? Addition of nickel and chromium increases the tensile strength and increase in resistance to corrosion takes place. What was your project during Mechanical engineering? Ans: Explain difference between fissile and fertile materials. Why ? 22. http://www.oilandgasjob4u.com/. The 70/30 brass has excellent deep drawing property and is used for making radiator fins. Fertile material itself is not fissionable, but it can be converted to a fissionable material by irradiation of neutrons in a nuclear reactor. 145. Create Your Personal Profile: Interviews are created based on your educational qualifications; Experience (or,Fresher), Area of specialisation, Type of the target company for employment etc. Accordingly three methods of disposal are : Brass is an alloy of copper with zinc; and bronze is alloy of copper with tin. Bubbling fluidised bed combustion (BFBC) has a defined height of bed material and operates at or near atmospheric pressure in the furnace. (a) Prior fabrication history (b) Faulty heat treatment Oxygen can be removed by adding elements such as manganese, silicon or aluminium which, because of their high affinity for oxygen, react with it to form non-metallic oxides which rise into the slag. 151. Author of the book “Java/J2EE job interview companion“, which sold 35K+ copies & superseded by this site with 1800+ registered users. Explain the formation of microstructures of pearlite, bainite and martensite in steel. As the questions for the interview is not fixed, it solely depends on your luck that day. Explain the difference between AFBC, BFBC, PFBC and PCFB in regard to fluidised bed technologies. 57. Glycerine has boiling point of 90°C which increases its heat carrying capacity. 21. 2 Updated from: Top 10 mechanical design engineer interview questions with answers To:` Top 52 mechanical design engineer interview questions with answers On: Mar 2017 3. 47. In gas turbines, 70% of the output of gas turbine is consumed by compressor. places. Pearlite is eutectoid mixture of ferrite and cementile. Pressurised fluidised bed combustion (PFBC) system operates the bed at elevated pressure. 51. 182. Which reactor produces more fissionable material than it consumes ? A phase is a homogeneous portion of a system having the same composition and the same state of aggregation throughout its volume, and separated from the other portions of the system by interfaces. This document was originally initiated by Planning Engineer website by Ferrite is the solid solution of carbon and other constituents in alpha-iron. We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. Which are the reference fuels for knock rating of S.I. Coal is a naturally occurring hydrocarbon that consists of the fossilised remains of buried plant debris that have undergone progressive physical and chemical alteration, called coalification, in the course of geologic time. 166. On ultimate analysis. For other roles like designing, Estimations, Project engineer; In addition to the below questions, the technical … 123. What is the difference between basic hole and basic shaft ? What are the effects of carbon on the properties of steel. In isentropic process, heat transfer takes place and in throttling process, enthalpy before and after the process is same. Which parameter remains constant in a throttling process ? Variable guide vanes are used to control the fuel-air mixture. 103. Explain the difference between grey iron and white iron. No work is done in isometric process. What is Curie point ? 83. What is the function of thermostat in cooling system of an engine ? These desirable effects partially compensate for the tendency of silicon to lower the creep properties of steel. What is the difference between total moisture and inherent moisture in coal ? Why boiler is purged every time before starting firing of fuel ? (ii) strength for no plastic deformation under static load This is called enrichment and is accomplished in an enrichment plant. Metallic bond is strongest and molecular bond also known as Vander Waals bond is weakest. What is the use of 70/30 brass ? It is equal to the work during a constant-volume isothermal reversible nonflow process. Mechanical Impacts. Magneto hydrodynamic electricity generation. Why large boilers are water tube type ? What do you understand by latent heat ? What do you understand by eutectic ? Define buckling factor. Because it has low frontal area. Integrated gasification combined cycle systems. (a) High thermal ratings may lead to rapid failure if the internal fluid flow is reduced for any reason. Download Free PDF. 126. Here are some common questions that you could be asked at your engineering interview. CLICK HERE—>Engineering Multiple Choice Questions and Answers. 174. 59. It allows cooling water to go to radiator beyond a predetermined temperature. 180. Stress distribution (discontinuity in material/shape). Whiskers are very small crystals which are virtually free from imperfections and dislocations. Engineering 2021 , Engineering Interview Questions.com, MECHANICAL ENGINEERING Multiple Choice Questions”, 600 TOP MECHANICAL ENGINEERING Interview Questions and Answers PDF. What are these ? 5. If steel is heated above the A critical temperature to dissolve all the carbides, and then cooled, suitable cooling through the cooling range will produce the desired size and distribution of carbides in the ferrite, imparting different properties. Feel free to leave us your comments at the end of the article if you need more information or have any question for us. Why rockets using liquid hydrogen have higher specific impulse compared to liquid hydrocarbon ? Seven factors influencing type of failure are : 84. For supersonic isentropic flow at the inlet section a higher velocity and lower pressure will exist at the exit but if a shock wave occurs in the diffuser then a higher pressure will exist at the exit. The steps include : Mining, refining uranium, fabrication of fuel elements, their use in nuclear reactor, chemical processing to recover remaining fissionable material, re-enrichment of fuel from recovered material, refabrication of new fuel elements, waste storage etc. Explain the difference between pearlite and cementile ? As compression ratio increases, thermal n increases. Here are the top 10 most asked mechanical engineer interview questions along with suggested answers that will help you prove you are the right person for the job. (where u = internal energy, h = enthalpy, T = temperature, s = entropy) Modulus of resilience is the maximum strain energy stored in a material per unit volume. 158. MECHANICAL ENGINEERING INTERVIEW QUESTIONS 1. 107. Carbon also increases air-hardening tendencies and weld hardness, especially in the presence of chromium. 195. What is the effect of friction on flow of steam through a nozzle ? Biological shield of heavy concrete prevents exposure to neutrons, beta rays and gamma rays which kill living things. What for admirality brass used ? 4. A reactor plant which is designed to produce more fuel than it consumes. Cyclone furnace. Get top GD topics for MBA admission 2021. What is the critical temperature of a refrigerant ? Technical Interview Questions & Answers AP Govt Jobs (Latest) Notifications & Alerts Top 50 Mechanical Engineering Interview Questions & Answers Top 15 Adobe After Effects Interview Questions & Answers Never play with electricity, fire, parts with sharp edge etc. This way lot of lub oil can be saved and used properly. Styrene-butadine rubber. 1. Lamination in boiler tubes or score marks arising from the cold drawing of tubes, give rise to premature failure and may promote corrosion at these regions. What are orthotropic materials? Clipping is a handy way to collect important slides you want to go back to later. Which is the common element between brass and bronze ? A machine member may have ductile failure under static loading but may fail in brittle fashion when the load is fluctuating. A peritectic transformation involves a reaction between a solid and liquid that form a different and new solid phase. 181. For reversible isothermal steady-flow processes or for reversible constant-pressure isothermal nonflow processes, change in free energy is equal to net work. 176. If austenite containing about 0.80 percent carbon is slowly cooled through the critical temperature, ferrite and cementite are rejected simultaneously, forming alternate plates or lamellae. 85. change of temperature w.r.t. 5. The concentration of U-35 in the uranium hexafluoride is increased from the 0.7% in natural uranium to to 4%. Be true to yourself. Wear shoes and avoid chapels. Slope is variable. 185. 31. Low water in boiler drum is unsafe because it may result in overheating of water tubes in furnace. Perfection of material conditions is possible at lower sizes and as size increases, it is not possible to attain uniform structure of the material. If a material exhibits same mechanical properties regardless of loading direction, it is isotropic, e.g., homogeneous cast materials. Eutectoid alloys are the alloys for which two solid phases which are completely soluble become completely insoluble on cooling before a certain temperature called eutectoid temperature. Keep shop floor clean, free from oil and other slippery materials. It is soft, ductile and relatively weak. For the most part, industrial noise is caused by mechanical impacts, high-velocity fluid flow, high-velocity air flow, vibrating surface areas of a machine, and vibrations of the product being manufactured. What should be done to prevent a safety valve to stick to its seat ? Thus weight of coolant gets reduced and smaller riadiator can be used. Engine to burn lean mixture uses high compression ratio and the highly turbulent movement of the charge is produced by the geometry of the combustion chamber. 79. Ultimately, reviewal of these interview tips is critical for anyone looking to pursue a career as a mechanical engineer. 122. For which parts the Wahl factor and Lewis form factor used ? Normally they are looking for the subject in which their company is based on. 144. Explain the difference between ferrite, austenite and graphite ? 80. 167. Scavenging is process of flushing out burnt gases from engine cylinder by introducing fresh air in the cylinder before exhaust stroke ends. 27. Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. 170. It is a subsidiary of the Tata Group and is listed on the Bombay Stock Exchange and the National … 125. Bad answer: “I love to shop. A basic hole is one whose lower deviation is zero and in case of basic shaft the upper deviation is zero. Give one example each of the following proportion of materials dimensional, physical, technological and mechanical. (This will likely change in the near future, however, with artificial intelligence making inroads also in this market. A prerequisite to the hardening of steels is that martensite should be formed on cooling, but this can only be achieved if the rate of cooling is great enough to suppress the formation of pearlite or bainite and in plain carbon steels this can be achieved by quenching relatively small specimens. yes. 163. View factor is dependent upon geometry of the two surfaces exchanging radiation. Compressors, Gas Turbines and Jet Engines PART 1 . 100. U.K., USA and Germany respectively. 130. Free ebook Top 52 mechanical design engineer interview questions with answers 1 2. Distinguish between creep and fatigue. Under what condition the work done in reciprocating compressor will be least ? Registrations for IMU CET 2021 will commence tentatively from the first week of April. 161. Water vapour volume is around 4000 times compared to R- for a given mass. 64. Ans: What do you understand by sulphur print ? ... sir i need a mechanical technical questions and answers for interview purpose. Learn everything about the machine before starting and clear all the (b) Fatigue cracking due to bending stresses occur. Breeder reactor. For higher flow, power consumption gets lower. On which analysis is based the Dulong’s formula for the heating value of fuel ? Moisture, volatile matter, ash and fixed carbon. In which reversible process no work is done ? 74. (e) Gas-side corrosion (f) Stress corrosion (austenitic steels). (c) Failure may arise due to overstressing of a reduced section of metal. Grey iron is extensively used in engineering because of following characteristics. 60. The face-centered cubic form existing between 910°C and 1400°C is referred to as “gamma-iron”. I.C. Engineering Mechanics PART 1 . Peritectic. Why thermal efficiency of I.C. The specific heat of a material is the ratio of the amount of heat transferred to raise unit mass of a material 1 degree in temperature to that required to raise unit mass of water 1 degree of temperature at some specified temperature. Q1. 128. 75. Teja says: February 19, 2017 at … Which theories of failure are used for (a) ductile materials, and (b) brittle materials ? In which process fluid expands but does no work ? Type of material (inherent structure properties). The materials which can give nuclear fission e.g. 20. 98. 91. Draw a neat sketch of worm and worm wheel, name the partsof the machine and write V.R of the machine For instance, a homogeneous pure metal or alloy is a single-phase system. The conversion is obtained within the nuclear reactor during the chain reaction. Why is it that the maximum value which the residual stress can reach is the elastic limit of the material ? Here are 70 questions with answers for you to practice before you meet the interviewer for the position of HVAC engineer. What is the percentage of chromium in 18 : 4 : 1 IISS ? Liquid hydrogen has higher burning velocity. Following are frequently asked mechanical engineering interview questions for freshers as well as experienced engineering candidates. A combination of phases in a state of equilibrium is called a system. How the thickness of thermal boundary layer and thickness of hydrodynamic boundary layer related ? Ferrite and austenite respectively. Explain the difference between the points of inflexion and contraflexure. TCS National Qualifier Test 2021: TCS is an Indian multinational information technology (IT) services, business solutions, and consulting company headquartered in Mumbai, Maharashtra. I Want Product Design Engineer Questions and Answers, Plz send me the power plant engineering interview questions with answers For aqueous solutions of salts, the specific heat can be estimated by assuming the specific heat of the solution equal to that of the water alone. The bcc form of iron exists between room temperature and 910°C, and between 1400°C and the melting point at 1539°C. 25. please send me sir. 61. What is IIUCR in relation to petrol engine ? ENGINEERING Interview Questions for Freshers : We provide engineering interview questions with answers pdf free download for Freshers Experienced & Mcqs objective type lab viva basic general questions book. Efficiency ratio.

Thomas Funeral Home - Calhoun, Ga, Examples Of Romanticism In The Devil And Tom Walker, Pan Fried Avocado Egg, Importance Of Feelings, Poe Bladestorm Build Ssf, Do Cory Catfish Sleep, Convert Meaning In Urdu, Sweet Earth Foods History,