mechanical engineering technical interview

6. Copyright 2020 , Engineering Interview Questions.com, 300+ TOP MECHANICAL ENGINEERING Interview Questions PDF. Make a note of an example where you made the ordinary more extraordinary; talk about avoiding boredom by taking regular technical components and reassembling them in a novel and out-of-the-box manner. Answer: Balanced draft refers to combination of forced and induced draft fans controlled to keep the furnace under slightly vacuum condition. 49. Lower is approach temperature, higher is steam production in economiser due to flashing which needs to be avoided for long life of tubes. What is boundary layer thickness in turbulent boundary layer ? Sachin is a B-TECH graduate in Mechanical Engineering from a reputed Engineering college. 44. 76. Define fin efficiency for extended heat transfer surfaces. 84. Understandably, shallow and lacklustre responses such as ‘because it pays well’ or ‘because I need a job’ won’t get you hired. Answer: Thermal n of both will be same. Answer: Condensing pressure of R22 at any given temperature is higher than that of R12. Answer: Fin efficiency is defined as the ratio of the mean temperature difference from surface to fluid divided by the temperature difference from fin to fluid at the base or root of the fin. Exploring a candidate's history with engineering can reveal their passion for the field, even if they were using household items as a child to build something small. Out of 2 stroke SI engine, 4 stroke SI engine, and 4 stroke CI engine, how the brake thermal efficiency behaves if these are to be used for road vehicles ? An illustration of the latter reply could be a brief description of a childhood design you created – one that initiated your love of the field and fostered a desire to pursue a career in mechanical engineering as an adult. 25. For a given set of operating pressure limits of a Rankine cycle, for which cycle the efficiency will be highest ? 37. Answer: Because the mean temperature of heat addition is higher for superheat cycle. It enables vaporised NH to react with NO* in exhaust gas to form N2 and H20. Indeed, it is a prime opportunity to set yourself ahead of your competition. Answer: It is the ratio of heat change from feed water to steam and the heat of vaporization of steam at atmospheric pressure. Pyrheliometer is used to measure beam intensity by collimating the radiation. The first question helps the i… Interview questions discussed here are from the engineering curriculum. 29. gowtham says: January 16, 2017 at 8:03 pm sir pls send me technical interview question in mechanical eng pdf. Answer: NO* in gas turbines is controlled by (a) injecting water/steam into combustor, (6) using selective catalytic redaction (SCR) and non-catalytic reduction system (NRS), and (c) better combustor design. It will be great if you could send me the mechanical engineering interview questions pdf file to this e-mail address . Answer: Jet pumps are easy to maintain and can be used to transport gases, liquids and mixtures of both. 17 Electro-mechanical Technician Interview Questions. What do you understand by effectiveness of heat exchanger ? Why alcohol can’t be used in diesel engine ? Mechanical engineering is the subject that applies engineering, physics, and material science principles to design, analyse, manufacture and maintain mechanical systems. Answer: Water injection results in higher mass flow rate through turbine section and as rich electrical output is increased. What is radiosity ? Answer: —Increased CO at lower loads Answer: It remains constant. What will be the coefficient of performance of this system ? Answer: As pressure is increased, the dryness fraction of steam lowers on isentropic expansion. What is meant by balanced draft in boiler ? Mechanical Engineering Interview questions and answers 1. Answer: When convection heat transfer occurs between a solid body and a fluid and where circulation of fluid is caused and controlled by some mechanical. He also likes to write articles related to the mechanical engineering field and tries to motivate other mechanical engineering students by his innovative project ideas, design, models and videos. Answer: Emissivity of a body is the ratio of the emitted radiant energy flux density to the emitted radiant energy flux density of a blackbody at the same temperature. Answer: When the emissivity of material does not change with temperature, it is called gray body. How the efficiency of heat recovery in IIRSG increased ? However, this insightful guide is sure to aid you in better understanding what to expect in your upcoming conversations. Further steam needs more space due to higher specific volume. What is the nature of curve in case of transfer of heat by conduction through a cylindrical wall and through a spherical wall ? Indeed, by the end of this article, you’ll hopefully know what to say when answering some of the most common questions that are likely to come up in a mechanical engineer interview – and, as a result, bag the job of your dreams. This is perhaps one of the hardest interview questions to answer, as it involves a need to provide your interviewer with an example of a time when your work was less than satisfactory. Instead of offering a response such as this, make some adjustments. It is a branch of engineering that is related to industrial application of mechanics … 65. Answer: 4 stroke CI engine has highest brake thermal efficiency followed by 4 stroke SI engine and the 2 stroke SI has lowest brake thermal efficiency. However, working as a mechanical engineer means that you can’t afford to let your mind wander from the tasks at hand; indeed, the design of power-producing machines requires the utmost attention to detail. NO.,, reduction in gas turbines is challenge to meet environmental regulations. Answer: Pyrometer measures temperature by radiation principle. We suggest you to also read this article on frequently asked technical interview questions on manufacturing. If you are aware of mechanical engineering basics, You can answer these questions. Recruiters may ask questions on any topics. Under what condition a nuclear reaction is said to be critical ? 36. When answering this question, reiterate not only your basic mechanical engineering skills but also your more niche proficiencies that other candidates may not have. At what pressure and temperature the density of water and steam is same ? As such, it is an important question to become aware of. 22. Which refrigerant is used for ice plant and transport refrigeration ? By asking interviewees to provide a verbal sample of their early work, hiring managers are able to better understand the candidate’s history in the field. 12. What is the difference between pyrometer, pyranometer and pyrheliometer. Software engineering requires specialized knowledge and skills. MECHANICAL ENGINEERING Interview Questions PDF. A gas having a negative Joule-Thompson coefficient, when throttled, will become …. 68. What is your favourite subject in Mechanical engineering? What do you understand by the term coagulation ? What are the advantages and drawbacks of centrifugal compressor and axial flow compressors in gas turbines? In one design combustion chamber is designed into a series of small, lean premixed chambers. Answer: While work can be completely con¬verted to heat, heat can’t be converted fully to work. What is selective catalytic reduction (SCR) method for NO* control in gas turbines ? As pressure of steam is increased, why reheating is necessary? Answer: It refers to amount of unevaporated moisture in steam. This is another popular technical question to give your interviewer may ask to get a better understanding of your knowledge of the field. A refrigerator and a heat pump are working on the reversed Carnot cycle between the same temperature limits. Due to the dependability and proficiency of these devices (in comparison to an internal combustion engine), a turboprop engine is extremely desirable for more modern aircraft designs. ashishanshu762@gmail.com. 77. What is gear ratio? Civil engineering firms that are hiring new colleagues will often … Answer: These characteristics affect SI engines in cold starting, icing of carburettor and dilution in crankcase respectively. 47. Answer: SCR is a post combustion method in which a catalyst is installed in flue gas where temperature could be of the order of 15-400°C. How is dryness fraction of steam measured ? 48. A tension member of certain diameter is to be replaced by a square bar of the same material. This is an important question to ask any candidate, whether they’re an aspiring mechanical engineer freshly out of school or one who is already well established. When interviewing in the tech industry, expect to be asked questions about your training and certifications, as well as behavioral questions, situational questions, questions about your knowledge of tech tools and design, and questions about your work habits and processes. Materials which absorb neutrons and produce fissionable material are called ? Answer: He should incline the rope with horizontal at angle of friction between floor and block. 34. —less susceptible to the effects of deposits left on flow path. Mechanical Engineering Interview Questions with Answers, Interview Questions with Answers on Mechanical Design, Strength of Materials, Kinematics of Machine, Manufacturing Process, Engineering Mechanics & Mechanical Vibrations. Answer: Fast breeder reactor. 80. Job Interviews Careers Engineering Electro-mechanical Technician. 79. What do you like about teamwork? How did you get along with your last supervisor? Approach point is the temperature difference between the temperature of steam corre¬sponding to drum operating pressure and water temperature leaving the economiser. 9. MECHANICAL ENGINEERING Interview Questions PDF :-1. Measure to minimise formation of NOx inhibit complete combustion and this results in formation of CO and voltatile organic compound (VOCs). Do not worry if you tell other than the subject of company. Its drawback is sophisticated design and appreciable length due to large number of stages, narrow operating range for good efficiency, higher weight and cost, high starting power. mechanical engineering interview it''s very useful for me thank you!! engines ? At the core of this question, the interviewer wants to know that you’re an accountable individual who can be upfront about your mistakes, as opposed to making excuses for them. What do you understand by microbial desulphurisation ? What measures are taken in this regard ? What kind of nuclear fuel is used in Narora, Kalapakkam and Rana Pratap Sagar nuclear plants ? 3. Answer: Ambient conditions, inlet/exhaust pressure losses, fuels, and water/steam injection flow rates’influence the performance of gas turbines. What is burn up in connection with fissionable material ? Answer: Smaller. —Increased fuel consumption What is gray body ? Answer: Brayton cycle, and Bell-Coleman cycle. When answering a supposition such as this, you have the opportunity to discuss the methods in which you self-motivate, encourage those on your team and think innovatively about the tasks that you are completing. Answer: It lowers the flame and gas temperatures. Why steam is in open space and water inside tube in condensers used in power plants ? Answer: Speed. Be clear that you understand the role itself and the tasks that it would entail, noting that these are all aspects of the job that you are passionate about. To get a little bit more technical, Mechanical Engineering is the discipline involved with the application of engineering mechanics and principles to design, analyze, build and maintain mechanical … 43. 73. Answer: Velocity of fluid flow at solid surface is zero and it increases rapidly as distance from solid surface becomes greater, reaches a maximum value and then decreases to that of undisturbed fluid. 96. Currently, he is working in the sheet metal industry as a designer. Reply. This bacteria can remove 90-98% of pyritic sulphur from coal. Some common questions that interviewers ask mechanical engineersinclude: 1. 30. Though one of the more basic job interview questions, this is one that nearly every interviewer will ask. The product of efficiency of heat engine and COP of refrigeration cycle will be ? Side of square compared to diameter will be ? (iii) Higher the turbine firing temperature, lower the heat rate. Answer: Natural uranium. Answer: Fuel NO* is formed by the gas phase oxidation of char nitrogen (CN~ compounds) in the fuel and thermal NO* is formed by high temperature reaction between the nitrogen and oxygen in the combustion air. A final technical question we will make a note of, one that could arise during an interview, is a postulation regarding the mechanics of hydraulics. What are these ? 52. 15. Answer: Velocity, kinetic energy and momentum. Answer: No. Highlight your understanding of the field on a personal level, perhaps touching on points about the importance of mechanical engineering and your desire to better society through the designs you would be creating. Thiobalilius ferroxidans is the most widely used micro organism studied for coal desulphurisation. 45. this questions are use to all engg students you did great job sir.please send me pdf format to my mail. As with many careers in fields that are constantly evolving, it is important for mechanical engineers to continuously maintain an updated knowledge of current trends and necessary skills. What is equivalent evaporation in a boiler plant ? Answer: Effectiveness of heat exchanger = actual heat transfer/maximum possible heat transfer. Answer: The velocity of steam decreases in successive stages and to accommodate same flow per unit time, the area of flow must increase. Answer: Wilson line represents saturation line on the Mollier diagram. These answers include strong analytical skills, problem-solving skills, math skills, creative design skills, or strong knowledge of engineering fundamentals. What is the process which produces fissionable material from a fertile material ? However it increases gas turbine heat rate because of the additional heat consumption required to vaporise the water. Continuing education is the perfect method to become more adept in this area, and it is something that you should be discussing during an interview. What was the first thing you ever designed? What was your very first design?’ By asking interviewees to provide a verbal sample of their early … 3. Answer: V2O5 supported by titanium or a mixture of titanium and silica is generally used as catalyst. By adding certain chemicals (coagulants), gelatinous substances are formed which cause small particles to coalesce into groups large enough to be checked during filtering. Answer: It will decrease. Answer: Percentage of U25 in natural uranium is increased by a process called uranium enrichment. What Are The Primary Principles Upon Which Rcm Is Based? Answer: hotter. Answer: 10, 12.5 and 16 respectively. Technical Interview Evaluation Form: Excel; How the Form Works: Technical Interview Evaluation Form. 23. CareerAddict is a registered trademark of DeltaQuest Media. 63. Answer: Compressibility effects usually become significant at gas flow velocities greater than 0.5 times the velocity of sound. What is the name given to process of removing non condensables in steam and other vapour cycles ? Indeed, a mechanical engineer’s objective is to create and design power-producing machines. An Elite CafeMedia Publisher - Update Privacy Preferences, you would like to move up to a more prominent position (after showcasing your talents and worth to the company), you see yourself further developing your skills as a mechanical engineer thanks to both your coworkers and through avenues of continuing education. Answer: Diagram efficiency = Change in K.E./kg / Energy suppled/kg. What is meant by quality of steam ? How COP of refrigerator and heat pump related ? How steam/water injection in combustion zone lowers NOx formation. Which parameters influence the performance of gas turbines ? Best Cities ... but I was contacted for a 2nd technical interview. It’s also a tricky one, as there are three different laws of thermodynamics. 14. 61. All rights reserved. Does the area on PV diagram for a process represent work for both reversible and non-reversible process ? Answer: When sum of the resolved parts in any two perpendicular directions is zero. Put most simply, hydraulic systems utilise pressurised fluids to power an engine, exerting force against a piston on the alternate side of a container. Stirling cycle with regenerative arrangement and Carnot cycle operate within same temperature limits. 82. What other questions might a hiring manager ask a potential candidate? 42. Answer: Burn up corresponds to destruction of fissionable material when it undergoes nuclear fission. Some of the best mechanical engineers have been creating things their entire lives. A firm seeking new candidates to hire will be interested in why they want the job. Home » MECHANICAL ENGINEERING Interview Questions PDF » 300+ TOP MECHANICAL ENGINEERING Interview Questions PDF. Most Asked Technical Basic CIVIL | Mechanical | CSE | EEE | ECE | IT | Chemical | Medical MBBS Jobs Online Quiz Tests for Freshers Experienced. Answer: In isentropic process, heat transfer takes place and in throttling process, enthalpy before and after the process is same. Answer: It will increase. ©2020 DeltaQuest Media. If you need more job interview materials, you can reference them at the end of this post. 18. engine can be reduced by increasing ? If pinch point is lower, total heat recovered in HRSG in higher and steam generation is also high. What is the latent heat of evaporation at critical point ? (i) Lower the gas turbine inlet temperature, lower the heat rate. As such, it’s important to prepare for them, even if they don’t come up. 27. 88. Answer: In laminar flow, boundary layer extends right from surface upto centre. Question 20. 28. Be sure to recap the personality skills that would make you a key asset to the team you would be working with — factors such as strong teamworking abilities, easily taking direction while also being able to offer your own insights, and the desire to take on personal responsibility. 87. Community Answers "It was good and I have learned so many things in his supervision." A steam pipe is to be insulated by two different insulating materials of same thickness. How this percentage is increased ? Answer: When there is relative motion between them. What arrangement is preferred ? Answer: – 2°C. If temperature of A Carnot cycle is to be designed to attain efficiency of 0.75. 10. Let us know your thoughts in the comments section below! 62. "When interviewing candidates for the role of mechanical engineer, employers look for candidates who are enthusiastic to create innovative designs, analyses, and methods of production for mechanical … high temperature reservoir is 727°C, then low temperature reservoir will have to be maintained at______°C ? Near the surface of solid, there is laminar flow which changes to buffer zone and finally turbulent region. While you tell of your mistake, remain humble and note that you appreciate the lesson that you learned as a result of the mishap. Answer: Zero. What is the name given to combined process of cooling and humidifying ? Out of constant volume and constant pressure line, which line on T-S diagram has higher slope ? Reply. 26. 57. And, to land your dream job offer you need to stand out from the rest of the crowd and make the best impression. 83. Interview questions discussed here are from the engineering curriculum. (iv) Lower the exhaust temperature, lower the heat rate. (adsbygoogle = window.adsbygoogle || []).push({}); Engineering interview questions,Mcqs,Objective Questions,Class Lecture Notes,Seminor topics,Lab Viva Pdf PPT Doc Book free download. 100. Variable guide vanes are used to control the fuel-air mixture. 94. Required fields are marked *. Vaporised NH is injected into exhaust gases before it passes through the catalyst bed. Answer: It is the amount of water that would be evaporated from water at 100°C to steam at 100°C by the same amount of heat which was actually absorbed by water and steam under operating conditions. 86. 16 SpaceX Mechanical Engineer interview questions and 14 interview reviews. Answer: By using throttling calorimeter. Which cycle is used in vapour compression and gas cycle refrigerantion system ? 92. However, despite its popular use, many potential job candidates fail to answer the query adequately – indeed, many people tend to reply with ‘Working here, in the position that I’m applying for’. Though only a sample of the personal and technical enquiries an interviewer might pose to you, they are some of the most popular interview questions you may be asked. Oxides of Ti and Mo are often incorporated as moderators. Ans: Normally they are looking for the subject in which their company is based on. We suggest you also read this article on frequently asked technical interview questions to mechanical freshers. Answer: Sulphur from coal can be removed by physical, chemical and microbial meAnswer: Microbial means has a number of advantages over other methods. Axial flow compressor is more popular due to high delivery capacity, high compression ratio due to many stages, high efficiency (85-90%), low cross sectional area. Answer: Excess air is required to ensure adequate mixing of fuel and air, avoid smoke, minimize slagging in coal burning, and to ensure maximum steam output. Answer: Constant volume. The distance between the solid surface and point where boundary layer velocity equals undisturbed flow (edge) is called boundary layer thickness. 24. 74. Answer: It is the rate at which radiation leaves a surface. What catalyst is used in SCR process for control of NOx in gas turbines ? Answer: Independent of wavelength. 39. 66. Karna Lad 12-9-2019 10:39 PM Mechanical REALLY HELPFUL chetia 07-26-2017 05:35 AM mechanical engineering aptitude questions and answers give me some important test questions asked in aptitude exam vivek mangaluru 07-13-2017 12:07 PM When the compressibility effects become significant in heat transfer problems in high speed flow ? Therefore, steam has to be reheated after partial expansion so that dryness fraction remains within limits after expansion. It’s also important to mention that, going forward, you learned to be more aware, more conscientious, and so forth. Mechanical Engineering this answer is very nice. 93. ? Leakage of Freon-12 refrigerant can not be easly detected, still it is preferred for air-conditioning. Luckily for you, right now we experience a deficit of mechanical engineers, and companies literally fight for skilled job candidates. There’s no doubt about it: preparing for a job interview can be a stressful endeavour if you’re not adequately primed for the task. Mechanical Engineering Interview Questions With Answers – HR & Technical Basic Mechanical Questions – Mechanical engineering deals with all things that are used to convert one form of energy into another, when put in layman terms. 50. Answer: Catalytic oxidation, a post combustion treatment at 470°-600° temperature is used to reduce emission of CO and VOCs. To slide a heavy block over a rough floor by a rope with minimum force by a man, at what angle the rope should be inclined with the level of floor ? One thought on “ Some Technical Aptitude and Interview questions for Mech. Name pressure compounded and velocity compounded turbine. Its optimum value is 8-10°C. 2. Be true to yourself. What is boundary layer thickness in free convection case ? Pyranometer is used to measure total hemispherical solar radiation. Following the typical opening interview questions, candidates can expect to be met with questions that delve deeper into their history and interest in mechanical engineering. Answer: I section. Ultimately, reviewal of these interview tips is critical for anyone looking to pursue a career as a mechanical engineer. Should this question be posed during an interview, the answer to give is quite simple. This is a common interview question, not just when interviewing for the position of a mechanical engineer, but for a plethora of other career paths, too. Drawback is larger cross-section area for same capacity and its unsuitability for high pressure ratios. What is the reason for this ? 67. Which type of plant will you recommend for remote location if power is required in six to twelve months time ? Answer: Ammonia and CO2 respectively. Depending on the company, the recruiters can ask about any subject they wish to. Landing a job in a core company is a dream for almost every mechanical engineer. 5. Why excess air is required to burn a fuel completely ? A jet engine is used to drive a vehicle. litamravi@gmail.com, Your email address will not be published. Answer: Water/steam injection is not allowed beyond 5% of compressor flow to avoid flame out in combustion and to minimise operating cost and impact on inspection intervals. When interviewing candidates for the position of Mechanical Engineer, look for individuals who have highly creative, analytical minds. Answer: doubled. 4. Answer: It will be maximum when vehicle speed approaches the relative velocity of gases at nozzle exit. Answer: Leakage of Freon-12 can’t attain total concentration but it has all desirable characteristics as good refrigerant. Emphasise that you still wish to be working in the field of engineering, even at the firm in which you are applying to, but add in these key elements: As with many different jobs, the repetition of basic daily tasks can become monotonous and, as a result, boring. 31. 10. Answer: Energy required to cause failure. A body is dropped from a certain height. 85. When its mechanical efficiency will be maximum ? What is factor of evaporation ? Ambient berometric pressure 1.0 kg/cm2. If a nuclear reactor generates more fuel that it consumes, it is called ______ ? Tell me about your ability to work under pressure? Emission of S02 is the cause of acid rain and is responsible for severe environmental damage. What happens to its yield strength ? Water/steam injection in gas turbines increases power output. RCM is defined by the technical standard SAE JA1011, as ‘‘an engineering framework that enables the definition of a complete maintenance regime. What does the area under the stress-strain curve represent ? However lowering pinch point requires more heat exchange surface and increase in cost and draft side loss. Under what condition a number of forces acting at a point are in equilibrium ? What causes rotation of steam turbine rotor ? 89. 17. What would be the order of boundary layer in pipe flow (i) laminar (ii) transition, and (iii) fully turbulent ? Why ? In this post, you can reference some of the most common interview questions for a mechanical technician interview along with appropriate answer samples. —Good efficiency over a wide range of operation. It regards maintenance as the means to maintain the functions a user may require of machinery in a defined operating context’’. Answer: Material with lower thermal conductivity should be used for inner layer and material with higher thermal conductivity for the outer layer. 41. What is the difference between pinch point and approach point in connection with heat recovery steam generator (IIRSG) ? 56. —more reliable in operation under all operating condition. 64. Or, alternatively – What do you look forward … 98. Answer: Humidification in summer and dehumidification in winter. Civil Engineer Interview Questions. What is diagram efficiency in steam turbine ? —Loss of extensively treated water Answer: Excess air is required to ensure adequate mixing of fuel and air, avoid smoke, minimize slagging in coal burning, and to ensure maximum steam output. but write some engine related question. 1. Further improvement is possible by heating make up water/condensate in HRSG, generating low pressure saturated steam or dearation steam in HRSG using a low pressure evaporator, preheating the make up water in a heat exchanger before it enters deaerator, and circulate more water than necessary through the economiser and recirculate excess to the deaerator. By lowering the flame and gas temperatures the company, the dryness fraction steam... Heat recovered in HRSG in higher mass flow rate through turbine section and assures stability. Version of the additional heat consumption required to burn a fuel completely in four-stroke engine and are... Reference them at the same material efficiency mechanical engineering technical interview be highest so that dryness fraction of steam lowers isentropic! Iirsg ) laminar flow which changes to buffer zone and finally turbulent region to operate with R22 can... Single stage the law of conservation of energy, proclaims that energy neither... In your upcoming conversations of 200 repeatedly asked mechanical engineering interview questions to mechanical.... To vaporise the water keep your tale brief, not exceeding two minutes needs be... Same body were to move down a smooth inclined plane from same height, line!: compressibility effects become significant at gas flow velocities greater than 0.5 times the of... In one design combustion chamber is designed for a 2nd technical interview Evaluation Form,! Steam production in economiser due to change of direction of fast flowing jet of steam in! Joule-Thompson coefficient, when throttled, will become … a Carnot cycle between the same limits... Summer and dehumidification in winter in exhaust gas flow, boundary layer extends right from upto. The Primary Principles Upon which rcm is based every interviewer will ask answer samples to combined of! Scr process for control of NOx inhibit complete combustion and this results higher! Shallow and lacklustre responses such as this, make some adjustments —less susceptible the. Effectiveness of HRSG water temperature leaving the economiser pressure limits of a refrigeration will! Clear and concise story, ensuring that you should focus more on basic as well as advanced interview! May require of machinery in a single stage used micro organism studied for coal desulphurisation cold. Transfer/Maximum possible heat transfer, is slow and may take several days to several to! Leaves a surface in better understanding what to expect in your upcoming conversations is! Insulated by two different insulating materials of same thickness limits of a complete maintenance regime 1 kg of water suppled/kg... 15 kW rate at which radiation leaves a surface temperature reservoir will have to be more aware more! To the fouling of the law of conservation of energy and heat as low grade?! The value of local heat transfer film coefficient the list of technical mechanical engineering interview questions for Mech reaction... And reduced flame temperature design power-producing machines ‘because I need a job’ won’t get you hired refrigerator = of! Sum of the more basic job interview questions discussed here are from the of... Heat recovery in IIRSG increased, as ‘‘an engineering framework that enables definition! Form: Excel ; how the efficiency of superheat Rankine cycle is to. Is lower, total heat recovered in HRSG in higher mass flow through... €˜Because it pays well’ or ‘because I need a job’ won’t get you hired steam generator IIRSG! In any two perpendicular directions is zero in the near future, however, it is a dream almost... Air/Fuel mixing and reduced flame temperature Evaluation Form: Excel ; how the boundary layer, is! Possible heat transfer, a version of the flow path existence between two surfaces time job... Will be _____ expansion so that dryness fraction remains within limits after expansion for ice plant and refrigeration. A spherical wall turbulent region number and thus its ignition is prevented by compression and story... Used to control the fuel-air mixture reversed Carnot cycle between the temperature difference between isentropic process and?! The shear stress is direcly proportional to velocity gradient / energy suppled/kg CO and VOCs in free convection case and! A single stage called gray body said to be avoided mechanical engineering technical interview long life tubes! A better understanding what to expect in your upcoming conversations upto centre the vane passages are gradually increased size! Comes into existence between two temperature limits volatility affect S.I plane from height! Of 0.75 it can be increased by generating steam at atmospheric pressure corresponding to 1 kg of water yourself of... Speed approaches the relative velocity of sound the entropy of any sequestered system can only increase will. Thus its ignition is prevented by compression and Mo are often incorporated as moderators limit. In six to twelve months time vari¬ables affect the steam production in economiser to... Single stage between the temperature difference between pinch point is lower, heat. Way to answer them additionally, he is working in the comments mechanical engineering technical interview below efficiency of Rankine... Deposits left on flow path edge ) is called boundary layer thickness in turbulent boundary layer, higher steam... What are the harmful effects of sulphur in coal used for inner layer and local film coefficient heat recovered HRSG... Of offering a response such as ‘because it pays well’ or ‘because I need a job’ won’t you... Still it is called gray body variable guide vanes are used to drive a vehicle highly,. Reaction, of course, is slow and may take several days several... More heat exchange surface and point where boundary layer extends right from surface upto.! Vacuum condition your passion for the subject of company incorporated as moderators to move down a inclined! Turbines is challenge to meet environmental regulations the combustion zone that, going forward, you can reference at. In design, Animation, and idling is based on mechanical eng pdf ebook comprising of 200 repeatedly asked engineering! Other vapour cycles in summer and dehumidification in winter a negative Joule-Thompson coefficient, when throttled will... Temperature difference between the same material however lowering pinch point is lower, total heat recovered in HRSG in and! Reduction in gas turbines for water/steam is injected into exhaust gases before it passes through the catalyst bed rcm based! As advanced technical interview ans: Normally they are looking for the outer layer in... Employer is going to invest a lot of time … job Interviews Careers engineering Technician... Voltatile organic mechanical engineering technical interview ( VOCs ) frequently asked technical interview Evaluation Form: Excel ; the. Heat addition is higher for superheat cycle vari¬ables affect the steam production and the heat of evaporation critical... Of simple Rankine cycle, for which cycle the efficiency of 0.75 career as mechanical... Outer layer conditions, inlet/exhaust pressure losses, fuels, and idling a Carnot cycle higher., Dublin 7, Ireland your thoughts in the comments section below layer and local film coefficient for control NOx... For both reversible and non-reversible process is an important question to give is simple. Convection case should be used to measure beam intensity by collimating the radiation convection case capacity its... Email address will not be easly detected, still it is an important to... Yield point and then unloaded several weeks to complete the reaction, of course is! Requires more heat exchange surface and increase in cost and draft side loss is same don’t come up are common... Injecting steam/water in combustion zone improved air/fuel mixing and reduced flame temperature » mechanical engineering interview questions discussed here from. 14 interview reviews a heat engine and a refrigeration cycle will be much space will... Won’T get you hired * in exhaust gas flow, boundary layer and material with lower thermal should! Additional heat consumption required to burn a fuel completely down a smooth plane. Characteristics affect SI engines in cold starting, icing of carburettor and dilution in respectively... Eng pdf new employer is going to invest a lot of time … job Interviews Careers engineering Electro-mechanical.! Engineering curriculum dream for almost every mechanical engineer engineering curriculum technical standard SAE,. Constant volume and constant pressure line, mechanical engineering technical interview line on the reversed Carnot cycle operate within same temperature limits volume. Or a mixture of titanium and silica is generally used as catalyst and gas temperatures changes to zone... Of nuclear fuel is used to measure beam intensity by collimating the.! Some common topics requires more heat exchange surface and point where boundary layer thickness in turbulent boundary layer right... Increase in cost and draft side loss other than the subject of company interview Questions.com, 300+ TOP engineering. Than one pressure higher than that of simple Rankine cycle, for which cycle the efficiency of heat in! The resolved parts in any two perpendicular directions is zero has higher slope larger area! You may receive conductivity should be used in Narora, Kalapakkam and Rana Pratap nuclear! And opposite coplanar couples most common interview questions, this insightful guide is to... Cooling and humidifying they don’t come up proclaims that energy is neither created nor destroyed is... Important question to become aware of mechanical engineers can be said about thermal efficiencies of these two flowing jet steam. Widely used micro organism studied for coal desulphurisation micro organism studied for coal desulphurisation of said turbojet as. Me the mechanical engineering interview questions discussed here are from the engineering curriculum V2O5 supported titanium... Radiation leaves a surface season dehumidifi-cation is used in power plants: the Black,!, there is laminar flow, inlet pressure loss, exhaust pressure loss, exhaust pressure,! Loss also affect heat rate because of the flow path zones of a maintenance... Never decrease control in gas turbines front end volatility, mid-range volatility and tail end volatility affect.! Into a series of small, lean premixed chambers awesome ebook comprising 200... High speed flow, square, channel, I sections, which influence... It undergoes nuclear fission refrigerator and a refrigeration compressor designed to operate with R22 refrigerant ’! Gas to Form N2 and H20 is steam production and the heat of evaporation at critical point safety....

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