1. What are the entry requirements for Manufacturing Engineering with Business Studies? How may points are required?Ans Grade C3 in two Higher Level subjects (one of which must be mathematics or applied mathematics, and a Grade D3 in four Ordinary or Higher Level subjects ; furthermore, one of the D3 Grades must be from the following group of subjects: Physics, Chemistry, Physics with Chemistry, Engineering, Technical Drawing, Biology, Agricultural Science.How do you weld 25 mm thick plate? Essar oil 0 5 what is p11 1 46 What is a purpose of slow firing before commissioning of bagasse based boiler. and what is the water requirement for make up? self 1 21 by having a backlog in 1 sem mean that i will have astar in my certificate 0 10 WHAT WILL HAPPEN IF RELIEF VALVE IN HYDRAULIC SYSTEM FAILS? 0 45 what is the effect of steam turbine control valve throtting in turbine efficiency. 0 40 what is the difrence between goal and target? 0 36 can anyone plz send me question papers of DMRC for the post of junior engineer.(MECHANICAL) OR STATION CONTROLLER I wud b highly obliged. plz mail me at manpreet.sodhi08@gmail.com MANPREET SINGH DMRC 0 15 How tonnage can be controlled in PLC base hydraulic press 0 15 how to find out the area CFM calculation ? 0 34 who was the frist rail ladies driver RRB 2 163 why we r recommended for pre-action sprinklers @ generator/tx/mv panel room. If any leakage there,that panel will damage. So what is the Logic for pre-action sprinklers there? 0 39 when pump is maitaind throughly and installed perfectly then why pump vibrates on above standard vibration level? IOCL 2 250 What is welding defect? IOCL 2 295 How to analyse the best accuracy to micrometer than vernier? IOCL 1 88 What are the function of transduser,velocity sensor? IOCL 1 83 How does axial thrust balance in multistage pump? IOCL 1 108 What is breather frequency of tank? IOCL 0 25 STRESS PRODUCE STARIN OR STRAIN PRODUCE STRESS.....?EXPLAIN? ONGC 1 392 Detail About Disel Generators? TVS 1 59 working principle of ballpoint pen? 3 244 What achievements have given you the most satisfaction in your life? Nestle 2 268 What motivates you to do a good job? Maruti-Udyog 3 412 why conservator contains 8% total oil qty in transformer any formula to calculate 0 43 distance between the power generation and the distribution to the application is fixed or vary 0 27 how to calculate stiffners position and size in transformer design 0 23 how to calculate cg of transformer 0 25 why transformer required and why not voltage directly supply from power generation to the applications 0 20 what is an function of air cell bag in air cell conservator 0 27 how can i replace annular plats in tanks 0 23

Mechanical Engineering Interview Questions1. A bearing is designated as 6205 , what is its bore diameter?2. advantages and disadvamtges of using lpg in car?3. All Rector or Exchanger have spherical/hemispherical end Why?4. Compare Brayton and Otto cycle.5. current rating of a 3 phase DG set is 20 Amps, but what will be the per phase current for single phase supply.6. Define Overall Heat transfer coefficient.7. do any one have an idea,of saipem engineering interviw?8. Does Is 2062 Specifies Only Seamless Pipes Or Erw Pipe Is Also Covered Under Is 20629. During Steam Blowing Of Pipe Line, A Bluish Color Conical Pattern Is Observed At The End Of

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10. even though LPG is economical than petrol,why we are not promoting LPG usage?11. explain bearing nomenclature with example.12. Explain Why Nozzles are made convergent and Divergent?13. Funtion of cluch14. How a Diesel Engine Works in Generators?Explain with Labelled Diagram.15. how can u increase the efficiency of power plant without changeing in effort?16. How cooling Tower height selected E17. how gravity filling machine is designed18. How hydrulic power stearin @ lutch works plz explain?19. How Hydrulic Power Stering & Clutch works plz explain ?20. how much efficiency loss will took place in a steam turbine due to low vacuum21. how to calculate the speed of conveyer in meter per minute22. How to convert from HP to BHP or CC to Bhp please explain?23. How to find rating of Chiller a.c. plant i.e. how to calculate the a.c. load of an area, feeded by Chiller ?24. How to measure sound level of engine of tractor?25. how turbo charger works?26. If I want to set a power plant in desert of Rajasthan and I have option of steam and gas power plant. Which plant I should set up?27. if the blade height is increased,then how it increases the specific speed of centrifugal pump?28. if u have to give support in 1 km long bridge,where u will give it & how many?29. In a Waste heat recovery boiler feed control valve is after the economiser where as in auxilary boiler feed control valve is given before the economiser.why?30. In auto mobile industry for any type of vehicle how can we differentiate 2 stroke and 4 stroke engine....31. In hydroulic clutch mechanism can i adjust clutch play? if it is possible plz explain ?32. increase in unit speed increases the discharge of impulse turbine how?33. Name fuels used in nuclear power plant?34. On what property u can distinguish material as brittle or ductile?35. On what thermodynamic cycle nuclear power plant works?36. Pipe. Whats The Concept Behind It?37. Purpose of centrifugal pump casing wear ring and impeller wear ring what is back plate in centrifugal pumps and its purpose?38. Suppose a steel bar of cross sectional area A is subjected to load P at one end and 2P at the other end ,what will be the induced39. waht is vaily gap in welding?40. what are engines that use carburetor and that use inductor ? difference between them41. What are the conditions considered while evaluvating MARGIN OF SAFETY for newly designed mechanical components....? or42. what are the types of welding machine?43. What are your significant functional achievements in the present company? How did they contribute to the total process44. What do you mean gy "Clausius inequality"?45. What does a pump develops? Flow or Pressure. Give the Answer with Proper Logic.46. what for orifice using in liquid flow line47. what is bearing? how many types of bearing48. What is difference between sand blasting and grit blasting ? What is its purpose and how is it done ?49. what is drive speed & what is driven speed50. What is Dry Bulb Temperature and Wet Bulb temperature?51. what is electronically operated pneumatic valves? give one example52. What is FEED?

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53. what is friction?54. what is gear ratio & how it can calculate55. what is gyroscopic & gyroscopic effect?56. What is mean by Resistance welding57. What Is Mean By Ss-314(Stainless Steel Pipe Garde)?58. what is pulverisation59. what is requirement of bottle filling machine60. What is Solution Annealing? kindly explain its process in brief.61. what is the basic need for designing the bottle filling machines62. What is the critical speed. Compare the critical speed of hollw shaft and solid shaft.63. What is the definition of mechanical64. What Is The Difference Between Rated Speed And Economic Speed?65. What Is The Difference In Is2062 And Is123966. what is the diffrence between construction of reaction turbine and impulse turbine67. what is the diffrence between Torque and Power ( layman Idea)?68. what is the manufacturing process for impellers of closed, semiopen and open type?69. What is the principle of operation of simple jet propulsion system?70. what is the relationship between cop and hp(horse power) of compressor?71. what is the thermodynamics?72. what is the use of vanadium (non metal) ?73. What is thermodynamics?74. what is unit Ps ?75. what's the difference between front and rear wheel drive?on what basis we choose the type of drive?76. whats the range of poissons ratio of a stable material??77. when a solid shaft is subjected to tension its linear dimension changes equaly as its lateral dimension,then what will be its poissons78. Whether ductile material can fail in brittle manner? WHEN?79. which engine is more suitable over all. petrol engine, diesel engine . what are their differences80. Who are the leaders among expansion valve manifacturers? what are the recent developements in the expansion valve industry, used in refrigeration abd air-conditioning?81. Why Air Conditioner capacity measured in Ton. Like 1.5ton82. why as atmospheric pressure increases,boiling point also increases?83. why desuperheater tubes are bend in shape84. why diesel engine does not have spark plug like petrol engine, how ever petrol is better fuel than diesel?85. why does cycle rim dont bend even in heavy loads?86. Why green curtons are used in hospital?87. why petrol engine gives more power than diesel engine eventhough diesel engine has high compression ratio?88. why petrol engines have more power than diesel engines of same capacity?89. why the backwheel of tractor is bigger than frontwheel?90. why the path of a satellite is always elliptical with earth not at the centre of the ellipse?91. Why tyres are manufactured in black colour?92. why we cant measure absolute entropy directly,but the change we can?93. why we express the unit of torque in Nm.even though it can be expressed as Joule ( J )?94. why we have to know the specific frequency of any equipment? does anybody know about specific frequency ?95. Will anybody tell me about types and numbers of sensors in toyota corolla gli,honda civic and suzuki cultus vxri???96. Write down the epression for air standard efficiency of diesel cycle?97. You have to design a machine component. For what type of failure (ductile or brittle) you will design?98. Explain the second law of thermodynamics. The entropy of the universe increases over time and moves towards a maximum value. 99. How do you measure temperature in a wet bulb thermometer? Wet bulb temperature is measured in a wet bulb thermometer by covering the bulb with a wick and wetting it with water. It corresponds to the dew point temperature and relative humidity. 100. What is bending moment? When a moment is applied to bend an element, a bending moment exists in the element 101. What are the points in the stress strain curve for steel? Proportional limit, elastic limit or yield point, ultimate stress and stress at failure. 102. Define Reynolds number. Reynolds number is the ratio of inertial force and viscous force. It is a dimensionless number. It determines the type of fluid flow. 103. What is a Newtonian fluid? A Newtonian fluid possesses a linear stress strain relationship curve and it passes through the origin. The fluid properties of a Newtonian fluid do not change when any force acts upon it. 104. How many joules is 1 BTU? 1 BTU is equal to 1055.056 joules. 105. What is PS? PS is Pferdestarke, the German unit for Horsepower. 106. Explain Otto cycle. Otto cycle can be explained by a pressure volume relationship diagram. It shows the functioning cycle of a four stroke engine. The cycle starts with an intake stroke, closing the intake and moving to the compression stroke, starting of combustion, power stroke, heat exchange stroke where heat is rejected and the exhaust stroke. It was designed by Nicolas Otto, a German engineer. 107. Explain the nomenclature of a 6203-ZZ bearing. 6 is the type code, which shows it is a single-row ball bearing, 2 is the series, means light, 03 is the bore, which is 17 mm and ZZ is the suffix meaning double shielded bearing. 108. What is gear ratio? It is the ratio of the number of revolutions of the pinion gear to one revolution of the idler gear. 109. 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. 110. Define torque. Torque is defined as a force applied to an object that results in rotational motion. 111. What is ductile-brittle transition temperature? It is the temperature below which the tendency of a material to fracture increases rather than forming. Below this temperature the material loses its ductility. It is also called Nil Ductility Temperature.

Why earthing is required for electric equipment Answers: 1.For human protection,2.For euipment protection,3.both,4.None 13 519 A tractor with 4 cylinder engine give 90 HP and a car with 2 cylinder engine give 120 hp EXPLAIN 2 611 what is more dangerous longitudinal stress or Hoop stress and why? 2 708 what is Investment casting? how it is differ from other casting process? 1 329 what is the role of half nut in thread cutting? how can u cut the thread from 8 TPI to 4 TPI? 2 322 Turbo charger driven by.............? and wat its speed 7 1858 Whether ductile material can fail in brittle manner? WHEN? 9 3447 how to prepare for bhel et interview 0 340 sir, please send me the last three years exam papers conducted by BHEL- RECRUITMENT EXAM FOR SUPERVISOR TRAINEE FOR MECHANICAL ENGINEERING. A Soon as possible. i would be greatfull to u Aa 1 1527 sir I have applied for HPCL management trainee..Can i get previous MECHANICAL ENGINEERING question paper..? stalin HPCL Hpcl 3 2991 what is the relation between f and reynolds number? 5 2684

BHEL Latest placement papers and Interview questions

1. The ratio of two specific heats of air is equal to. = 1.412. A perfect gas at 270C is heated at constant pressure till its volume is double. The final temperature is = 3270C3. An engine operates between temperature of 9000K and T2 and another engine between T2 and 8000K. For both to do equal work, value of T2 will be. = 6500K4. Internal energy of a substance depends on = Temperature5. Work done in compressing 1kg of gas adiabatically from p1,V1,T1 to p2, V2, T2 is equal to = Cv(T2-T1)6. The unit of entropy is = J/kg 0K7. Indicated power of a 4-stroke engine is equal to = pLAN/28. Which of the following is not an internal combustion engine : a) 2 stroke petrol engine b)4 stroke petrol engine c) Diesel engine d) steam engine e) Gas turbine. = (d)9. If one cylinder of a diesel engine receives more fuel than the others, then for that cylinder the: a) exhaust will be smoky b) piston rings would stick into piston grooves c) exhaust temperature will be high d) engine starts overheating e) all of the above. = (e)10. The spark plug gap is normally maintained at: = 0.45 to 0.6mm11. A distributor in spark ignition engines performs the function of : = Providing the correct firing order in engine12. Which of the following does not relate to C.I. engine:: a) fuel pump b) fuel injector c) governor d) carburetor e) flywheel = (d)13. Air fuel ratio in a jet engine is = 60:114. What is the value of Prandtl No.?15. In domestic refrigerator, the tubes at the back of the refrigerator are: a) evaporator b) condenser c) capillary tubes d)16. Which refrigerants has the highest critical point temperature. = Freon-1117. Wet bulb temperature is. = indication of amount of moisture in air18. On psychrometric chart, dry bulb temperature lines are. = Vertical19. Surface tension has the units. = newtons/m20. The line of action of the buoyant force acts through the. =centroid of the displaced volume of fluid21. A pressure of 25m of head of water is equal to. =245kN/m222. For a submerged body to be in stable equilibrium, the centre of gravity should be. =Below the centre of buoyancy.23. The actual velocity at vena contracta for flow through an orifice from a reservoir of height H=?. =Cvv2gH24. A body weighing 2kg in air weights 2.5kg when submerged in water. Its specific gravity is. = 625. In a free vortex motion: = each particle moves in a circular path with a speed varying inversely as the distance from the centre.26. A centrifugal pump has speed-1000rpm, Flow-1200l.p.m, Head-20m, Power-5H.P. If its speed is increased to 1500rpm, new flow will be.: = 1800l.p.m27. Runaway speed of a hydraulic turbine is: = the speed if the turbine runner is allowed to revolve freely without load and with the wicket gates wide open.28. 10m of water column is equal to = 100kN/m229. M.I. of a circular area about an axis perpendicular to the area is: = pr4/230. A projectile is fired at an angle ? to the vertical. Its horizontal range will be maximum when ? is . =45031. An elevator weighing 1000kg attains an upward velocity of 4m/sec in two seconds with uniform acceleration. The tension in the supporting cables will be = 1200kg.32. A 13m ladder is placed against a smooth vertical wall with its lower end 5m from the wall. What should be the co-efficient of friction between ladder and floor so that it remains in equilibrium. = 0.2133. A car is moving with a velocity of 60km/hr and possesses energy of 5105 joules. The mass of the car will be. =3000kg.34. If l is the span of a light suspension bridge whose each cable carries total weight (w) and the central diop is y, the horizontal pull at each support is: = wl/y OR35. A beam of length l, having uniform load w kg/unit length is supported freely at the ends. The moments at mid span will be: = wl2/8.http://www.ChetanaS.org36. A boiler shell 200cm dia and plate thickness 1.5cm is subjected to internal pressure of 1.5MN/m2, then the hoop stress will be. = 100N/m237. 100KW is to be transmitted by each of two separate shafts. A is turning at 250rpm and B at 300rpm. Which shaft must have greater diameter.: = B38. Two identical leaf springs of spring constant k are arranged like cantilevers in parallel and attached at free end by a spring of spring constant k. The equivalent spring constant of combination is; = 1.5k.39. Automobile steering gear is an example of: = lower pair.40. The type of coupling used to join two shafts whose axes are neither in same straight line nor parallel, but intersect is. = Universal coupling.41. To transmit power from one rotation shaft to another whose axes are neither parallel nor intersecting, use: = Spiral gear.42. A gear having 100 teeth is fixed and another gear having 25 teeth revolves around it, the centre lines of both gears being joined by an arm. How many revolutions will be made by gear of 25 teeth for one revolution of arm. = 5 rev.43. The secondary critical speed of a shaft occurs at: = twice the speed of primary critical speed.44. Brittle coating technique is used for: = experimental stress analysis.45. Factor of safety is the ratio of: = yield stress/working stress.46. Type of gear used for non-intersection perpendicular shafts: = Hypoid gears.47. Corrosion resistance of steel is increased by adding: = Chromium & Nickel48. The product of Cupola is called: = cast iron49. Brinell tester uses a hardness steel ball of size: = 10mm50. Sintered and tungsten carbides can be machined by: = EDM51. What kind of abrasive cut off wheel should be used to cut concrete, stone and masonry? =Diamond grit.52. In break-even analysis, total cost consists of: = Fixed cost + Variable cost.53. The amount deducted from the salary of workers towards employees provident fund is : =deposited in the account of worker with Provident Fund Commissioner.54. PERT is: = event oriented technique55. Bar charts are suitable for: = minor works.56. ? on a PERT/CPM chart represents: = a significant event representing some mile-stone57. Electron volt is the unit of : = Energy.58. Seamless tubes are made by?59. Reheating in gas turbine results in: = increase of work ratio and decrease of thermal efficiency.60. Why DC current is not used in transformer?61. What is the purpose of draft tube in hydraulic turbines: = to convert the kinetic energy into pressure energy.62. A mass of 100kg is falling from a height of 1m and penetrates the sand to 1m. what is the resistance force of the sand?63. Two cars travel in the same direction at 40km/hr at a regular distance. A car comes in the opposite direction at 60km/hr. It meets each car in a gap of 8 seconds. What is the distance between the two cars?Another paper:-I attended the BHEL Engineer Trainee written test in Mechanical stream. They conducted for four brances in Engineering: Comp sci, ECE, EEE and Mech. In Mechanical stream there were a total of 240 questions.120- Technical questions in Mechanical Engineering120- General Apptitude questions. (Quantitative Aptitude, Reasoning Ability, Logical thinking, English usage)The questions were mainly asked inThermodynamicsEngineering MechanicsTheory of machinesProduction techIf you have strong fundas, u can really do well in this sessionFollowing are the questions asked: (I will try to give you as many questions as i remember)[One Mark for correct answer, 1/5th for wrong answer. Five choices were given]1)Unit of Entropy (J/kg K or kJ/kg K)2)A mass of 100kg is falling from a height of 1 m and penetrates the sand into for 1 m. What is the resistance force given by sand.3)Ratio of specific heats of air. (1.41)4)A body weighs 3 kg in air. If it is submerged in a liquid, it weighs 2.5 kg. What is the specific gravity of the liquid.5)Two cars travell in same direction at 40 km/hr at a regular distance. A car comes in a opposite direction in 60km/hr. It meets each car in a gap of 8 seconds. What is the distance between them?6)A simple problem involing in hoops stress. For sphere: M= [3/2]*p*V*[density of pressure vessel material/Maximum working stress it can tolerate] For Thin walled pressure walls: Hoops stress or stress in the radial direction =p*r/2t7)A problem in force calculation in a body moving in a inclined surface.8)Composition of bronze. (Copper+zinc)9)Compostion of stainless steel.(iron+chromium+nickel+carbon)10)CI is manifactured in which process. (cupola process)11)What percentage of carbon is preset in pig iron. (4.5 to 6%)12)Water is available at 10m height. What is the pressure available? (pressure=density*g*height; p=1000*9.81*10; p=98100N/m2) Che tanaS13)What will happen if the speed of the centrifugal pump doubles.14)The unit eV is widely used in ? (Nuclear and atomic physics)15)What will happen to the resistance, when the diameter of the conductor is doubled?16)The power comsumed by a electrical device is 1000W at 250V, What is the resistance in the device?(Power= Voltage*current; Current=Power/Voltage, Current,I=1000/250=4amps. V=IR, Therefore R=250/4=62.5 ohms)17)Why DC current is not used in transformer.18)On what principle the sonar/ radar works?19)Bending moment diagram for the UDL is in what shape?20)Function of the distributor in petrol vehicles? (Spark timing)21)Which is not present in CI engines? (carburrettor)22)What will happen if one cylinder recieves more amount of fuel spray from injectors than other injectors?23)Purpose of draft tube in hydraulic turbines? (The purpose of a draft tube is toconvert some of the kinetic energy of the flow from the runner (the rotating part of the turbine) intopressure energy and thereby increase the efficiency ofthe hydro power turbine.)24)What is the effect or reheater in the gas turbine? (The advantage of reheater is significantly increased thrust; the disadvantage is it has very high fuel consumption and inefficiency) http://www.ChetanaS.org25)Problems involving with fricition coefficient.26)Factor of safety = Yeild stress/Working stress.27)Which is the example of non parallel power transmission (Universal coupling)28)For perpendicular shafts worm gear is used.29)A planet gear with 25 teeth is meshed with a sun gear of 100 teeth. Both are connected using a arm. How many rotations are needed for planet gear to complete one rotation around the sun gear?30)What is equivalent spring constant for spring in parallel?31) Some questions was asked related to boundry layer and vortex flow.32) 5 questions were asked in PERT, Process planning, Product planning, Break even analysis.33)How are tungsten and sintered composite materials are machined? (Electro Discharge Machining, EDM)

1. What is your name ?

2. Tell me about your family back ground ?

3. How is steam generated, at what temperature and pressure? what is specific heat?

4. What is back pressure turbine?

5. How do you govern turbine ?

6. Name different turbines.Which turbine is used at Bhakhra Dam?

7. Parts and fuel for gas turbine ?

8. What do you know about BHEL ?

9. Your vision for INDIA 2020 ?

10.How does inflation effect you ?

11. What is GDP ?

12. How is electricity produced ?

13. What all can be done from hydrogen ?

14. What is the effect of temperature on viscosity of a lubricant ?

15. What will happen if petrol is inserted in a diesel car ?

1)Unit of Entropy (J/kg K or kJ/kg K)?

2)A mass of 100kg is falling from a height of 1 m and penetrates the sand into for 1 m. What is the resistance force given by sand?

3)Ratio of specific heats of air ? (1.41)

4)A body weighs 3 kg in air. If it is submerged in a liquid, it weighs 2.5 kg. What is the specific gravity of the liquid ?

5)Two cars travell in same direction at 40 km/hr at a regular distance. A car comes in a opposite direction in 60km/hr. It meets each car in a gap of 8 seconds. What is the distance between them?

6)A simple problem involing in hoops stress. For sphere: M= [3/2]*p*V* [density of pressure vessel material/Maximum working stress it can tolerate] For Thin walled pressure walls: Hoops stress or stress in the radial direction =p*r/2t?7) A problem in force calculation in a body moving in a inclined surface?8)Composition of bronze?ans. Copper+zinc.9) Compostion of stainless steel.?ans. iron+chromium+nickel+carbon.10) CI is manifactured in which process?ans. cupola process11)What percentage of carbon is preset in pig iron?ans. 4.5 to 6%.12)Water is available at 10m height. What is the pressure available?ans= pressure=density*g*height;p=1000*9.81*10;p=98100N/m2.13)What will happen if the speed of the centrifugal pump doubles?14)The unit eV is widely used in ?ans. Nuclear and atomic physics.15)What will happen to the resistance, when the diameter of the conductor is doubled?16)The power comsumed by a electrical device is 1000W at 250V, What is the resistance in the device?ans. Power= Voltage*current,Current=Power/Voltage,Current,I=1000/250=4amps. V=IR,Therefore R=250/4=62.5 ohms.17)Why DC current is not used in transformer?18)On what principle the sonar/ radar works?19)Bending moment diagram for the UDL is in what shape?20)Function of the distributor in petrol vehicles?ans. Spark timing.21)Which is not present in CI engines?ans. carburrettor.22)What will happen if one cylinder recieves more amount of fuel spray from injectors than other injectors?23)Purpose of draft tube in hydraulic turbines?ans. The purpose of a draft tube is toconvert some of the kinetic energy of the flow from the runner (the rotating part of the turbine) intopressure energy and thereby increase the efficiency ofthe hydro power turbine.24)What is the effect or reheater in the gas turbine?The advantage of reheater is significantly increased thrust; thedisadvantage is it has very high fuel consumption and inefficiency.25)Problems involving with fricition coefficient.26)Factor of safety = Yeild stress/Working stress.27)Which is the example of non parallel power transmission (Universal coupling)?28)For perpendicular shafts worm gear is used?29)A planet gear with 25 teeth is meshed with a sun gear of 100 teeth. Both are connected using a arm. How many rotations are needed for planet gear to complete one rotation around the sun gear?30)What is equivalent spring constant for spring in parallel?31) Some questions was asked related to boundary layer and vortex flow.32) 5 questions were asked in PERT, Process planning, Product planning, Break even analysis.33)How are tungsten and sintered composite materials are machined?(Electro Discharge Machining, EDM)