saurabhjain

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    Questions on the concepts of automobile engineering.
  1. What is difference between stress and pressure?
  2. List three principal factors that influence engine performance ? You can answer this question. You can like the best answer. You can share the question You can get updates of new questions on Facebook linkedin twitter & google plus
  3. A vertical plate and a horizontal plate are suspended in an open room. Both are heated to the same temperature. Which one will cool first? Why?
  4. A cantilever beam is loaded a point on its ends what will be the effect in shear force?
  5. What do you know about Finite Element Analysis ? 1. You can answer this question 2. You can like the best answer 3. You can share the question.
  6. Planar Guidance - Case Erector

    From the album Example model simulations for Packaging Machine Design.

    Case Erector Mechanism opens case as it loads conveyor This mechanism is used to erect pre-glued cases from a magazine and place on an indexing conveyor. The mechanism forces the case to open as it is pulled from the magazine. -- Some mechanisms are very useful in packing machine simply because they move parts along a useful path. We want to guide a pack along a path that avoids hitting packs that have already been erected in the previous cycle. The pack must not hit the gripping tool. The pack must be rotated by 90 degrees and move along a path that avoids other objects. This is known as a problem of planar guidance. The Pin-Slide-Pin mechanism is rotated by 90 degrees by a cam driven rocker. This type of mechanism has a useful path with almost straight line extraction and placement. The configuration of the mechanism determines the rotation angle. Two parallelogram four bars on the rocker and slider make the second set of suction cups translate. This means the Case is erected as the cams rotate the mechanism.
  7. Why centrifugal pump casing is called involutes casing?
  8. What is the function of thermostat in cooling system of an engine ? You can answer this question. You can like the best answer. You can share the question You can get updates of new questions on Facebook linkedin twitter & google plus
  9. Simple Machines

    Quiz author has to click button .. "Allow playing" .. this is because ..he has added 7 questions and the quiz is not ready -- may be he is adding 3 more questions... once he click on allow playing.... the quiz be open for every one .... And I can see - he has added quiz but nit added any questions......
  10. Plasma Arc Welding

    From the album Engineering images 10

    In plasma-arc welding (PAW), developed in the 1960s, a concentrated plasma arc is created and directed towards the weld area. The produced arc is stable and reaches temperatures around 33,000°C. Plasma is an ionized hot gas composed of nearly equal numbers of electrons and ions. The plasma is started between the tungsten electrode and the orifice by a low-current pilot arc. What creates plasma-arc welding unlike other processes is that the plasma arc is concentrated because it is forced through a relatively small orifice Plasma Arc Welding Torch Operating currents generally are below 100 A, but they can be superior for special applications. While a filler metal is used, it is fed into the arc, as is made in GTAW. Arc and weld-zone shielding is supplied by means of an outer-shielding ring and the use of gases like the following argon, helium, or mixtures.
  11. types of chip.jpg

    Type of chips Continuous chips Discontinuous chips Built up Chips
  12. Version

    7,600 downloads

    Geometric Dimensioning and Tolerance ppt Five powerpoint presentations
  13. How many manholes should be there on boiler? Why?
  14. Selection of material is an important aspect for manufacturing industries . The quality of product is highly depends upon its material properties. These properties are used to distinguish materials from each other. For Example: A harder material is used to make tools.A ductile material is used to draw wires. So the knowledge of mechanical properties of material is desirable for any mechanical student or for any person belongs to mechanical industries. This post brings top 18 mechanical properties. Mechanical properties of material: There are mainly two types of materials. First one is metal and other one is non metals. Metals are classified into two types : Ferrous metals and Non-ferrous metals. Ferrous metals mainly consist iron with comparatively small addition of other materials. It includes iron and its alloy such as cast iron, steel, HSS etc. Ferrous metals are widely used in mechanical industries for its various advantages. Nonferrous metals contain little or no iron. It includes aluminum, magnesium, copper, zinc etc. Most Mechanical properties are associated with metals. These are #1. Strength: The ability of material to withstand load without failure is known as strength. If a material can bear more load, it means it has more strength. Strength of any material mainly depends on type of loading and deformation before fracture. According to loading types, strength can be classified into three types. a. Tensile strength: b. Compressive strength: 3. Shear strength: According to the deformation before fracture, strength can be classified into three types. a. Elastic strength: b. Yield strength: c. Ultimate strength: #2. Homogeneity: If a material has same properties throughout its geometry, known as homogeneous material and the property is known as homogeneity. It is an ideal situation but practically no material is homogeneous. #3. Isotropy: A material which has same elastic properties along its all loading direction known as isotropic material. #4. Anisotropy: A material which exhibits different elastic properties in different loading direction known as an-isotropic material. #5. Elasticity: If a material regain its original dimension after removal of load, it is known as elastic material and the property by virtue of which it regains its original shape is known as elasticity. Every material possess some elasticity. It is measure as the ratio of stress to strain under elastic limit. #6. Plasticity: The ability of material to undergo some degree of permanent deformation without failure after removal of load is known as plasticity. This property is used for shaping material by metal working. It is mainly depends on temperature and elastic strength of material. #7. Ductility: Ductility is a property by virtue of which metal can be drawn into wires. It can also define as a property which permits permanent deformation before fracture under tensile loading. The amount of permanent deformation (measure in percentage elongation) decides either the material is ductile or not. Percentage elongation = (Final Gauge Length – Original Gauge Length )*100/ Original Gauge Length If the percentage elongation is greater than 5% in a gauge length 50 mm, the material is ductile and if it less than 5% it is not. #8. Brittleness: Brittleness is a property by virtue of which, a material will fail under loading without significant change in dimension. Glass and cast iron are well known brittle materials. #9. Stiffness: The ability of material to resist elastic deformation or deflection during loading, known as stiffness. A material which offers small change in dimension during loading is more stiffer. For example steel is stiffer than aluminum. #10. Hardness: The property of a material to resist penetration is known as hardness. It is an ability to resist scratching, abrasion or cutting. It is also define as an ability to resist fracture under point loading. #11. Toughness: Toughness is defined as an ability to withstand with plastic or elastic deformation without failure. It is defined as the amount of energy absorbed before actual fracture. #12. Malleability: A property by virtue of which a metal can flatten into thin sheets, known as malleability. It is also define as a property which permits plastic deformation under compression loading. #13. Machinability: A property by virtue of which a material can be cut easily. #14. Damping: The ability of metal to dissipate the energy of vibration or cyclic stress is called damping. Cast iron has good damping property, that’s why most of machines body made by cast iron. #15. Creep: The slow and progressive change in dimension of a material under influence of its safe working stress for long time is known as creep. Creep is mainly depend on time and temperature. The maximum amount of stress under which a material withstand during infinite time is known as creep strength. #16. Resilience: The amount of energy absorb under elastic limit during loading is called resilience. The maximum amount of the energy absorb under elastic limit is called proof resilience. #17. Fatigue Strength: The failure of a work piece under cyclic load or repeated load below its ultimate limit is known as fatigue. The maximum amount of cyclic load which a work piece can bear for infinite number of cycle is called fatigue strength. Fatigue strength is also depend on work piece shape, geometry, surface finish etc. #18. Embrittlement: The loss of ductility of a metal caused by physical or chemical changes, which make it brittle, is called embrittlement.
  15. What is the difference between casting & forging? Why use castings & why use forgings? 1. You can answer this question 2. You can like the best answer 3. You can share the question...
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  17. View this quiz Production engineering quiz 1 lets check your knowledge on production engineering Submitter saurabhjain Time 10 minutes Type Graded Mode Submitted 05/03/2017 Category Mechanical Engineering Quiz  
  18. View this quiz Machine Design Quiz 1 Questions on the concepts of Machine Design Submitter saurabhjain Time 5 minutes Type Graded Mode Submitted 04/21/2017 Category Mechanical Engineering Quiz  
  19. Overhead Cam Engine & Pushrod

    From the album Engineering images 10

    Overhead valve, also commonly called pushrod, engines are a simplified V-style design. These are built to be compact and resistant to oil contamination and are often used in small displacement racing.In consumer automotive, however, the pushrod engine has largely been replaced by the SOHC and DOHC designs....
  20. What is the difference between closed coiled and open coiled helical spring? 1. You can answer this question 2. You can like the best answer 3. You can share the question
  21. Why worm gear drive is used for hoists ? 1. You can answer this question 2. You can like the best answer 3. You can share the question.
  22. What condition must be satisfied in order that a pair of spur gear may have a constant velocity ratio? 1. You can answer this question. 2. You can like the best answer. 3. You can share the question You can get updates of new questions on Facebook linkedin twitter & google plus