mechanical engineering

Fundamental Concepts and Terms in Vibration Vibration is a mechanical phenomenon, It is a movement first in one direction and then back again in the reverse direction. e.g: the motion of a swinging pendulum, the motion of a tuning fork. Any simple vibration is described by three factors: its amplitude; its frequency and rate of oscillation. Some of the general terms you will come across while studying on vibration topic are Oscillatory motion, Simple Harmonic Motion, Periodic Motion. now we will see the above mentioned terms in brief. Oscillatory motion is described as motion that repeats itself in a regular intervals of time. for example a sine wave or cos wave or pendulum. The time taken for an oscillation to occur is often referred to as the oscillatory period. Simple Harmonic Motion: Simple Harmonic Motion is periodic motion in which the restoring force is directly proportional to the displacement. F = -k*x A simple harmonic motion of a pendulum is an example of m

Career after Graduation from B.Tech / B.E Mechanical Engineering in India Going through the strenuous course of completing a B. Tech degree is definitely an achievement. But for a mechanical engineer the struggle doesn’t end there. Mechanical engineering is one of the oldest branches of engineering. It is also referred to as the mother of engineering. This field has a wide scope of learning and is extremely diverse. Most of the modern day inventions are contributed to this  field of engineering . Mechanical engineers have to understand various concepts like thermodynamics, mechanics, robotics, kinematics, fluid mechanics, heat transfer,  CAD ,  CAM . All these concepts are universally used to create and design different type’s motor vehicles, manufacturing units, aircraft and aerospace parts and other assortments of machineries that are used every day and also at industries. So once you are in final year or graduated in B. Tech/B.E in Mechanical Engineering from India,

Worlds Top 5 Largest Diggers [Infographic] The increasing demand for basic commodities has driven up prices and spurred a global mining boom, but it is not an easy task to get them from mines because big layers of rock have to be moved first. Mw Hire Group made Infographic on  heavy machines around the world  that can make task easily. Worlds Largest 5 diggers included in this infographic are: Bucyrus RH400 Hydraulic Shovel Takraf Bagger 293 Bucket-Wheel Evacuator Caterpillar 797F Metso Mobile Crusher Le Tourneau 2350   SHARE ON FACEBOOK

Did You Know: Energy-Efficient UPS Systems Play an Inevitable Role in the Industrial Sector? The role played by an Uninterruptible Power Supply(UPS) system cannot be ignored in any data centre or mission critical facility. This is true because these areas require consistent availability of power. UPS systems provide two types of power support namely – filtered power and backup power. Filtered power gives support to the mission critical facility in times of power fluctuations whereas, backup power supports in case of any power outage. Also, it is a well-known fact that energy costs have increased manifold in the last few years and simultaneously one can see that power outages are on rise. Therefore, an effective use of energy has become a primary cause of concern for different industry verticals. Today, many data centre and facility managers know about the energy-saving mode of operation of UPS systems. This is popularly known as eco-mode and it has gained massive popularity

What are the Products formed during Petroleum Refining Process ? Fraction of products formed during  petroleum refining process  are fuel gas, propane, butane, light naptha, heavy naptha, kerosene, middle, distillate, light gas oil middle distillate and heavy gas oil. There apparatus boiling temperatures of fractions are listed in below in tabular form. S.no Fraction Apparatus boiling range temperature °C Remarks 1 Fuel gas -160 to -44 CH 4 , C 2 H 6  and propane used as refinery fuel. 2 Propane -40 LPG. 3 Butane -12 to -30 Blended with motor gasoline to increase its volatility. 4 Light Naptha 0 to 150 Motor gasoline for catalytic to increase its volatility. 5 Heavy Naptha 150 to 200 Catalytic reforming fuel blended light gas-oil t form jet fuels. 6 Kerosene middle distillate 200 to 300 Domestic Aviation fuel. 7 Light gas oil middle distillate 200 to 315 Furnace fuel oil to diesel 8 Heavy gas oil 315 to 425 Feed for catalytic cracking 9 Vacuum gas oil 425

Syllabus for GATE Mechanical Engineering (ME) Syllabus for Graduate Aptitude Test in Engineering (GATE) Mechanical Engineering (ME) Examination. Section 1: General Aptitude Verbal Ability:  English grammar, sentence completion, verbal analogies, word groups, instructions, critical reasoning and verbal deduction. Numerical Ability:  Numerical computation, numerical estimation, numerical reasoning and data interpretation Section 2: Engineering Mathematics Linear Algebra:  Matrix algebra, systems of linear equations, eigenvalues and eigen vectors. Calculus: Functions of single variable, limit, continuity and differentiability, mean value theorems, indeterminate forms; evaluation of definite and improper integrals; double and triple integrals; partial derivatives, total derivative, Taylor series (in one and two variables), maxima and minima, Fourier series; gradient, divergence and curl, vector identities, directional derivatives, line, surface and volume integrals, applica

Fuel Cells: What are They and How do They Work ? There are many people who believe that much of the power generation of the future will be through the use of fuel cells. They are already being used in various capacities, and the technology is rapidly advancing, which will soon enable even more practical and larger applications. This article will briefly look at fuel cell basics, current applications, and how it can be used in the future. Fuel Cell Basics A fuel cell is basically a battery and it works in the same way as illustrated in the below flash animation. It uses a fuel, most often hydrogen, as the electrolyte. An advantage they have over batteries is that they do not run down. They also produce no pollutants, but will produce water as a by-product, as well as heat. Flash Source :  ucsusa.org In order to produce power, the fuel in a fuel cell has to be supplied continually. Two fuels are needed, and the most common are hydrogen and oxygen, or air may be used.

Properties of Good Lubricants A lubricant is a substance introduced to reduce frictional force and heat generation between the surfaces in mutual contact, when the surfaces move. A good lubricating oil generally possess the following characteristics: Suitable Viscosity:  The viscosity of oil should not change with rise in temperature. Oilness:  It ensures the adherence to the bearings and spread over the surface. This property makes oil smooth and very important in boundary lubrication. Strength:  The lubricant must have high strength to avoid metal contact and seizure under heavy loads. Chemical Stability:  The lubricant should not react with surfaces and any deposit in the cylinder. Pour Point:  It should be low to allow the flow of lubricant at low temperature to the oil pump. Flash Point and Fire Point:  The lubricating oil should not burn inside the cylinder, otherwise it will leave heavy deposit and poisonous exhaust. Therefore, the flash point and fire point o

Perpetual Motion Machine (PMM) Any device which violates  first law  or  second law  of thermodynamics is called a perpetual motion machine (PMM). These devices operate under the principle of sustained or perpetual motion. That is, the machine will continuously perform same function repeatedly without stopping. Perpetual motion machine can be of two types: PMM-1:  Perpetual motion machines of first class  does work without intake of energy, thus violate the first law of thermodynamics. PMM-2:  Perpetual motion machines of second class  is an engine without any heat rejection or a refrigerator without work input, thus violate second law of thermodynamics. Despite of numerous attempts, no perpetual motion machines is known to have worked in nature. Some GIFs that make us believe perpetual motion machines a reality GIFs source If construction of perpetual motion machine is possible in nature then we could generate free energy, no need to worry about fuel and

Greatest Mechanical Principles and Inventions Here are some of the animations of the greatest mechanical principles and inventions, which shows greatness of human brain. Simple animation pictures are used to explain mechanisms of Boxer Engine, Geneva Drive, Radial Engine, Wankel Cycle. 1. Boxer Engine: A Boxer Engine is a flat engine IC engine with multiple pistons that move in a horizontal plane. The layout shown in animation has cylinders arranged in either side of a single crankshaft and it is sometimes known as horizontally opposed engine. 2. Geneva Drive: The Geneva drive is a gear mechanism that translates a continuous rotation into an intermittent rotatory motion. The rotating drive wheel has a pin that reaches into a slot of the driven wheel in regular intervals advancing driven wheel by one step. The drive wheel has a raised circular blocking disc that locks the driven the driven wheel in position between steps. 3. Radial Engine: Radial Engine is a r

Vocational Courses on CAD/CAM, Automation, VLSI and Micro Controllers The Central Institute of Tool Design ( CITD ) is a premier Institute in India to provide specialized summer and winter vocational training courses in Tool Engineering,  CAD / CAM , Automation, VLSI and Micro Controllers. CITD was established in the year 1968 by the Government of India with the assistance of United Nations Development Programme ( UNDP ) and International Labour Organization ( ILO ) as an executing agency. The Institute conducts summer and winter training programmes right from Diploma to Post Graduation level. The Institute conducts International training programmes in CAD/CAM, Tooling and Automation areas. In addition to the training programmes, the Institute also undertakes Design and manufacture of Toolings/Precision Components, Assemblies and Automation Systems. The tool room is equipped with sophisticated machines such as CNC 5-Axis and 4-Axis Vertical machining centres from Bridgepo