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Mechanical Engineering

Mechanical Engineering is a branch of engineering that encompasses the generation and application of heat and mechanical power and the design, production, and use of machines and tools. Mechanical engineering involves application of the principles of dynamics, control, thermodynamics and heat transfer, fluid mechanics, strength of materials, materials science, electronics, and mathematics.

10,989 Questions

Does load affects fuel consumption per hour of a diesel generator?

If the generator is to maintain the same rpm and power output, then a heavier load will increase the diesel consumption.

The revolutions per minute the generator runs will increase as the load increases, thereby resulting in an increase in diesel consumption to maintain the high rpm.

A Generator has a governor which attempts to maintain frequency at 60 Hz for North America. For the generator to increase the power output at the same frequency, the governor will increase the fuel and air to the engine. The fuel consumption will not be linear because of the curves associated with the particular engine. The fuel to KWH is know as the heat rate curve for the generator.

Which is equal to the ideal mechanical advantage of a pulley system?

It only takes half the effort to move an object but twice the distance

What is limit of proportionality?

It is the point at which the stress-strain graph of a material deviates from being a straight line. It is the point at which a material stops obeying Hooke's Law

Architecture or mechanical engineering?

Architecture if you are more of the artistic type, but also somewhat interested in math and physics, which you will need to understand if you are to be an architect. If you are very much into mathematics and physics, but not interested in art and design, then mechanical engineering would be better for you.

Why do you need technical drawing?

So know how to build things instead of pile of I-beams and piles of cement willy-nilly. Perhaps building not your thing. So, it is easier to know the length, width, height better, without having to gess.

Fees structure of engineering colleges in maharashtra?

The fee structure will vary depending on the courses taken. You will need to check with each college.

What are the Loads on roller and ball bearings?

Most roller bearing systems help create a decreased amount of friction between items, such as a wheel and the axle the wheel has been centered on. This allows the wheel to spin freely on the axle without being bound by the force of friction. It also decreases the force of drag on the wheel as it spins. This allows a wheel to be more easily pushed by any power source applied to it, whether it's an engine or a person pushing a car.

What are examples of turbulent flow?

Smoke rising from a flame. At first the smoke rises with laminar flow before becoming turbulent just a few centimetres above the source.

What is the Ultimate strength of 12.9 tensile bolt?

The ultimate tensile strength of a 12.9-grade tensile bolt is typically around 1,220 MPa. This means that the bolt can withstand a maximum tensile load of 1,220 mega pascals before failing. It is important to note that the actual strength can vary slightly depending on the specific manufacturer and production process.

How to make a line follower without microcontroller.Please also provide links?

There are several examples of BEAM robots which are line followers. BEAM robotics uses simple logic chips for the "brain" like the 74AC240 which costs $1 or so. The rest of the components are discrete components which means no microcontrollers are involved - only the usual parts like diodes, resistors, capacitors etc. I've included 2 links in the "Related Links" section below.

Why should the coefficient of thermal expansion of a refractory metal be the lowest?

refractory metals have high melting points and are used in extremely hot environments; if expansion coefficient is lower this prevents high stresses that can develop due to thermal gradients during the high heat up. It helps to have high thermal conductivity as well

Why crane hook materia is high carbon steel?

the main reason might be that the percentage of carbon increase the hardness of material (steel ) and ductility would decrease

How to write my resume formate?

You create a table that you're on one side and the other at your jobs

What are the disadvantages of expansion?

Well,the well known negative affects of anamolous expansion are:- 1.Due to anamolous expansion the pipes usually burst in winter,because the expansion of water in winter is much more than is much more than the expansion of pipes. to avoid bursting the pipes are covered wid insulating material.

How does temperature change E for steels?

Going cold, not very much - it may get a 2% higher at cryogenic temps. Going warn, it does decrease by up to 20% as you get to 1000 degrees F ( from 30 Msi to 24 Msi)

What is shaft bearing?

A shaft bearing is a low friction support device for a rotating member of a mechanical machine.

Does temperature affect the yield strength of low carbon steel?

it will start to change slowly after 20 degrees C. At 400 degrees C it will degrade quickly - almost linealy to 800 C where it will hve reached approx 10% of its yield strength.

What piece of steel is stronger 14 or 20 gauge?

The smaller the gage the thicker the material; therefore, for the same material, 14 gage is stronger.

What is conventional suspension system?

Two wheels are mounted on either side of the rigid axle .When one wheel encounters the bump, both the wheel do not execute parallel up and down motion So it gives rise to gyroscopic effect and wheel wobble. Rear driving wheels mounted on live axle suspended by laminated leaf springs and shock absorber

Abhijit jain

student at medicaps institute of technology and management.