0
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
How many email accounts are there in the world?
An estimate by a research organization suggests a number in the region of 1.3 billion users, meaning accounts. Data is valid in 2010 but it will be no surprise to see the number rise in the future.
What is a 'spherical plug valve' and where is it used?
Can be used on gas supply and heating systems to THROTTLE flow
Definition for elastic vibration?
The definition of elastic vibration was found in the website at the bottom. Elastic vibration is oscillating movement of a solid object in which a large majority of the energy is retained though elastic forces and with inertia of the object.
www.answers.com/topic/elastic-vibration
Where do you put assembly lube on main bearing when installing?
You don't. Assembly lube should be used on cams, rocker arms, lifters, springs, etc, but not on cranks or main bearings. Assmebly lube is a high pressure lubricant used for initial start up and break in. It will clog the oil galleys on the crank, and may even give false readings when torquing the mains back down. Motor oil will be just fine, more specifically, 5w30 or 10w30 and convential, not synthetic oil should be used.
Principal stresses are those stresses that act on principal surface. principal surface here means the surface where components of shear-stress is zero.
a cyclometer is a device that multiplies the number of time the wheel of a bicycle has gone around by the distance around the oustside of the wheel9the wheel's circumference). The answer id hte distance that you have traveled.(Each time the wheel goes around, your bike moves forward one circumference of the wheel. Wheels come in different sizes, so you must set the cyclometer fir the exact curcuference of your wheel. The parts of a cyclometer:
Cable
Sensor
Cyclometer
A device designed to permit the entry of a cable into an electrical equipment and which provides sealing and retension.
Cable well tightened with supporting of cable holding material into an electrical equipment or panels.
There are probably other context, but one common meaning is "Inches Per Minute".
Will a 48volt motor fit in a razor electric scooter?
maybe, but you have to see if the wires and the motor can fit it. That would be great if you can but the bad thing is the motor is made for a cycle with bigger batteries. the ride time would be cut in half because of the elctric draw.
Find the diagonal of a square with sides measuring 6 units?
If the square has been plotted in a graph, you can go about finding the diagonal of it by measuring the midpoint.
(1) Find the coordinates of the vertices of the square
(2) Use the coordinates of two vertices that are across from each other. Plug them into the midpoint equation: (X1 + X2)/2 , (Y1 + Y2)/2, and use your answers as the coordinates of the midpoint (x,y)
(3) Draw a straight line crossing through the midpoint from one opposite vertex to another. That is your diagonal.
Advantage of internal combustion engine?
The advantages of the internal combustion engine is that it is:
* Cheap
* High power to weight ratio
* It is possible to raise the efficiency to relatively high levels by minor means
* Emissions are minimized by advanced combustion control, design and aftertreatment. The only emission that can't be reduced by aftertreatment is carbon dioxide, here advanced control and new technology come in to play. In fact, atmosphere background emissions can very well be higher than those coming out of the tailpipe (carbon monoxide/unburned hydrocarbons).
What material are manholes made of?
The rims and covers are usually forged steel, though the rims are sometimes welded up. It's strong enough to take the weight of vehicular traffic that rolls across it. The covers are round because round covers cannot fall into the hole.
The manhole itself is usually a concrete vault that is precast and set in place. It is then backfilled, which is the process of packing earth (or sand) around the vault to "fill in" between the vault and the hole in which it was set.
Basically ink goes down the reservoir and stick to one side of the small ball at the tip of the pen. Then when the ball rolls, the ink on the ball rolls with it and when it touches an absorbing surface, well it transfers onto it.
How you can measure the vibration in rotary equipment?
An accelerometer can be mounted on the surface of the machine which will measure the vibrations acceleration this is usually integrated to velocity for the purposes of analysis. Velocity is usually measured in mm/s (millimeters per second) or IPS (inches per second) in the US) while acceration in usually measured in G (9.8 mm/s/s). To convert between vibration acceleration, velocity and displacement you can use the following free tool from vibronurse the link is (http://www.vibronurse.com/cmcalculator.html). The alternative method is to use proximity probes (which uses an eddy current coil) these will normally be fitted to the machine by the original manufacturer.
Cracking pressure is minimum upstream pressure at which a check valve operates.
Why is the british locomotive the 9F called a 9F?
The 9 comes from the power classification system used by Britsh Railways and the F stands for freight use. Since the 9F was never fitted with steam heating they could not be used on passenger work outside of the summer months.
Basically a high efficientcy filtered fan unit sometimes known as an air polisher, commonly used in health care and other areas requiring clean air.
What do you mean by Inventory control of spare parts?
Spare parts inventory control is about having the right part, in the right quantity, at the right place and time for corrective maintenance. Inventory accuracy and appropriate replenishment policy is key to success. Dennis Lord
Is amity university is AICTE approved?
no it's not AICTE approved it's not even UGC approved.it's top management has a criminal history.Amity university is fighting with the govt to get a UGC approval.
How does the anti skid work on a Boeing 737?
Similar devices on other planes work something like sanders on locomotives or trucks, they release some sort of ballast on the pavement-or runway, and may have serv-controls which make some adjustment on the wheel brakes. in fact the call for setting thesde things up was Anti-Skid--On (or armed) and four releases, the releases would click like a parking brake on a car or (click stops) on some cameras with a sort of auditory feedback. four clicks meant the system was armed- which suggests (Toggling off) Ballast, so to speak. That"s my guess. the devices are only used on slick pavements- marginal weather, not all landings.
