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
What are the relation between tensile stress and shear stress and bearing stress?
Tensile Stress is approximately two times the shear stress.Relationship bet n Tensile Stress and bearing stress varies from application to application.It Depends on Various Factors.
Can an electrical starter turn without electricity?
No, an electrical starter can not turn without an electrical source.
What is Ultra-High-Strength Steel?
it is technically about 3 times more tensile than ordinary steel .therfore this steel becomes a ultra strenthenedsteel.
INFI steel is used by Busse Combat Knives. The performance of INFI in the blades of Busse Combat has been demonstrated live by jerry Busse at live and public demonstrations at knife shows, as well as in videos and pictures, these include thousands of push cuts on full once inch hemp rope without sharpening, cuts though a hanging bundle of 10 strands of inch hemp, multiple 2x4's chopped with the knife still shaving, and very heavy prying loads and bends to a very high degrees without breaking on a fully hardened blade.
INFI has: 0.5% carbon, 8.5% Chromium, 0.74% nickel, 0.36% vanadium 1.3% molybdenum 0.95% cobalt and 0.11% nitrogen. The rest is iron (obvious).
What is the function of back pressure valve in Boiler feed pump?
The function of back pressure valve is to prevent back flow to the pump in case there is an obstruction on downstream side of valve.
What is the runway speed of a hydraulic turbine?
Runway speed is the speed at full opening of guide vanes at nominal head and no load on Generator
What happens in a grit chamber?
in a grit chamber mixing of grit takes place.after grit mixing only organic matter remains
What is non concurrent force system?
In a concurrent force system, all forces pass through a common point. In the previous case involving the application of two forces to a body, it was necessary for them to be colinear, opposite in direction, and equal in magnitude for the body to be in equilibrium. If three forces are applied to a body, as shown in the figure, they must pass through a common point (O), or else the condition, SMo= 0, will not be satisfied and the body will rotate because of unbalanced moment. Moreover, the magnitudes of the forces must be such that the force equilibrium equations,
SFx= 0, SFy= 0, are satisfied.
Why coefficient of performance of absorption cycle is less than compression cycle?
In case of vapour compression cycle (VCC) the COP is given by (desired effect / work input). in the other words it can be defines as what we want and what we are paying for that... so in VCC the paying amount is very less as due to low temperature difference that why its value is more than 1. but in case of vapour absorption system the COP is given by (heat taken by evaporator/ heat given to generator). the heat input taken by evaporator is less as compared to heat given to generator.. that why its COP is less than 1......
What does P and H stand for on large mechanical equipment?
Pawling and Harnischfeger
Industrial artisans Alonzo Pawling and Henry Harnischfeger started the manufacturing business that would evolve into P&H Mining Equipment in 1884 in http://wiki.answers.com/en/Milwaukee, http://wiki.answers.com/en/WisconsinUSA.
How are overhead traveling cranes powered?
While overhead traveling cranes are sometimes operated manually, they are usually powered by electricity
What do you have to do to change a motor from carbarator to fuel injected?
An understanding of fuels systems for engines. The correct and complete injection system for the engine. A well equipped workshop and a great deal of engineering skill.
This link explains it very well.
http://www.physlink.com/education/AskExperts/ae221.cfm
How much does Spaceship Earth weigh?
It weighs sixteen million pounds, is 180 feet tall, and takes up two million cubic feet of space.
How can you open a Samsonite Travel Sentry threedigit lock if you forgot the code?
Funny thing. I actually had the same Samsonite Sentry lock for years stuck in the unlocked position because i DID forget the code too. Just recently figured out how to unlock the sucker. Here's what you do. This works for whether it's stuck in the open or locked position but you forgot the code.
1) Make sure the lever is in the "closed" position. Even if it's not closed, line it up with the opening
2) Push down on the lever and keep it held down throughout the rest of the directions
3) Starting from the bottom dial, slowly turn it through each number. Each normal number should have the same resistance as you're turning it UNTIL you get to the right number. When you get the right number suddenly you should feel it easily pop into place like it wants to be there.
4) Repeat with the next dial up and then the last dial at the top.
5) When you feel the last dial just "pop" into place like the other two, the lever should suddenly be free to recess into the lock OR be unlocked and able to twist around freely.
6) now remember this combo or to reset the lock to a code you can remember.
Honestly, it seems way too easy to unlock this thing and your luggage suddenly doesn't feel THAT safe anymore does it?
How do you turn a bar on a center lathe?
The basics procedure used for turning a bushing on lathe are:
- Material is inserted and tightened into the chuck so it protrudes about 10mm over the actual length of the final bushing length
- If the material is not hollow bar, a drill is inserted into the tail stock then the material is drilled to enable the a boring bar to fit the hole
- A roughing tool is inserted into the tool post then the face of the workpiece is machined smooth and the outside diameter to about 0.5mm oversize
- A roughing boring bar is inserted into the tool post and the inside diameter is machined to roughly 0.5mm undersize
- A finishing tool is then inserted into the tool post then first the face and then the outside diameter of the workpiece is machined to the required size
- At this point a finishing boring bar is inserted into the tool post and the inside diameter is machined to the required size
- Chamfer tools are then used to chamfer both outside and inside edges at the face
- The parting tool is inserted into the tool post then the bushing is parted off about 0.5mm to 1mm longer than specified.
- The remainder of the material is removed from the chuck then the parted bushing is inserted and tightened with the unfinished side protruding about 5mm to 10 mm.
- A finishing tool is inserted into the tool post then the face is machined to the required size
- Chamfer tools are then used to chamfer both outside and inside edges at the face
The above method is just a basic explanation of how the operation is achieved. Operating a lathe without proper training is not recommended and could lead to serious injury!
How do you build a paper boat?
Below is a link that features a number of tutorials on how to make a variety of paper boats .
What formula do I use to set the angle on my lathe's tool post to cut a taper from a drawing?
A = Large end diameter of the taper
B = Small end diameter of the taper
L = Direct distance between A and B
Formula: A \ B \ L \ 2 then Invert Tangent = The degrees you set your tool post at.
