Mechanical Engineering

wheels at the back push the vehicle forward.

4 wheels at the back provides twice friction against the road making the chance to slip due to it's own weight fairly low. these type of vehicles needs these extra set of wheels especially on rainy days. the front wheels need not to add an extra pair because they are needed to maneuver the vehicle and would make it harder to turn with 4 wheels in front (i can only say that someone can possibly build a vehicle with 4 wheels in front by a custom build if he wants it. also no car factory has ever done a vehicle with 4 wheels in front)

heavier loads requires more wheels at the back and middle as to distribute the weight of the axle load.

-arvinkasumi

In this case PCO stands for Plastic Closure Only. This is a name for a particular thread used for plastic bottles and caps. 28 stands for the 28mm diameter of the thread.

if you see volumetric efficiency is compared with the swept volume of compressor without considering the clearance which is normally 5% of the swept volume so you can say 95% is the max. vol. eff

Mortgage interest run on

The hot working of steel can easily be defined as " the mechanical working on steel after heating above the recrystallization temperature" e.g. forging, hot pressing, drawing etc.

calorimeter

mild steel is heavier

12 km

An A/C compressor sucks refrigerant gas from the evaporator inside the car and compresses it into high pressure liquid. So the tubing that goes from the evaporator inside the car to the compressor is called the suction line.

* Not in this order.Harvard,UC Berkley Yale ,Cambridege University Magille University are my five * Jahangirnagar University

One has an "A" after the A53, the other has a "B". Quite obvious.

A needle made out of steel - the sort you sew a button on with.

It comes out of the vacuums exhaust equally as smelly

Private financial/financing institutes

300000$

The combustion stroke is where all of the power from an engine is derived making it the most important however the other strokes play a role in how well the combustion process is completed. Each stroke is vital in the process of combustion.

It differs from a diesel engine in the method of mixing the fuel and air, and in the fact that it uses spark plugs to initiate the combustion process. In a diesel engine, only air is compressed (and therefore heated), and the fuel is injected into the now very hot air at the end of the compression stroke, and self-ignites. In a petrol engine, the fuel and air are usually pre-mixed before compression (although some modern petrol engines now utilise cylinder-direct petrol injection). The pre-mixing was formerly done in a carburetor, but now (except in the smallest engines) it is done by electronically-controlled fuel injection. Pre-mixing of fuel and air allows a petrol engine to run at a much higher speed than a diesel, but severely limits their compression, and thus efficiency

Beneath the pilots feet are the control systems. In the nose is the radar

The term flux means to clean. Not all welding processes use a flux. Stick welding electrodes contain fluxing agents. MIG hard wire doesn't but flux-cored MIG wire does. TIG does not as the rods are bare. Most brazing applications require flux. Gas welding usually doesn't except for certain metals.

a good welding helmet must be tolerable to very high temperatures.

It should be large enough to protect your face and neck. It should be light in weight. It should have a comfortable headband.

it is ratio of the total heat transfer from the surface area associated with both the fins and exposed portion of the base to maximum heat transfer from same surface area

(in ideal conditions we get maximum heat transfer)

to hold more weight and to span more distance

In computer modeling, assembly constraints are parameters that define geometric relationships between components in an assembly of parts.

When applied between certain parts, they remove the degrees of freedom of those parts (degrees of freedom are the directions in which an object can move, and there are 6 of them: backward/forwards or along the z axis, up/down or along the y axis, left/right or along the x axis, rotation around the z axis, rotation around the y axis, and rotation around the x axis.)

Types of assembly contraints include:

~mate: constrains two faces, edges, points, or axes together. Think of it as sticking two parts together.

~flush: constrains two faces or work features together. Think of it as lining two parts up, changing from ----- to -----

-------- --------

~angle: constrains two faces or edges at a specified angle to one another. This is pretty intuitive.

~insert: constrains a cylinder into a hole + flushes it so it fits just rights. This is, for example, how you put screws and bolts into their holes in an assembly.

~tangent: constrains a curved surface to a plane or other curved surface. This is like mate for curved surfaces.

Assembly contraints are different from geometric and numeric constraints. The former only applies in 2D sketches, and the latter is not only limited to 2D sketches but also only includes numeric values or aalgebraic equations.

In an assembly, you can also have drive constraints, which are simulated movements of assembled parts through specified steps. Though these occur in assemblies, they are not the same as assembly constraints.