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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

How do you get the sling pin out of the G36 grip and attach a bipod?

There is a button-like pin attached to the underside of the hand guard that holds the sling pin in place. Push it in and it will release the pin, allowing you to pull it out. To attach the Bipod, simply fit it into the recess at the very front of the hand guard and replace the sling pin. -Josh

What does it mean to have an ideal mechanical advantage of 7?

The ideal mechanical advantage is calculated as:

Ideal_Mechanical_Advantage = distance_moved_by_effort / distance_moved_by_load.

It is ideal because it ignores real world factors like energy lost through friction.

So an Ideal Mechanical Advantage (IMA) of 7 means that the machinery amplifies the applied effort by 7.

For example, a 7 kg load can be balanced using a block-and-tackle arrangement (which has 7 ropes supporting the load block and thus an IMA of 7) using only 1 kg and lifted by applying slightly more than 1 kg.

In the real world, there is friction between the pulleys and their bearings so that more real effort is required before the load moves and the real Mechanical Advantage of the above block-and-tackle arrangement is less than 7.

Ahman is trying to lift an 8-N load that is attached to a fixed 2-pulley system his hands move a distance of 1.6m while the load moves 0.8mwhat force is required?

Assuming the pulleys are frictionless, which they are pretty close to:

You have a mechanical advantage of 2, hence your hands move double the distance that the load moves. So you only need half the force, 8N / 2 =

4N.

What is it welding sequence and explain about it?

Weld sequence would specify the order in which welds are to be made on a structure to help against distortion and residual stresses.

Examples of bad conductor of heat?

Most things are not conductors of heat, or electricity. This means that the substances contain a large number of free electrons. Some of these are water, plastic, rubber, glass, lead, and wood.

Why compounding is necessary in steam turbine?

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Which is more powerful engine 4age blacktop or b16a?

It really depends on which b16 you're referring to. The older models produce under 120kw with the newer ones more around the 130kw mark. The blacktop produces 121kw. All in all they are almost identical in power, so it really comes down to the weight of the vehicle.

Why spur gear are not having axial thrust?

This is wrong because it has all the gears are driven.

What are the qc tools?

Following are the seven QC tools - Quality Control tools or Quality Circle tools (since they are used in Circles): 1. Check sheet (Data Collection sheet) 2. Bar chart, Pie chart, Histogram 3. Pareto Analysis (ABC analysis) 4. Cause and Effect diagram (Fishbone diagram) 5. Control Charts 6. Scatter Diagrams 7. Stratification analysis In addition to these 7 tools, Brainstorming is sometimes referred to as an OLD QC tool. For detailed reading, refer - TQM by JAYAKUMAR by SUGANTHI - Prentice hall

What is self priming pump?

In self primming pump, there in no need for removing the air from in the casing.

Eg piston pump

What is the Formula for sag in a catenary?

If: A=Horizontal distance betwen ends (at same height) B=Depth of catenary C=radius of curvature at lowest point L=length along catenary M=Mass per unit length Tm=Tension at ends of catenary To=Tension at lowest point. (Also horizontal component of tension at any point) Then: C=To/M, and B=C(cosh(A/2C)-1)

What is service factor?

Service factor is a measure of overload capacity at which an electric motor can periodically operate at without damaging the motor. for example, a 1 horsepower motor with a service factor of 1.15 can be run at 1.15 times its rated amperage without damaging the motor.

Can you use unleaded 95 petrol in a two stroke engine?

yes, but you still have to add 2-stroke oil unless you want to burn the engine up.