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 is the relation between the movement of the piston and the movement of the crankshaft?
In essence, the the displacement of the piston is porportional to the sine of the phase of the crankshaft. this isn't quite true but it gives a rough idea of what is happening. if you meant what happens in one cycle of a piston/crankshaft then it is essentially this: as the piston moves down it forces the crankshaft through one half of a revolution and then on the way back up the piston forces the crankshaft through the remaining half of a revolution - back to its start position to start again
Stress on minor diameter of bolt when bolt is subjected to longitudinal force?
The stress on a bolt under longitudinal force is the total force on the bolt divided by the stress area. The stress area is a little bigger than the minor diameter area, calculated from the average of the minor diameter and pitch diameter.
The total force on the bolt is its torque preload plus the (bolt stiffness/(bolt +member stiffness) x (externally applied load )
Rolled steel angle, often referred to as angle iron, is a structural steel product formed by bending a flat steel plate into an L-shaped cross-section. It is commonly used in construction and manufacturing for its strength and versatility, serving as a support beam, bracket, or frame. The dimensions of rolled steel angles are specified by their leg lengths and thickness, making them suitable for a variety of applications. These angles can be made from carbon steel, stainless steel, or other alloys depending on the intended use.
How would you measure dust level in your working environment?
Clean room particle counters can be used to measure dust level in the air, but they're going to cost you. See this comparison of some hand-held devices:
http://www.particlecounters.org/handheld/index.html
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.
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.
How much of an object is imagined to be cut away in a half-section?
A quarter in order to expose half of the interior and half of the exterior in a single plane.
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?
Ecibth CV to do I po LCC I'll Jhbgbf g hc cm di m to d Ni
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.
What is the abbreviation of CDI engine?
CDI unit (which is the abbreviation of the "Capacitor Discharge Igniter")
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
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.
