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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
Is there any fundamental unit associated with Rockwell Hardness Test?
No, because hardness is not a fundamental quality
What is the difference between mechanical and electrical degrees?
There is no such difference between any of the technical degree because these all are separate fields related with tere own applications but they were connected internally.
AnswerWhen a device rotates through a complete circle, we say that it has 'rotated through 360o'. In a very simple, two-pole, generator, when the armature (loop of wire) rotates through a 360o, it generates a complete 360o sine wave across its terminals. But with a four-pole machine, the armature needs only to rotate 180o to generate the same 360o sine wave.
To differentiate between the physical rotation of the armature, and the resulting sine wave, we call the former 'mechanical degrees' and the latter we call 'electrical degrees'.
How do you change the transmission fluid in a Allison transmission?
I would need to now the model of the Allison, there are different procedures depending on model.
Allisontech
What is the origin of the name 'steel' as applied to the commercial iron carbon alloy?
Steel, as fully hardened iron alloy (case, rather than surface) Old English style, from West Germanic adjectival stakhlijan "made of steel" (Old Swedish stehli, Old Norse, Middle Low German stal, Danish staal, Swedish. stål, Middle Dutch stael, Dutch staal, Old High German stahal, German Stahl), related to stakhla "standing fast," from Proto Indo European stek-lo-, from base stak- "to stand, place, be firm"
What is a Swiss lathe machine used for?
Swiss-style lathes are used for machining components requiring extreme accuracy. some of these lathes are capable of machining to within 0.00025mm or 0.00001in. Swiss-style lathes are used for smaller and/or longer workpieces, the lathes are applicable for different industries to machine parts.
What problem occurs when a generator is run at 50 percent load?
After given 50% load that time engine was start to hunting
Does the crankshaft nut trun left or right to loosen?
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It depends on which way the crank rotates. If it rotates clockwise the nut will be threaded on counterclockwise to prevent it from loosening. If the crank rotates counterclockwise then the nut will be threaded on clockwise.
What is the relationship between the yield shear stress and uni axial yield stress in tension?
It depends on the material. Most metals obey the maximum distortion energy law in which the shear yield is the tensile yield divided by square root of 3, or 0.577 x tensile yield.
How do you calculate pressure from wood pressing machine?
First, you must know the pressure of your hydraulic system, the diameter of the hydraulic cylinder, and the coverage of the pressure (panel surface). You may calculate total capacity of your cylinder by multiplicate system pressure by the era of cylinder. Then you have to divide this amount by the superficie of charge. Ex. Hydraulic pressure : 1200 Psi. Cylinder diameter : 100 in² Pressing era : 110 in X 220 in = 24 200 in² (1200 psi X 100 in²)/24 200 in² = 5 psi board pressure
Can poisson's ratio be greater than 1?
yes
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No, it cannot be greater than 0.5
See link for more details.
What is an approximate linear absorption coefficient of steel?
Pure shear applies when you twist something (torsion) or under direct lateral load with no bending, as in a pin
How do you calculate the COP of refrigeration?
See COP examples in the Cryogenics section of wikipedia SRF: http://en.wikipedia.org/wiki/Superconducting_Radio_Frequency#Cryogenics In short, COP=1/efficiency. The efficiency is the product of the Carnot efficiency and a "practical" mechanical efficiency that is typically in the range 0.25-0.3. See also wikipedia Coefficient of Performance: http://en.wikipedia.org/wiki/Coefficient_of_performance
What are automated production systems?
A Fully Automatic System is a type of method of operation for items of technology to help achieve fast and accurate results without requiring a high degree of technical knowledge on the part of the human operators. An example of a specific area of technology that uses a fully automatic system is the ''Fully Automatic System for Monitoring Blood Pressure" which is used in the field of medicine.
What is the meaning of rosemount?
Rosemount refers to a famous American plantation. It is known for its revival of Greek house design and is known as "The Grand Mansion of Alabama" in Forkland, AL.
How do you Calculate design temperature?
The best answer is to look for Dr Nuzul. He is an expert about design temperatue.
