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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
What are the applications of slider crank mechanisms?
Can you use astm a105 instead of astm a216 wcb?
yes, we can use A105 instead of WCB.
WCB is the casting grade while the A105 is equivalent forged grade.
Is the gain same for same system in open loop and closed loop?
A: DEFINITELY NOT Open loop is defined as no feedback. any kind of negative feedback will reduce the gain
What are the applications of gyroscopic couple?
-Directional and control devices
-inertial guidance system
-stabilizing device
-helicopter
Why not use stainless steel screws on aluminum?
Galvanic corrosion occurs when the two meet (especially when water is present) - use a barrier lubricant (Tefgel or anti-seize)
or plate the screws with Nickel/Teflon or Cadmium.
What is the ASTM equivalent of IS 2062?
Astm a36. Its rot rolled steel with nearly matching with astm a36.
Yes, but the etching solution and type to be used depends on the material
Hi..spare part is parts or item of inventory that is used for the repair or replacement for a vehicle. its called spare part.
What is the hardness of 1095 steel?
It depends on the heat treatment. 1095 has a high carbon content so it is capable of achieving high hardnesses, but only in thin sections because its low hardenability.
What is the differeance between upwind and downwind turbines?
An Upwind turbine faces into the wind with the turbine blades in front of the Nacelle* while a Downwind turbine has blades to the rear of the Nacelle and faces away from the wind. Up-wind turbines are by far and away the most common, but down-wind turbines (usually two-bladed) are also used in certain situations.
In very strong winds the turbine blades of a wind turbine generator flex under enormous forces. With a down-wind turbine the blades flex AWAY from the mast which prevents them from crashing into it. Up-wind turbines need to be designed so that the blades are positioned at a good distance from the mast, and they must also be engineered to be inflexible (which costs more money). In addition, when the blades of a down-wind turbine bend it reduces the stresses on the mast as wind energy is lost in bending the blades. Finally, down-wind turbines do not need a tail (or motorised yaw mechanism) to align them with wind as the turbine blades perform this task (although this can also be a serious disadvantage in large down-wind turbines if wires carrying huge currents are getting twisted).
Down-wind turbines on the other hand are generally noisier (additional aerodynamic noise), and the blades are subject to more forces than those of up-wind turbines. Another serious disadvantage of a down-wind turbine is wind shadow behind the mast causing a drop in power each time a blade passed behind the mast.
*Nacelle = is located at the top of the mast and contains the rotor and generator, and sometimes a gearbox. Basically it is everything except the turbine blades, tail, and mast.
What jobs would be for gas engineering?
Gas engineers usually have to explore for new oil, and extract that oil, and with everyone so dependent upon oil, you shouldn't find it hard getting a job in this field.
That depends on the context. For instance, when using a number in certain programming languages (such as Java, or Python 2.x), it may mean that the number should be treated as a "long".
Why fracture strength is always greater than yield strength?
The material has to stretch (strain) first before it breaks. For ductile materials, when stretch reaches a certain point it permanently deforms (yield) and continues to carry load until it then breaks as load increases.
For brittle materials like glass which do not permanently deform thay simply break without yield.
Is defined as ratio of uniform stress to volume strain?
is defined as ratio of uniform stress to volume strain
What is the relationship between engineering strain and percent elongation?
strain is percent elongation/100; for example a strain of 0.02 is 2% elongation. Often we refer to elongation at failure; for example if a material fails at 10% elongation its strain is 0.10
What are second phase particles?
During precipitation hardening, few very small and uniform particles are added through compacting in order to improve the strength of the lattice. These particles are known as second phase particles.
Why speed of the induction motor falls when load is increased?
As the load increases, the speed reduces to deliver the increased torque required.
Yes, that is proper technique.
What 'safe working load' term when applied to axle stands?
the safe working load is the load the stand can support safely without failure. It Is called safe because it can generally stand up to five times the safe load but one should not intentionally exceed the safe load. Safe load is also called working load or rated load
