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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
The ISO metric screw threads are the world-wide most commonly used type of general-purpose screw thread.Machine Screws have machine threads for use with a nut or in a tapped hole.It is also referred to as a stove bolt.
Why there should be difference in actual loads and theoretical calculated loads?
The theoretical loads being calculated should be higher than the actual loads that will be used in reality because the weight capacity of a structure, vehicle etc. should exceed the amount of weight it is intended to actually hold. This is true for any type of load, driveshafts, shirt buttons, whatever.
How is disturbance part of the meaning of turbine?
The term "turbine" inherently suggests disturbance due to its function of converting fluid motion—whether from water, steam, or gas—into mechanical energy. This process involves the disruption of a fluid's flow, creating turbulence and energy transfer. The very design of turbines relies on managing these disturbances to optimize efficiency and output, making them integral to various energy generation systems. Thus, disturbance is not just a byproduct but a fundamental aspect of how turbines operate.
Minimum distance below sink to trap?
What is the minimum distance between the bottom of a sink and the trap attachment for a bathroom sink
Why need to do PWHT for carbon steel use to caustic service pipe?
There is caustic stress corrosion cracking when carbon steel is exposed to concentrated caustic solution. Caustic SCC is driven by tensile stress, susceptible material and concentration of caustic. So, lack of PWHT will increase susceptibility also hardness and residual stress that is the more significant factor in caustic corrosion.
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Abdul Khaleem Abdul Razak
What is nozzle less propulsion?
Nozzle-less propulsion refers to a type of propulsion system that operates without a traditional nozzle to direct the flow of propellant. Instead, it utilizes alternative mechanisms, such as electromagnetic forces or plasma dynamics, to generate thrust. This approach can potentially reduce complexity, weight, and increase efficiency in certain applications, particularly in advanced aerospace technologies. Research is ongoing to optimize these systems for practical use in spacecraft and other vehicles.
Why is mill cert so important?
With the document, It proves that the material that the customer is receiving had met their requirements through materials testing.
venturimeter, orificemeter are some of the instruments used to measure the flow rate in pipe.
The bulk modulus (K) is a material's resistance to uniform compression from all directions. If you have Young's Modulus (E) and Poisson's ratio (ν), the relationship is:
K = E/(3*(1-2ν))
For E = 220 GPa and ν = 0.29, K = 174.603 GPa
What is super critical technology?
»The supercritical technology is nothing but the thermodynamic where there is no clear distinction between the Water and Steam phase in the Rankine Cycle
•Water reaches to steam state at a critical pressure above 22.1 Mpa.
How do you find modulus of resilience?
Resilience is the ability of a material to absorb energy when it is deformed elastically, and release that energy upon unloading. The modulus of resilience is defined as the maximum energy that can be absorbed per unit volume without creating a permanent distortion.
It can be calculated by integrating the stress-strain curve from zero to the elastic limit. In uniaxial tension,
where
Ur is the modulus of resilience,
σy is the yield strength,
and
E is the Young's modulus.
How long do you need to study for to become a mechanical engineer?
Engineers typically enter the occupation with a bachelor's degree in an engineering specialty, but some basic research positions may require a graduate degree. Engineers offering their services directly to the public must be licensed. Continuing education to keep current with rapidly changing technology is important for engineers. Education and training. A bachelor's degree in engineering is required for almost all entry-level engineering jobs. College graduates with a degree in a natural science or mathematics occasionally may qualify for some engineering jobs, especially in specialties in high demand. Most engineering degrees are granted in electrical, electronics, mechanical, or civil engineering. However, engineers trained in one branch may work in related branches. For example, many aerospace engineers have training in mechanical engineering. This flexibility allows employers to meet staffing needs in new technologies and specialties in which engineers may be in short supply. It also allows engineers to shift to fields with better employment prospects or to those that more closely match their interests. Most engineering programs involve a concentration of study in an engineering specialty, along with courses in both mathematics and the physical and life sciences. Many programs also include courses in general engineering. A design course, sometimes accompanied by a computer or laboratory class or both, is part of the curriculum of most programs. General courses not directly related to engineering, such as those in the social sciences or humanities, are also often required. In addition to the standard engineering degree, many colleges offer 2-year or 4-year degree programs in engineering technology. These programs, which usually include various hands-on laboratory classes that focus on current issues in the application of engineering principles, prepare students for practical design and production work, rather than for jobs that require more theoretical and scientific knowledge. Graduates of 4-year technology programs may get jobs similar to those obtained by graduates with a bachelor's degree in engineering. Engineering technology graduates, however, are not qualified to register as professional engineers under the same terms as graduates with degrees in engineering. Some employers regard technology program graduates as having skills between those of a technician and an engineer. Graduate training is essential for engineering faculty positions and many research and development programs, but is not required for the majority of entry-level engineering jobs. Many experienced engineers obtain graduate degrees in engineering or business administration to learn new technology and broaden their education. Many high-level executives in government and industry began their careers as engineers. About 1,830 programs at colleges and universities offer bachelor's degrees in engineering that are accredited by the Accreditation Board for Engineering and Technology (ABET), Inc., and there are another 710 accredited programs in engineering technology. ABET accreditation is based on a program's faculty, curriculum, and facilities; the achievement of a program's students; program improvements; and institutional commitment to specific principles of quality and ethics. Although most institutions offer programs in the major branches of engineering, only a few offer programs in the smaller specialties. Also, programs of the same title may vary in content. For example, some programs emphasize industrial practices, preparing students for a job in industry, whereas others are more theoretical and are designed to prepare students for graduate work. Therefore, students should investigate curriculums and check accreditations carefully before selecting a college. Admissions requirements for undergraduate engineering schools include a solid background in mathematics (algebra, geometry, trigonometry, and calculus) and science (biology, chemistry, and physics), with courses in English, social studies, and humanities. Bachelor's degree programs in engineering typically are designed to last 4 years, but many students find that it takes between 4 and 5 years to complete their studies. In a typical 4-year college curriculum, the first 2 years are spent studying mathematics, basic sciences, introductory engineering, humanities, and social sciences. In the last 2 years, most courses are in engineering, usually with a concentration in one specialty. Some programs offer a general engineering curriculum; students then specialize on the job or in graduate school. Some engineering schools have agreements with 2-year colleges whereby the college provides the initial engineering education, and the engineering school automatically admits students for their last 2 years. In addition, a few engineering schools have arrangements that allow students who spend 3 years in a liberal arts college studying pre-engineering subjects and 2 years in an engineering school studying core subjects to receive a bachelor's degree from each school. Some colleges and universities offer 5-year master's degree programs. Some 5-year or even 6-year cooperative plans combine classroom study and practical work, permitting students to gain valuable experience and to finance part of their education. Licensure. All 50 States and the District of Columbia require licensure for engineers who offer their services directly to the public. Engineers who are licensed are called professional engineers (PE). This licensure generally requires a degree from an ABET-accredited engineering program, 4 years of relevant work experience, and successful completion of a State examination. Recent graduates can start the licensing process by taking the examination in two stages. The initial Fundamentals of Engineering (FE) examination can be taken upon graduation. Engineers who pass this examination commonly are called engineers in training (EIT) or engineer interns (EI). After acquiring suitable work experience, EITs can take the second examination, the Principles and Practice of Engineering exam. Several States have imposed mandatory continuing education requirements for relicensure. Most States recognize licensure from other States, provided that the manner in which the initial license was obtained meets or exceeds their own licensure requirements. Many civil, electrical, mechanical, and chemical engineers are licensed PEs. Independent of licensure, various certification programs are offered by professional organizations to demonstrate competency in specific fields of engineering. Other qualifications.Engineers should be creative, inquisitive, analytical, and detail oriented. They should be able to work as part of a team and to communicate well, both orally and in writing. Communication abilities are becoming increasingly important as engineers frequently interact with specialists in a wide range of fields outside engineering. Certification and advancement.Beginning engineering graduates usually work under the supervision of experienced engineers and, in large companies, also may receive formal classroom or seminar-type training. As new engineers gain knowledge and experience, they are assigned more difficult projects with greater independence to develop designs, solve problems, and make decisions. Engineers may advance to become technical specialists or to supervise a staff or team of engineers and technicians. Some may eventually become engineering managers or enter other managerial or sales jobs. In sales, an engineering background enables them to discuss a product's technical aspects and assist in product planning, installation, and use. (See the statements under management and business and financial operations occupations, and the statement on sales engineers elsewhere in the Handbook.) Numerous professional certifications for engineers exist and may be beneficial for advancement to senior technical or managerial positions. Many certification programs are offered by the professional societies listed as sources of additional information for engineering specialties at the end of this statement. For the source and more detailed information concerning this subject, click on the related links section (U.S. Department of Labor) indicated below this answer box.
I haven't gotten around to repeating it yet. I've been so busy,
had so much homework, the dog ate it, etc.
Why are wind turbines three bladed when more blades should catch more wind?
the reason there is only three blades is because four blades would add weight and wind resistance, in some countries they use two or four bladed turbines though.
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How can I earn money online in mechanical engineering?
well you can do the ff:
1. Passive income - you can use internet and convince your friends and colleuge to sustain your quest.
2. Design - you can use the internet to promote your product by posting your telephone number.,
Advantage of critical damping over under damping and over damping?
A system that is critically damped will return to zero more quickly than an overdamped or underdamped system. Underdamping will result in oscillations for an extended period of time, and while overdamped things will return to zero without much (or any, I think) oscillations they will get there more slowly.
Deluge valves are hydraulically operated differential type valves used to control water supply to a deluge system. Deluge systems use open sprinklers or nozzles. Trim sets are used to control the operation of the valve.
Why not ultrasonic be produced by passing high frequency alternating current through speaker?
The ability of a speaker to produce ultrasonic output when driven with high frequency AC depends on the design (intent) of the speaker. Typical audio speakers are not designed to go ultrasonic - the cone's mass and resonate frequency just won't support it. Also, the coil reactance is too high for ultrasonic waves so they cannot be produced.
