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Mechanical engineering combines engineering physics and mathematics principles with materials science in order to design, analyze, manufacture, and maintain mechanical systems.
Volumetric Mass Density
A material's property is an intensive property of some material, i.e. a physical property that does not depend on the amount of the material. These quantitative properties may be used as a metric by which the benefits of one material versus another can be compared, thereby aiding in materials selection.
Volumetric Mass Density
The density of a substance is its mass per unit volume. The density of a material varies with temperature and pressure.
Angular momentum is the rotational equivalent of linear momentum. It is an important quantity in physics because it is a conserved quantity - the total angular momentum of a closed system remains constant.
Thermal expansion is the tendency of matter to change its shape, area, volume, and density in response to a change in temperature. Not taking this into consideration can cause serious damage on structures.
Thermodynamics deals with heat, work, and temperature, and their relation to energy, radiation, and physical properties of matter. It describes how thermal energy is converted to and from other forms of energy, e.g. how gasoline is converted to car movement using mechanical heat engines.
An electric motor is an electrical machine that converts electrical energy into mechanical energy.
Electricity is the flow of electric charge. It is the primary source of energy that powers all sizes of machines, from smart watches to electric cars.
A synchronous electric motor is an AC motor in which, at steady state, the rotation of the shaft is synchronized with the frequency of the supply current. Synchronous motors are used from small factor machines where precise constant speed is needed, to higher power industrial sized machines where high efficiency is required.
A force is any interaction that, when unopposed, will change the motion of an object. A force can cause an object with mass to change its velocity.
A lever is a simple machine that is used for amplifying an input force to provide a greater output force.
Recommended Job Roles
These are the job roles that we recommend for the Mechanical Engineering online test.