Mechanical Engineering Questions

___________ are better insulators that liquids and solids

substances ________ as they are heated, decreasing density

True or False: warmer objects always heat cooler objects

raditation can be _______________ or ________________

an object with a ____ ____ _____ need very LITTLE energy to change the temp.

does mass increase as thermal energy increases

the more kinetic energy molecules have the ___________ the temp and the _________ the molecules move

an object with a _____ _____ _____ needs A LOT of energy to change the temp.

True or False:Forging is the oldest of the metal forging operations

_____• Take a large tool and die• Exert several tons of force very quickly• Press metal objects into the shape you want

Stamping: at normal temperature, a metal sheet is pressed on a stamping press machine by a stamping die to cause separation or ____

True or False:clay, binders or resins are used for EPC molds; the sand is just loose and unbonded

when gravity die casting in the ______ method a permanent mold is coated in advance of casting, coating composed of; carrier-water, binder-sodium silicate, refractory-talc, clay etc. coating

True or False:Cold Forging: typically refers to forging at or near room temperature- it requires more mechanical energy

True or False:Hot forging increases the mechanical energy required to form the metal

Forging is traditionally a ___working process, but many types are performed ___

_______ is the process of producing a casting that is free from voids or shrinkage defects by feeding molten metal into the part as it cools

_____ are foreign particles or contaminants(sand, oxides, dross) that become trapped in thecasting material during the pouring process.Inclusions can lead to weak spots and affect itscasting integrity

Metal stamping is a _____ process that makes use of dies and stamping presses to form sheet metal.

True or False:Sand molding is the oldest form of casting.