Entc - Study guides, Class notes & Summaries

ENTC 281 test 2A highly toxic, colorless, odorless gas is named - correct answer CO Carbon monoxide. Combustible liquids are those with flash points at or above - correct answer 38C Name three natural materials that may be more toxic than plastics. - correct answer Cobalt, nickel, silica. Silk, wood, wool. Name three broad categories of hazards in working with industrial materials. - correct answer Biomechanical Hazards Chemical Hazards Physical Hazards The overheating of ? pl...

Exam 2 ENTC 207 Question and answers already passed 2023/2024Tool Steels - correct answer - Steels that do work to other steels (Working tools) - High alloy and carbon content - Expensive - Made in smaller lots with more controls - Cleanliness extremely critical - Not many made by many companies (limited accessibility Tool Steel Categories - correct answer - Letter and Number - Cold working - Shock Resisting - Hot working

ENTC 281 exam 2 Question and answers 2023/2024 verified to pass additives - correct answer use to improve of extend the properties of plastics antistatic agents - correct answer static charges may be dissipated by the addition of ? four types of colorants - correct answer dyes, organic pigments, inorganic pigments, special-effects pigments dyes - correct answer which colorant dissolves into the plastics material?

ENTC 281 Question and answers already passed 2023/2024 Why was machine manufacture of horn combs often unsuccessful? - correct answer Pieces of horn were not flat or uniform in thickness. Why weren't daguerreotype cases made from horn or horn powders? - correct answer Horn does not flow easily and consequently it does not pick up fine details in a mold Casein comes from - correct answer Milk curd Moderately nitrated

ENTC Test 402 LiquidWhich one of the following conditions will affect the rate and the extent a liquid penetrant will enter cracks, fissures and other small openings - correct answer The surface condition of the specimen being tested Which of the following is commonly used as a classification for penetrant - correct answer Post emulsifiable penetrant A generally accepted method for removing excess nonwatery washable penetrant is - correct answer wiping and cautiously cleaning the test spec...

Entc 206- Test 2 Question and answers 2023/2024 verified to passPolymer - correct answer is a substance composed of molecules with large molecular mass made up of repeating structural units, or monomers, connected by covalent chemical bonds. Synthetic - correct answer describing a substance that has been made artificially thru chemical synthesis; one that does not come from a natural source. Synthetic Polymers - correct answer Fiber, Plastics, Elastomers (or Rubber), protective Coating,...

ENTC 207 Exam 3 Question and answers correctly solved 2023/2024 Gray Cast Iron - correct answer Has graphite flakes in it, 2-4% total carbon at least 1% silicon, High dampening capacity, Should not be welded Malleable cast iron - correct answer Best suited for small, thin wall parts ductile cast iron - correct answer very good ductility, magnetic, dampens sound, low notch sensitivity Columnar structure dendrites form on a cold wall of the mold - correct answer if it is well insulated t...

ENTC 207 Exam 1 Questions with complete solution 2023/2024 Ferromagnetism - correct answer ability of a material to be attracted to a magnet ASTM - correct answer American Society for Testing and Materials ISO - correct answer International Standards Organization Composition - correct answer elemental makeup of a material Microstructure - correct answer the internal and surface features of a material that can be seen under optical or other magnification

ENTC 181 Exam 1Orthographic Projection - correct answer 2D coordinate system, that draws convection (lines and circles). Orthographic lines are __ D lines - correct answer 2 Main lines are_____ to the x and y axis in orthographic projections - correct answer parallel Third-Angle Projections - correct answer are multiple views allow better visualization and clarification of an object Third-Angle Projections - correct answer has a top, bottom, left, right and front view Technic...

ENTC 402 MagneticMagnetic particle is a nondestructive testing method used for - correct answer locating surface and near surface discontinuities in steel Ferromagnetic material is - correct answer strongly attracted by a magnet The permeability of a material describes: - correct answer the ease with which it can be magnetized The retentivity of a material describes - correct answer the ability to retain the magnetic field Magnetic particles are available in different colors - c...