Geas Engineering Materials

Front 1

What physical property of a material that refers to the temperature at which ferromagnetic materials can no longer be magnetized by outside forces?

Back 1

Curie point

Front 2

What physical property of a material refers to the amount of weight gain (%) experienced in a polymer after immersion in water for a specified length of time under a controlled environment?

Back 2

Water absorption

Front 3

What physical property of a material that refers to the rate of heat flow per unit time in a homogenous material under steady-state conditions per unit are, per unit temperature gradient in a direction perpendicular to area?

Back 3

Thermal conductivity

Front 4

What physical property of a material refers to the highest potential difference (voltage) that an insulting material of given thickness can withstand for a specified time without occurrence of electrical breakdown through its bulk?

Back 4

Dielectric strength

Front 5

What physical property of a material refers to the ratio of the amount of heat required to raise the temperature of a unit mass of a substance 1 degree to the heat required to raise the same mass of water to 1 degree.

Back 5

Specific heat

Front 6

What physical property of a material refers to the temperature at which a polymer under a specified load shows a specified amount of deflection?

Back 6

Heat distortion temperature

Front 7

In what special refining process of steel where molten metal is poured down a tundish (chute) into an ingot mold?

Back 7

Electron beam refining

Front 8

What term is used to describe a polymer that has rubberlike properties?

Back 8

Elastomer

Front 9

A large molecule with two alternating mers is called as _______.

Back 9

Coplymer or interpolymer

Front 10

Some polymetric materials such as epoxies are formed by strong primary chemical bonds called ________.

Back 10

Cross linking

Front 11

The property of metals that allows them to be drawn into thin wires beyond their elastic limit without being ruptured is called

Back 11

Malleability

Front 12

Interaction between the surface of two closely adjacent bodies which causes them to cling together is known as

Back 12

Adhesion

Front 13

Solids which break above the elastic limit are called

Back 13

Brittle

Front 14

The property of some elementary particles that causes them to exert force on one another is known as

Back 14

Charge

Front 15

The property which permits the flow of current under the action of a potential difference is called

Back 15

Conductance

Front 16

When a body is resistant to heat, it is called

Back 16

Thermoduric

Front 17

The property of fluids by virtue of which they offer resistance to flow is known as

Back 17

Viscosity

Front 18

The tendency of a body to return to its original size or shape after having been deformed is called

Back 18

Elasticity

Front 19

The emission of light by a material because of its high temperature is known as

Back 19

Incandescence

Front 20

Which of the following statements is correct concerning the passage of white light into a glass prism?

Back 20

The violet color travels slower than the red color

Front 21

Property of some pure metals and their alloys at extremely low temperatures of having negligible to the flow of an electric current is called

Back 21

Superconductivity

Front 22

The progressive decrease of a property as a result of repeated stress is called

Back 22

Fatigue

Front 23

If a materials is feebly repelled by a magnet it is

Back 23

Diamagnetic

Front 24

Emission of radiations from a substance during illumination by radiations of higher frequency is called

Back 24

Fluorescence

Front 25

The property of some crystals of absorbing light difference extents, thereby giving to the crystals different colors according to the direction of the incident light is known as

Back 25

Dichroism

Front 26

The property of an object that determines the direction of heat flow when in contact with another object is called

Back 26

Thernal conductivity

Front 27

The property of an object that determines the direction of heat flow when in contact with another object is called

Back 27

Temperature

Front 28

If the properties of a body are the same in all directions, it is called

Back 28

Isotropic

Front 29

The property of an isolated conductor to store electric charge is

Back 29

Capacitance

Front 30

The property by virtue of which a body resists any attempt to change its state of rest or motion is called

Back 30

Inertia

Front 31

What is the amount of energy required to fracture a given volume of material?

Back 31

Impact strength

Front 32

What mechanical property of a material which is a time-dependent permanent strain under stress?

Back 32

Creep

Front 33

What refers to the stress at which a material exhibits a specified deviation from proportionality of stress and strain?

Back 33

Yield strength

Front 34

The greatest stress which a material is capable of withstanding without a deviation from acceptable of stress to strain is called _______.

Back 34

Proportional unit

Front 35

What is the maximum stress below which a material can theoretically endure an infinite number of stress cycles?

Back 35

Endurance limit

Front 36

What is a substance that attracts piece of iron?

Back 36

Magnet

Front 37

Which of the following is a natural magnet?

Back 37

Lodestone

Front 38

What is the resistance of a material to plastic deformation?

Back 38

Hardness

Front 39

Which of the following materials has permeability slightly less than that of free space?

Back 39

Diamagnetic materials

Front 40

What materials has permeabilities slightly greater than of free space?

Back 40

Paramagnetic materials

Front 41

What is a method of forming polymer sheets or films into three-dimensional shapes, in which the sheets is clamped on the edge, heated until it soften and sags, drawn in contact with the mold by vacuum, and cooled while still in contact with the mold?

Back 41

Thermoforming

Front 42

What refers to the tendency for polymers and molecular material to form with an ordered spatial, three-dimensional arrangement of monomer molecules?

Back 42

Stereospecificity

Front 43

What is measure of rigidity?

Back 43

Modulus of elasticity

Front 44

What refers to the deterioration of material by oscillatory relative motion of small amplitude (20 to 100 µm) between two solid surfaces in a corrosive environment?

Back 44

Fretting corrosion

Front 45

What is a process for making glass-reinforced shapes that can be generate by polling resin-impregnated glass stands through a die?

Back 45

Continuous pultrusion

Front 46

What refers to the application of any process whereby the surface of steel is altered so that it will become hard?

Back 46

Casehardening

Front 47

What structure is formed when transformation occurs at temperatures down to the knee of the curve?

Back 47

Pearlite

Front 48

What is the purpose of molybdenum in steel alloying?

Back 48

To increase dynamic and high-temperature strength and hardness

Front 49

What field of study encompasses the procurement and production of metals?

Back 49

Metallurgy

Front 50

What is a process of producing a hard surface in a steel having a sufficiently high carbon content to respond to hardening by a rapid cooling of the surface?

Back 50

Flame hardening