MATERIALS TESTING MLV RIU TANTAL

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Collection of tasks for the discipline "Materials" (code MLV) card answers RIU
Task 1
Having examined the chapter 1.
Question 1. What is called black metal?
1) copper;
2) iron;
3) titanium;
4) magnesium;
5) zinc.
Question 2. Which metal is called soft?
1) nickel;
2) copper;
3) iron;
4) titanium;
5) zinc.
Question 3. What material is non-metals?
1) paper;
2) plastic;
3) tree;
4) concrete;
5) asphalt.
Question 4. What is a heavy metal?
1) magnesium;
2) sodium;
3) beryllium;
4) chrome;
5) The lithium.
Question 5. What metals are colored?
1) iron;
2) tungsten;
3) potassium;
4) aluminum;
5) cadmium.
Task 2
Having examined the chapter 1.
Question 1: What are the properties of metals to determine the thermal conductivity of the test?
1) the chemical;
2) mechanical;
3) physical;
4) technology;
5) special.
Question 2. What are the properties of metals is determined to break into the bend?
1) physical;
2) chemical;
3) technology;
4) special;
5) mechanical.
Question 3. What are the properties of metals determined by testing for resistance against corrosion?
1) technology;
2) special;
3) chemical;
4) physical;
5) mechanical.
Question 4: What are the properties of the metal is determined by compression tests?
1) specific;
2) technology;
3) chemical;
4) mechanical;
5) physical;
Question 5. What are the properties of metals determined by testing the durability?
1) physical;
2) technology;
3) mechanical;
4) special;
5) chemical.

Activity 3
Having examined the chapter 1.
Question 1. What is the metal has a body-centered cubic (bcc) crystal lattice?
1) magnesium;
2) α-iron;
3) titanium;
4) gold;
5) aluminum;
Question 2. Which metal is face-centered cubic (fcc) lattice?
1) tungsten;
2) γ-iron;
3) zinc;
4) sodium;
5) beryllium.
Question 3. Which metal has a hexagonal close-packed (hcp) lattice?
1) tantalum;
2) lead;
3) nickel;
4) magnesium;
5) potassium.
Question 4: What ensures the existence of the crystal lattice of metals?
1) electron "gas";
2) positively charged ions;
3) the valence electrons;
4) reacting the free electrons and positive ions?
5) The normal operating conditions of metal products.
Question 5. What has a greater influence on the properties of metals?
1) metallurgical defects;
2) stress concentrators located in metals;
3) point lattice defects;
4) linear defects (dislocations) of the crystal lattice;
5), surface defects of the crystal lattice.

Task 4
Explore Chapter 2.
Question 1. What is the driving force of the crystallization process?
1) the difference between the Gibbs energy (free energy) of the liquid and solid;
2) the rate of crystallization;
3) the number of nucleation;
4) presence of impurities;
5) the availability of short-range order of the atoms.
Question 2. What is called the primary crystallization of homogeneous metal or alloy?
1) a transition metal from solid to liquid state;
2) the transition metal from solid to gaseous state;
3) the transition metal in the amorphous state;
4) the transition metal from the liquid to the solid state;
5) the spontaneous transition of the pure metal from a liquid state to a solid to form the crystalline structure.
Question 3. What is the allotropic transformation?
1) the transition from liquid to solid;
2) the transition from solid to liquid state;
3) transformation of the crystal lattice in the solid state;
4) the ability of the metal in the solid state at the temperature to rebuild its crystal lattice;
5) a change in the properties and amount of metal.
Question 4. How many polymorphs has iron?
1) α, β, γ;
2) α, β;
3) α, γ;
4) β, γ;
5) α.
Question 5. What is the metal crystal structure is optimal

Additional information

Task 5
Explore chapter 3.
Question 1. What is a mechanical mixture?
1) wrought alloys;
2) uniform crystal in which atoms of one component are arranged in a crystal lattice of the other;
3) an alloy consisting of crystals of the individual components;
4) cast alloy;
5) a crystalline substance characterized by its properties of initial components.
Question 2. What is a solid solution?
1) an alloy consisting of crystals of the individual components;
2) crystalline substance characterized by its properties from the starting components;
3) cast alloy;
4) the homogeneous crystal in which atoms of one component located in the crystal lattice of the other;
5) wrought alloys.
Question 3. What is a chemical compound?
1) a crystalline substance which differ in their properties from the starting components;
2) wrought alloys;
3) an alloy consisting of crystals of the individual components;
4) cast alloy;
5) a uniform crystal in which atoms of one component located in the crystal lattice of another.
Question 4. What is called in metal phase?
1) a set of alloy components;
2) a homogeneous part of the system;
3) a limited portion of the system;
4) of the system, separated from the other parts of the system (phase) by the interface;
5) of the system, the crossing of the border which leads to an abrupt change in the composition or properties.
Question 5. What is called a phase diagram of the alloys?
1) The graphic display of alloys depending on their composition and temperature;
2) a graphical representation of equilibrium or non-equilibrium state of the alloys;
3) the original document to develop processes foundry, heat treatment and pressure treatment;
4) graphic portrayal of the state of the alloys at low speed cooling or prolonged heating;
5) a graphical display using cooling curves relationships between changes in temperature of the metal or alloy, and the time course of these changes.

Task 6
Explore chapter 3.
Question 1. Which line is the main feature of binary alloys diagrams 1 race?

1) BF;
2) DBE;
3) DH;
4) FK;
5) CK.



1) BF;
2) DBE;
3) DH;
4) FK;
5) CK.




Question 2. Which line chart called the liquidus line?

1) DB;
2) AB;
3) ABC;
4) DBE;
5) ABE.







Question 3. Which line chart called the solidus line?



1) AB;
2) DB;
3) ABC;
4) DBE;
5) ABE.





Question 4. What characterizes the binary alloys phase diagram III race?
1) components are infinitely soluble in each other in a liquid state;
2) the components in the solid state, solutions of limitation, the eutectic crystallization form;
3) the components of which do not form a chemical compound;
4) components which are soluble in the liquid state indefinitely, and solid - limited form ev tektiku;
5) the components which form the chemical compound.
Question 5: What structure is formed in the II region of the diagram?


1. E (Pb + Sb);
2.ZH + E (Pb + Sb);
3.Pb + E ((Pb + Sb);
4.E ((Pb + Sb) + Sb;
5.ZH + Pb.






Task 7
Explore Chapter 4.
Question 1. How are classified types of mechanical testing of metals?
1) the method of loading;
2) a method of melting;
3) a method of welding;
4) a process for the thermal effects;
5) by type testing machine.
Question 2. What is the main indicator of the strength?
1) The yield strength;
2) tensile strength;
3) the true tensile strength;
4) The yield strength;
5) the true tensile strength;
Question 3. What characterizes the hardness of the metal, defined indentation in
test body rigid indenter?
1) The strength of the metal;
2) resistance IU

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