Test 2
Which one of the following is the correct formula for computing the splitting tensile strength from a splitting tensile strength test? A. 2P/(pi*l*d) B. (2*pi*P)/(l*d) C. P/(2*pi*l*d) D. (Pi*P)/(2*l*d) (Note: P+maximum applied load before failure; d=diameter of specimen; I=length of specimen)
A. 2P/(pi*l*d)
Which one of the following is the correct formula for computing the splitting tensile strength from a splitting tensile test? A. 2P/(pi*l*d) B. 2piP/(l*d) C. P/(2*pi*l*d) D. piP/(2*l*d) (Note: P=maximum applied load before failure; d= diameter of specimen; l=length of specimen.)
A. 2P/(pi*l*d)
If a concrete has an ultimate flexural strength of 650 psi, which is the endurance limit in flexural likely to be? A. 325 psi B. 450 psi C. 300 psi D. 130 psi
A. 325 psi
Which one of the following is correct formula for computing the flexural strength from a beam test using center point loading? A. 3PL/(2*b*d^2) B. PL/(b*d^2) C. P/bd D. 2P/(pi*L*d) (Note: P=maximum applied load before failure; d= height of cross-section of beam; b=width of cross-section; L=length from support to support of beam in test)
A. 3PL/(2*b*d^2)
Which one of the following is the correct formula for computing the flex URL's strength from a beam test using center point loading? A. 3PL/(2*b*d^2) B. PL/(b*d^2) C. P/(b*d) D. 2P/(pi*L.*d) (Note: P= maximum applied load before failure; d= height of cross-section of beam; b=width of cross-section of beam; L=length from support to support of beam in test)
A. 3PL/(2*b*d^2)
What are the typical tensile strength and elastic modulus of the plastic ABS? A. 6,000 and 300,000 psi B. 6,000 and 3,000,000 psi C. 1,000 and 100,000 psi D. 1,000 and 3,000,000 psi
A. 6,000 and 300,000 psi
What are the typical tensile strength and elastic modulus of the plastic Acrylonitrile-Butadiene-Styrene (ABS)? A. 6,000 and 300,000 psi B. 6,000 and 1,000,000 psi C. 1,000 and 300,00 psi D. 1,000 and 100,000 psi
A. 6,000 and 300,000 psi
The typical tensile strength and elastic modulus of PMMA (or PLexiglass) are, respectively: A. 8,000 and 300,00 psi B. 8,000 and 3,000,000 psi C. 1,000 psi and 300,00 psi D. 1, 000 psi and 30,000 psi
A. 8,000 and 300,00 psi
What are the typical tensile strength and elastic modulus of the plastic PMMA (or Plexiglass)? A. 8,000 and 300,000 psi B. 1,000 and 1,000,000 psi C. 1,000 and 100,000 psi D. 1,000 and 1,000,000 psi
A. 8,000 and 300,000 psi
What are the typical tensile strength and elastic modulus of PMMA? A. 8,000 and 350,000 psi B. 8,000 and 3,500,000 psi C. 800 and 350,000 psi D. 800 and 3,500,00 psi
A. 8,000 and 350,000 psi
What are the typical tensile strength and elastic modulus of PMMA? A. 8,000 and 350,000 psi B. 8,000 and 3,500,000 psi C. 800 and 350,000 psi D. 800 and 3,500,000 psi
A. 8,000 and 350,000 psi
The most important alloying element used in stainless steel is A. Chromium B. Copper C. Zinc D. Tungsten
A. Chromium
The first commercial plastic is A. Bakelite B. Plexiglass C. Fiberglass D. PVC
A. Bakelite
Which one of the following statements is true regarding the properties of ASTM A36 steel? A. It has a yield strength of 36 ksi B. It has an elastic modulus of 36,000,000 psi C. It has a carbon content of 0.36% D. It has a specific gravity of 3.6
A. It has a yield strength of 36 ksi
Which one of the following methods is not effective in controlling the corrosion of steel structure? A. Passivation B. Paint coating C. Galvanizing D. Impressed current catholic protection
A. Passivation
Which one of the following methods is not effective in reducing the corrosion rate of steel? A. Passivation B. Organic coating C. Impressed Current Catholic protection D. Sacrificial anode
A. Passivation
Which one of the following statements in not true concerning the difference between plastics and concrete? A. Plastics generally have a lower coefficient of thermal expansion than concrete B. Plastics generally have a higher tensile strength than concrete C. Plastics generally have a lower elastic modulus to tensile strength ratio than concrete D. Plastics generally have a higher ductility than concrete.
A. Plastics generally have a lower coefficient of thermal expansion than concrete
Which one of the following statements is true concerning the difference between plastics and concrete? A. Plastics generally have a lower elastic modulus than concrete B. Plastics generally have a lower tensile strength than concrete C. Plastics generally have a lower coefficient of thermal expansion than concrete D. Plastics generally have a lower ductility than concrete
A. Plastics generally have a lower elastic modulus than concrete
The main purpose of adding antioxidant to plastics is A. To reduce the rate of hardening due to heat or UV light B. To increase flexibility C. Too increase strength D. To increase fire resistance
A. To reduce the rate of hardening due to heat or UV light
What is the main purpose of adding anti-oxidant to plastic? A. To reduce the rate of hardening with time of the plastic B. To make the plastic more flexible C. To make the plastic more fire resistant D. To increase the hardness of the plastic
A. To reduce the rate of hardening with time of the plastic
What is the main purpose of adding antioxidant to plastic? A. To reduce the rate of hardening with time of the plastic B. To make the plastic more flexible C. To make the plastic more fire resistant D. To increase the hardness of the plastic
A. To reduce the rate of hardening with time of the plastic
Which of the following alloying elements is most commonly used in making cutting-tool steel? A. Tungsten B. Nickel C. Molybdenum D. Chromium
A. Tungsten
Which one of the following is true concerning the effects of work hardening on steel? A. Work hardening increases the hardness B. Work hardening increases the toughness. C. Work hardening reduces the yield strength D. Work hardening increases the ductility
A. Work hardening increases the hardness
Which one of the following ferrous irons most likely has the lowest carbon content? A. Wrought iron B. Structural steel C. Gray cast iron D. Ductile cast iron
A. Wrought iron
Brass is an alloy of copper and... A. Zinc B. Nickel C. Tin D. Aluminum
A. Zinc
What is the basic difference between the usages of the Brunel and Rockwell hardness tests? A. Brinell test is run on structural steel, while Rockwell test is run on high strength steel B. Brinell test requires a larger test specimen C. Results from the Brunel test can be used to estimate the ultimate strength of a metal, while it cannot be done using the results from the Rockwell test D. Brinell test results are more reliable than Rockwell test results
B. Brinell test requires a larger test specimen
Which one of the following statements is not true concerning the factors affecting the strength of wood? A. Higher density gives higher strength B. Higher growth rate of tree gives higher strength C. Higher moisture gives lower strength D. Wood is stronger in the direction parallel to grain than in the direction perpendicular to grain.
B. Higher growth rate of tree gives higher strength
Which one of the following is the main function of limestone in the blast-furnace process in the production of iron? A. It acts as a fuel B. It acts as a fluxing agent to get rid of impurities such as sulfur in the iron ore. C. It reduces the required temperature needed in the blast-furnace process. D. It provides part of the iron produced.
B. It acts as a fluxing agent to get rid of impurities such as sulfur in the iron ore.
Which one of the following is a function of limestone in the production of iron in the blast-furnace process? A. It provides additional fuel B. It helps to get rid of impurities such as sulfur in the iron ore C. It reduces the temperature needed in the blast-furnace process D. It provides additional iron
B. It helps to get rid of impurities such as sulfur in the iron ore
What is the main effect of adding antioxidant to plastics? A. It increases the flame resistance B. It reduces the rate of hardening (or oxidation) C. It increases the toughness D. It increases the ductility
B. It reduces the rate of hardening (or oxidation)
What is the composition of an AISI 1040 steel? A. Stainless steel with .4% carbon B. Plain carbon steel with .4% carbon C. Plain carbon steel with 1.04% carbon D. Nickel alloy steel with .4% carbon
B. Plain carbon steel with .4% carbon
What is the most common usage of zinc in steel structures? A. To increase the toughness of steel B. To Protect the steel from corrosion. C. To increase the hardness of steel D. To make steel easier to be welded on
B. To Protect the steel from corrosion.
The main purpose of adding plastics is A. To. Reduce the rate of hardening due to heat or UV light B. To increase flexibility C. To increase strength D. To increase fire resistance
B. To increase flexibility
What is the most common usage of zinc in steel structures? A. To increase the toughness of steel B. To protect steel from corrosion C. To Increase the hardness of steel D. To make steel easier to be welded on
B. To protect steel from corrosion
What is the most common usage of zinc in steel structures? A. To increase the toughness of steel B. To protect steel from corrosion C. To increase the hardness of steel D. To make steel easier to be welded on
B. To protect steel from corrosion
What is the most common usage of zinc in steel structures? A. To increase the toughness of steel B. To protect steel from corrosion C. To increase the hardness of steel D. To make steel easier to be welded on.
B. To protect steel from corrosion
What is the most common usage of zinc in steel structures? A. To increase the toughness of steel B. To protect steel from corrosion C. To increase the hardness of steel D. To make steel easier to be welded on
B. To protect steel from corrosion
What is the main reason why a plywood must have odd number of veneers instead of even number of veneers? A. To equalize strength in both directions B. To reduce warping due to moisture effect C. To have adequate thickness D. To be resistant to freezing and thawing effects
B. To reduce warping due to moisture effect
What condition(s) must be satisfied in a thermal stress analysis? A. Deformations must be compatible B. Forces must be in equilibrium C. Deformations must be compatible, and forces must be in equilibrium D. The computed tensile stresses must be equal to the computed compressive stresses in magnitude
C. Deformations must be compatible, and forces must be in equilibrium
What can the results of the Brunel and Rockwell tests be used for besides indication of hardness of the metals tested? A. Estimation of toughness B. Estimation of ductility C. Estimation of ultimate strength D. Estimation of elastic modulus
C. Estimation of ultimate strength
What is can the results of the Brunell and Rockwell tests be used for, besides indication of hardness of the metals tested? A. Estimation of toughness B. Estimation of ductility C. Estimation of ultimate strength D. Estimation of elastic modulus
C. Estimation of ultimate strength
What is can the results of the Brunell and Rockwell tests be used for, besides indication of hardness of the metals tested? A. Estimation of toughness B. Estimation of modulus of resilience C. Estimation of ultimate strength D. Estimation of failure strain or ductility
C. Estimation of ultimate strength
Which of the following statements is not true regarding the effects of carbon content on properties of steel? A. High carbon content gives high yield strength B. High carbon content gives high Brunel hardness number C. High carbon content gives high ductility D. High carbon content gives high ultimate strength
C. High carbon content gives high ductility
Which one of the following statements is not true regarding the characteristics of AISI 1045 steel? A. It is a plain carbon steel B. It has elastic modulus of 29,000,00 psi C. It has a carbon content of 4.5% D. It has a specific gravity of 7.9.
C. It has a carbon content of 4.5%
Which one of the following manufactured wood products is usually used as a less expensive substitute for plywood in housing construction? A. Laminated veneer Lumber B. Laminated Strand Lumber C. Oriented Strand Board D. Particle Board
C. Oriented Strand Board
Which one of the following statements is not true concerning the difference between plastics and concrete? A. Plastics generally have a higher coefficient of thermal expansion than concrete B. Plastics generally have a higher tensile strength than concrete C. Plastics generally have a higher elastic modulus to tensile strength ratio than concrete D. Plastics generally have a higher ductility than concrete
C. Plastics generally have a higher elastic modulus to tensile strength ratio than concrete
Which one of the following statements in not true concerning the differences between plastics and concrete? A. Plastics generally have a lower elastic modulus than concrete. B. Plastics generally have a higher tensile strength than concrete C. Plastics generally have a lower coefficient of thermal expansion than concrete. D. Plastics generally have a lower density than concrete
C. Plastics generally have a lower coefficient of thermal expansion than concrete.
Which one of the following statements is true concerning the differences between plastics and metals? A. Plastics have a higher elastic modulus to strength ratio than metals B. Plastics have a lower coefficient of thermal expansion C. Plastics have higher creep deformation under load D. Plastics have higher electric conductivity
C. Plastics have higher creep deformation under load
Which one of the following strengths of wood would most likely have the highest values? A. Compressive strength parallel to the grain B. Compressive strength perpendicular to the grain C. Tensile parallel to the grain D. Tensile Strength perpendicular to the grain
C. Tensile parallel to the grain
Which of the following ferrous metals has the least amount of carbon in it? A. Structural steel B. White cast iron C. Wrought iron D. High strength steel
C. Wrought iron
Which of the following ferrous metals has the lowest amount of carbon in it? A. Structural steel B. White cast iron C. Wrought iron D. High strength steel
C. Wrought iron
Which of the following ferrous metals has the lowest percentage of carbon in it? A. Structural steel B. WHite cast iron C. Wrought iron D. High strength steel
C. Wrought iron
Which one of the following ferrous metals has the lowest percentage of carbon in it? A. Gray cast iron B. White cast iron C. Wrought iron D. High Strength steel
C. Wrought iron
Which one of the following is not a main raw material for production of iron in the blast-furnace process? A. Limestone B. Iron Ore C. Coke D. Blast-Furnace slag
D. Blast-Furnace slag
Which of the following alloying elements is most commonly used in making stainless steel? A. Tungsten B. Nickel C. Molybdenum, D. Chromium
D. Chromium
Which of the following alloying elements is used in stainless steel? A. Tungsten B. Nickel C. Molybdenum D. Chromium
D. Chromium
Which one of the following alloying elements is used to make stainless steel? A. Manganese B. Nickel C. Molybdenum D. Chromium
D. Chromium
Which of the following ferrous metals has the highest amount of carbon in it? A. Structural steel B. Wrought iron C. High-strength steel D. Gray cast iron
D. Gray cast iron
If a piece of wood is dried from its fiber saturation point to over-dry condition, which one of the following shrinkage strains of wood would have the lowest value? A. Volumetric B. Radial C. Tangential D. Longitudinal
D. Longitudinal
What are the function(s) of coke in the blast-furnace process in the production oof iron? A. Provides energy B.Provides carbon monoxide C. Provides CaO and energy D. Provides both energy and carbon monoxide
D. Provides both energy and carbon monoxide
Which one of the following statements is not true regarding the effects of work hardening on properties of steel? A. Work hardening increases the yield strength B. Work hardening increases the Brunel Hardness number. C. Work hardening decreases the ductility D. Work Hardening increases the toughness
D. Work Hardening increases the toughness
Which of the following statements is true regarding the effects of work hardening on properties of steel? A. Work hardening decreases the yield strength B. Work hardening decreases the Brunel hardness number C. Work hardening increases the ductility D. Work hardening decreases the toughness
D. Work hardening decreases the toughness
Which of the following statements is not true regarding the effects of work hardening on properties of steel? A. Work hardening increases the yield strength B. Work hardening creases the Brunel hardness number C. Work hardening decreases the Ductility D. Work hardening increases the toughness
D. Work hardening increases the toughness