Monday, August 30, 2010

Answers to Power Elements Part 2 - ME Board Exam Questions






Here are the answers to the questions on Power Elements Part 2 posted last August 9, 2010.

1. A reserve generating capacity that is in operation but not in service.
A. Hot reserve

2. Another term for Lower Heating Value (LHV).
C. Net Calorific Value

3. In a refrigeration system, it controls the flow of refrigerant manually.
C. Gate Valve

4. The ratio of the dynamic depression head to the total head of a pump.
A. Cavitation factor

5. A device used to determine the water level in the boiler.
D. Gauge cock

6. A device in the fuel system that mixes gasoline with air.
A. Carburetor

7. Comparing Diesel and Gasoline engines, which of the following is true?
D. Operating temperature of Diesel Engines are higher

8. Which of the following is true in pH value?
C. pH 7 represents neutral value

9. Reversible adiabatic expansion is at constant…
C. Entropy

10. The temperature at which vapor starts forming above the surface of liquid fuels.
B. Flash point

Link to Questions.

Note: Sorry for the delay. I was confused because of the volume of questions I am making so I thought I already posted the answer to this one.

For questions, corrections and suggestions please post a comment or email me at admin@tupmechanical.com.

Friday, August 27, 2010

Answers to Power and Industrial Plant Engineering Board Exam Review Questions






Below are the answers to the Part 3 of Power and Industrial Plant Engineering Questions posted last August 25, 2010.

1. Measure of relative hotness or coldness of a body.
D. Temperature

2. A device that automatically controls the speed of an engine.
D. Governor

3. When heat is added in a mixture of moisture and air, which of the following is true?
B. The absolute humidity remains the same

4. Adding a small amount of salt in water will…
A. Increase the boiling point

5. If the wet bulb and the dry bulb temperatures are the same, what can we say about the air in the space?
C. It is saturated

6. Which of the following scenario will increase the likelihood of cavitation in pumps?
D. The fluid temperature is raised

7. The indicator used to determine the anti-knock property of gasoline engines
A. Octane number

8. Which of the following is used to determine if there’s a halogen leak?
C. Halide torch

9. A valve that that allows the fluid to follow in one direction only
D. Check valve

10. The ratio of refrigerating effect to the work of compression
A. Coefficient of performance

Link to the questions.

For concerns, corrections, suggestions and other inquiries please let me know by posting a comment below or emailing me at admin@tupmechanical.com.

Wednesday, August 25, 2010

Power and Industrial Plant Engineering Questions Part 3 - Mechanical Board Exam Reviewer






This is the third part of Mechanical Engineering board exam review questions in Power and Industrial Plant Engineering.

Instruction: Choose the BEST answer.

1. Measure of relative hotness or coldness of a body.
a. heat
b. Absolute temperature
c. Relative humidity
d. Temperature

2. A device that automatically controls the speed of an engine.
a. Rotameter
b. Tachometer
c. Speedometer
d. Governor

3. When heat is added in a mixture of moisture and air, which of the following is true?
a. The wet bulb temperature decreases
b. The absolute humidity remains the same
c. The dry bulb temperature decreases
d. The relative humidity increases

4. Adding a small amount of salt in water will…
a. Increase the boiling point
b. Decrease the boiling point
c. The boiling point will remain the same
d. The freezing point will not change

5. If the wet bulb and the dry bulb temperatures are the same, what can we say about the air in the space?
a. It is completely dry
b. It has a low relative humidity
c. It is saturated
d. The thermometers are not working

6. Which of the following scenario will increase the likelihood of cavitation in pumps?
a. Smooth finished impellers
b. Velocity at the suction is lowered
c. The edges of the inlet portion are generously rounded
d. The fluid temperature is raised

7. The indicator used to determine the anti-knock property of gasoline engines
a. Octane number
b. Cetane number
c. Avogadro’s number
d. Degree API

8. Which of the following is used to determine if there’s a halogen leak?
a. Soap water solution
b. Sulfur candle test
c. Halide torch
d. Sulfur torch

9. A valve that that allows the fluid to follow in one direction only
a. Globe Valve
b. Expansion valve
c. Gate Valve
d. Check valve

10. The ratio of refrigerating effect to the work of compression
a. Coefficient of performance
b. Performance Factor
c. Refrigeration Efficiency
d. Thermal efficiency

Answers can be found here.

Monday, August 23, 2010

Answers to ME Laws Board Exam Review Questions






Here are the answers to the questions in Mechanical Engineering Laws in the Philippines posted last August 21, 2010.

1. Prior to Republic Act 8495, what law governs the practice of mechanical engineering the Philippines?
B. Commonwealth Act No. 294

2. If the rated scores of an examinee in a board exam are 85, 82, and 48 in Math, Power, and Design subjects respectively (average: 72.85%), what will be the overall result?
B. Fail
Section 18

3. Which of the following is NOT a required qualification for being a member of the Board of Mechanical Engineering (BME)?
B. Naturalized or born Filipino citizen
Section 5

4. A foreign mechanical engineer may only be allowed to practice mechanical engineering in the Philippines if his country also allows Filipino mechanical engineers practice under similar provisions like those in RA8495. This policy is also known as
a. A. Foreign Reciprocity
Section 39

5. According to RA 8495, where will the budget to implement Mechanical Engineering Law come from?
C. National Budget
Section 44

6. A plant with rated capacity 500 kW requires with 3 shifts…
C. At least three (3) registered mechanical engineer or Professional Mechanical engineer, one per shift
Section 33

7. Who has the power to revoke or suspend license to practice mechanical engineering in the Philippines?
B. Board of Mechanical engineering
Section 27

8. An applicant who fails to pass the examination for the third time shall be allowed to take another examination only after the lapse of ____
D. One year
Section 20

9. In addition to the administrative sanctions imposed under RA8495 any person who violates any of the provisions of this Act and its rules and regulations shall, upon conviction be penalize by a fine of not less _______ nor more than Two hundred thousand pesos (P200,000.00).
A. 50, 000 pesos
Section 42

10. Minimum requirement in teaching mechanical engineering subjects in universities and colleges in the Philippines
B. Masters Degree in Mechanical Engineering
Section 48

Link to questions

For concerns, corrections, suggestions and other inquiries please let me know by posting a comment below or emailing me at admin@tupmechanical.com.

Saturday, August 21, 2010

Board Exam Review: ME Laws Questions






Here are some questions in ME laws in the Philippines based on RA 8495.

Instruction: Choose the BEST answer.

1. Prior to Republic Act 8495, what law governs the practice of mechanical engineering the Philippines?
a. Republic Act No. 5124
b. Commonwealth Act No. 294
c. Commonwealth Act No. 293
d. Republic Act No. 2934

2. If the rated scores of an examinee in a board exam are 85, 82, and 48 in Math, Power, and Design subjects respectively (average: 72.85%), what will be the overall result?
a. Pass
b. Fail
c. Removal exam
d. Deferred

3. Which of the following is NOT a qualification for being a member of the Board of Mechanical Engineering (BME)?
a. Must be at least thirty-five (35) years of age
b. Naturalized or born Filipino citizen
c. Has never been convicted of any offense involving moral turpitude
d. A Professional Mechanical Engineer with a valid professional license and an active practitioner as such, for not less than ten (10) years prior to his appointment

4. A foreign mechanical engineer may only be allowed to practice mechanical engineering in the Philippines if his country also allows Filipino mechanical engineers practice under similar provisions like those in RA8495. This policy is also known as
a. Foreign Reciprocity
b. Foreign Reciprocality
c. Foreign engineer exchange
d. Foreign affairs

5. According to RA 8495, where will the budget to implement Mechanical Engineering Law come from?
a. Local Budget
b. Foreign funding
c. National Budget
d. From members of PSME

6. A plant with rated capacity 500 kW requires with 3 shifts…
a. At least one(1) registered mechanical engineer or Professional Mechanical engineer for all three shifts
b. At least two(2) registered mechanical engineer or Professional Mechanical engineer for all three shifts
c. At least three(3) registered mechanical engineer or Professional Mechanical engineer, one per shift
d. At least four (4) registered mechanical engineer or Professional Mechanical engineer, one per shift plus one (1) as a buffer

7. Who has the power to revoke or suspend license to practice mechanical engineering in the Philippines?
a. Any PSME official
b. Board of Mechanical engineering
c. PSME president and chairman
d. PRC chairman

8. An applicant who fails to pass the examination for the third time shall be allowed to take another examination only after the lapse of ____
a. Two years
b. Six months
c. One year and six moths
d. One year

9. In addition to the administrative sanctions imposed under RA8495 any person who violates any of the provisions of this Act and its rules and regulations shall, upon conviction be penalize by a fine of not less _______ nor more than Two hundred thousand pesos (P200,000.00).
a. 50, 000 pesos
b. 75, 000 pesos
c. 100, 000 pesos
d. 150, 000 pesos

10. Minimum requirement in teaching mechanical engineering subjects in universities and colleges in the Philippines
a. Doctoral Degree related to mechanical engineering
b. Masters Degree in Mechanical Engineering
c. Registered Mechanical engineer
d. Graduate of Mechanical engineering course

Answers can be seen here.

Friday, August 20, 2010

ANSWERS to Materials and Heat Treatment Part 3 - ME Board Exam Review






Here are the answers to the board exam review questions in Materials and Heat Treatment part 3 posted last August 17, 2010.

1. A special alloy of lead and tin that is commonly used in bearing applications.
B. Monel

2. It is the load-bearing characteristics of a material under relative motion.
D. Lubricity

3. Annealing in such a way that some or all of the carbon is precipitated as graphite.
A. Graphitizing

4. It is used to designate the relatively soft central portion of certain hardened tool steels.
A. Core

5. It is the prolonged heating of a metal at a selected temperature.
D. Soaking

6. In heat treatment process, it is the critical or transformation point at which pearlite structure is transformed into austenite structure.
B. Decalescence point

7. A case- hardening process whereby steel is heated in a carbon rich environment.
C. Carburizing

8. A term used to refer to the product of the blast furnace and is made by the reduction of iron ore.
A. Pig iron

9. It is a type of steel that owes its distinctive properties chiefly to the carbon it contains.
C. Carbon steels

10. It is the deterioration of a material or its properties due to its chemical reaction with the environment.
C. corrosion

Link to the questions.

If there's something wrong on any of the answer, I would appreciate if you could bring that out for me. You can email (admin@tupmechanical.com) or just put a comment.

Tuesday, August 17, 2010

Materials and Heat Treatment – Board Exam Review Part 3






Here is the third set of review questions for Mechanical Engineer Board Exam in the topic: materials and heat treatment terms and elements.

1. A special alloy of lead and tin that is commonly used in bearing applications.
a. Stellite
b. Monel
c. Babbitt
d. Inconel

2. It is the load-bearing characteristics of a material under relative motion.
a. Strength
b. Toughness
c. Resilience
d. Lubricity

3. Annealing in such a way that some or all of the carbon is precipitated as graphite.
a. Graphitizing
b. Spheroidizing
c. Age Hardening
d. Precipitation Hardening

4. It is used to designate the relatively soft central portion of certain hardened tool steels.
a. Core
b. Nucleus
c. Centro
d. Heart

5. It is the prolonged heating of a metal at a selected temperature.
a. Annealing
b. Tempering
c. Age hardening
d. Soaking

6. In heat treatment process, it is the critical or transformation point at which pearlite structure is transformed into austenite structure.
a. Recalescence point
b. Decalescence point
c. Incandescence point
d. Phosphorescence point

7. A case- hardening process whereby steel is heated in a carbon rich environment.
a. Nitriding
b. Carbonitriding
c. Carburizing
d. Carbonizing

8. A term used to refer to the product of the blast furnace and is made by the reduction of iron ore.
a. Pig iron
b. Cast Iron
c. Nodular Cast iron
d. Wrought Iron

9. It is a type of steel that owes its distinctive properties chiefly to the carbon it contains.
a. Carburized Steels
b. Alloy Steels
c. Carbon steels
d. Cast Steel

10. It is the deterioration of a material or its properties due to its chemical reaction with the environment.
a. abrasion
b. wear
c. corrosion
d. galling

Answers can be found here.

Saturday, August 14, 2010

ANSWERS to Mathematics Elements and Terminologies-Board Exam Review






Here are the answers to the questions on Mathematics Terminologies posted last August 11, 2010.

1. The _____of a number are numbers that when multiplied with each other gives the value of the number.
C. Factors

2. The _____ of a set of numbers is the smallest whole number factor that is common to all of them.
B. Least Common Multiple

3. In the algebraic expression X-2, what is the minuend?
B. 2

4. What mathematical property is demonstrated by this equation: a (b+c) = ab+ac?
C. Distributive property

5. In ratio and proportion, the first and last terms in a proportion are called _______.
B. Extremes

6. The rectangular coordinate system is also known as
A. Cartesian Coordinate system

7. It is a series of numbers in which each consecutive term differs from the preceding one by a fixed amount
D. Arithmetic progression

8. Which of the following should be used in calculating the volume of the revolution of an area?
A. Pappus Rule
B. Guldinus Rule

9. Which of the following is used in determining the area of an irregular shape?
D. Simpson’s Rule

10. It is a general formula used to find the volume of any prism, pyramid or frustum of a pyramid.
C. Prismoidal Formula

Link to the questions

For any question, clarifications, and corrections, please feel free to comment or email me at admin@tupmechanical.com.

Wednesday, August 11, 2010

Mathematics Elements and Terminologies-Board Exam Review






Here are some questions on Mathematics terminologies (elements).
1. The _____of a number are numbers that when multiplied with each other gives the value of the number.
a. Multipliers
b. Least Common Multiple
c. Factors
d. Roots

2. The _____ of a set of numbers is the smallest whole number factor that is common to all of them.
a. Multipliers
b. Least Common Multiple
c. Factor
d. Roots

3. In the algebraic expression X-2, what is the minuend?
a. X
b. 2
c. -2
d. X-2

4. What mathematical property is demonstrated by this equation: a (b+c) = ab+ac?
a. Closure Property
b. Associative property
c. Distributive property
d. Commutative property

5. In ratio and proportion, the first and last terms in a proportion are called _______.
a. Means
b. Extremes
c. Outliers
d. Outer layer

6. The rectangular coordinate system is also known as
a. Cartesian Coordinate system
b. Polar coordinate system
c. Spherical coordinate system
d. Cylindrical coordinate system

7. It is a series of numbers in which each consecutive term differs from the preceding one by a fixed amount
a. Progression
b. Constant progression
c. Geometric progression
d. Arithmetic progression

8. Which of the following should be used in calculating the volume of the revolution of an area?
a. Pappus Rule
b. Guldinus Rule
c. Prismoidal Formula
d. Simpson’s rule

9. Which of the following is used in determining the area of an irregular shape?
a. Pappus Rule
b. Guldinus Rule
c. Prismoidal Formula
d. Simpson’s Rule

10. It is a general formula used to find the volume of any prism, pyramid or frustum of a pyramid.
a. Pappus Rule
b. Guldinus Rule
c. Prismoidal Formula
d. Simpson’s Rule

Answers can be found here.

Monday, August 9, 2010

Mechanical Engineering Review Questions: Power Elements Part 2






Here’s the second part of the questions on Power Plant and Industrial Plant Engineering terminologies.

1. A reserve generating capacity that is in operation but not in service.
a. Hot reserve
b. Firm power
c. Prime power
d. Spinning reserve

2. Another term for Lower Heating Value (LHV).
a. Gross Calorific Value
b. Least Calorific Value
c. Net Calorific Value
d. Actual Calorific Value

3. In a refrigeration system, it controls the flow of refrigerant manually.
a. Float Valve
b. Capillary tube
c. Gate Valve
d. Expansion valve

4. The ratio of the dynamic depression head to the total head of a pump.
a. Cavitation factor
b. Load factor
c. Draw down
d. Static suction lift

5. A device used to determine the water level in the boiler.
a. Fusible plug
b. hydrometer
c. Bourdon gage
d. Gauge cock

6. A device in the fuel system that mixes gasoline with air.
a. Carburetor
b. Condenser
c. Injection pump
d. Piston

7. Comparing Diesel and Gasoline engines, which of the following is true?
a. Operating temperature of Gasoline Engines are higher
b. Additive lube oils should not be used in Gasoline engines
c. Soot production in Diesel engines are lesser
d. Operating temperature of Diesel Engines are higher

8. Which of the following is true in pH value?
a. pH value has no relationship with the Hydrogen-ion concentration
b. pH value of 5-6 are usually kept in boiler waters
c. pH 7 represents neutral value
d. pH value is not an important consideration in boiler operation

9. Reversible adiabatic expansion is at constant…
a. Temperature
b. Pressure
c. Entropy
d. Volume

10. The temperature at which vapor starts forming above the surface of liquid fuels.
a. Pour point
b. Flash point
c. Fire point
d. Kindling point

Answer will be posted after 2 days.

Answers to Materials and Heat Treatment Board Exam Review Questions






Here are the answers to the second set of board exam review questions on the topic: Materials and Heat Treatment posted last August 6, 2010.

1. An alloy of copper and nickel.
B. Monel

2. A light and non-magnetic metal with a better strength-to-weight ratio than any other metal at room temperature, and is used in corrosive environment applications.
B. Titanium

3. A heat treatment process that promotes uniformity of structure and properties of steel.
C. Normalizing

4. A heat treatment process that reduces internal stresses, caused by machining, cold working, or welding.
B. Stress Relieving

5. A heat treatment process used to soften the steel for improved machinability and improve or restore ductility for subsequent forming operations.
A. Annealing

6. The ability of certain materials to absorb vibrations.
C. Damping Capacity

7. Materials that have the same structure at all points are said to be…
D. Homogeneous

8. These are flexible materials that can be stretched up to about double their length at room temperature and can return to their original length when released.
D. Elastomers

9. It is a measure of the amount of light transmitted through a given material under specific conditions.
A. Opacity

10. Major alloying element of stainless steels.
C. Chromium

Link to the questions.

For questions, corrections and suggestions please post a comment or email me at admin@tupmechanical.com.

Friday, August 6, 2010

Answers to Board Exam Review Questions: Power Elements






Here are the answers to the questions in Power and Industrial Plant Engineering topic posted last August 5, 2010.


1. It is an apparatus used to obtain the volumetric chemical composition of the gaseous by-products of combustion.
B. Orsat analyzer

2. A term used to refer to a concrete foundation formed by continuous pouring of cement and letting the entire mass dry as one unit.
D. Monolithic foundation

3. In power plants, if you want to measure small differences in pressures, what is the best instrument to use?
C. Manometer

4. Which of the following is not a major function of air-conditioning?
D. Control the mass of air in the space

5. This material is used to seal the piston rod to prevent leakage from the pump.
B. Packing

6. You want to know the grindability of coal, what apparatus you should use?
A. Hardgrove apparatus

7. It is a straight line that indicates the relationship between steam consumption and the turbo-generator load.
C. Willans line

8. The period of time for one half of the mass of radioactive material to disintegrate.
D. Half life

9. In power plant engineering, what do you call the power intended to be available even under emergency situations.
A. Firm power

10. In nuclear power plants, what do you call the enclosure usually made of concrete or lead that absorbs any leakage of radiation from the reactor?
B. Biological shield

For concerns, corrections, suggestions and other inquiries please let me know by posting a comment below or emailing me at admin@tupmechanical.com.

Mechanical Board Exam Review: Materials and Heat Treatment Part 2






Here’s the second part of the set of questions on Materials and Heat Treatment. The purpose of this is to help examinees review for the upcoming mechanical engineer board exam.

Instruction: Choose the BEST answer.

1. An alloy of copper and nickel.
a. Babbitt
b. Monel
c. Inconel
d. Stellite

2. A light and non-magnetic metal with a better strength-to-weight ratio than any other metal at room temperature, and is used in corrosive environment applications.
a. Nickel
b. Titanium
c. Tantalum
d. Aluminum

3. A heat treatment process that promotes uniformity of structure and properties of steel.
a. Annealing
b. Stress Relieving
c. Normalizing
d. Quenching

4. A heat treatment process that reduces internal stresses, caused by machining, cold working, or welding.
a. Annealing
b. Stress Relieving
c. Normalizing
d. Quenching

5. A heat treatment process used to soften the steel for improved machinability and improve or restore ductility for subsequent forming operations.
a. Annealing
b. Stress Relieving
c. Normalizing
d. Quenching

6. The ability of certain materials to absorb vibrations.
a. Toughness
b. Modulus of rupture
c. Damping Capacity
d. Endurance strength

7. Materials that have the same structure at all points are said to be…
a. Orthotropic
b. Isotropic
c. Anisotropic
d. Homogeneous

8. These are flexible materials that can be stretched up to about double their length at room temperature and can return to their original length when released.
a. Rubber
b. Elastics
c. Polymers
d. Elastomers
9. It is a measure of the amount of light transmitted through a given material under specific conditions.
a. Opacity
b. Translucency
c. Transference
d. Transmissibility

10. Major alloying element of stainless steels.
a. Vanadium
b. Nickel
c. Chromium
d. Cobalt

Answers will be posted after 2 days.

Thursday, August 5, 2010

Mechanical Engineering Review Questions: Power Elements Part 1






Here are some questions BASED from the previous board exams of Mechanical Engineers on the subject Power and Industrial Plant Engineering.

Instruction: Choose the BEST answer.

1. It is an apparatus used to obtain the volumetric chemical composition of the gaseous by-products of combustion.
a. Bourdon Gage
b. Orsat analyzer
c. Manometer
d. Calorimeter

2. A term used to refer to a concrete foundation formed by continuous pouring of cement and letting the entire mass dry as one unit.
a. Composite foundation
b. Reinforced concrete foundation
c. Foundation
d. Monolithic foundation

3. In power plants, if you want to measure small differences in pressures, what is the best instrument to use?
a. Bourdon gage
b. Sphygmomanometer
c. Manometer
d. Orsat analyzer

4. Which of the following is not a major function of air-conditioning?
a. Control the temperature
b. Control the humidity
c. Control the air movement
d. Control the mass of air in the space

5. This material is used to seal the piston rod to prevent leakage from the pump.
a. seal
b. Packing
c. Shield
d. Glue

6. You want to know the grindability of coal, what apparatus you should use?
a. Hardgrove apparatus
b. mortar and pestle
c. hammer
d. shovel

7. It is a straight line that indicates the relationship between steam consumption and the turbo-generator load.
a. Saturation line
b. Super heated line
c. Willans line
d. Williams line

8. The period of time for one half of the mass of radioactive material to disintegrate.
a. Life
b. Curie
c. Becquerel
d. Half life

9. In power plant engineering, what do you call the power intended to be available even under emergency situations.
a. Firm power
b. Prime power
c. Cold reserve
d. Hot reserve

10. In nuclear power plants, what do you call the enclosure usually made of concrete or lead that absorbs any leakage of radiation from the reactor?
a. Thermal shield
b. Biological shield
c. Geiger shield
d. Radioactive barrier

Answers will be posted after 2 days.

Wednesday, August 4, 2010

Answers to Mechanical Engineering Review Questions in Materials and Heat Treatment Part I






Here are the answers to the questions on Materials and Heat Treatment topic posted last August 3, 2010.

1. A term referring to steels that has been deoxidized completely.
B. Killed steel


Rimmed steels are incompletely deoxidized.

2. Because of physical or chemical changes, some metals lose their ductility. What term refers to this process?
A. Embrittlement

3. This is a property of some materials that enables them to accommodate huge deformation without breaking/rupture.
B. Plasticity

4. A type of cast iron in which most of the Carbon is chemically combined with iron.
B. White Cast Iron


Or sometimes called White Iron

5. Substances that wear other substances that is softer than itself.
A. Abrasive

6. An aluminum ore.
D. Bauxite

7. The most commonly used material for springs.
D. Music wire

8. The referring to the brittleness of steel while it is red hot
C. Red shortness

9. Materials that has the same properties in all directions.
A. Isotropic materials

10. Alloyed with steel, this material promotes fine grain structure and improved the ratio of endurance strength to ultimate strength.
D. Vanadium

Tuesday, August 3, 2010

Mechanical Engineering Review Questions: Materials and Heat Treatment Part 1






September board exam for this year is coming fast. As you may have heard from your coaches and review center teachers, it’s time to focus on the terminologies in mechanical engineering. Terms commonly referred to as “elements” comprise the majority of questions given in Mechanical Engineering board exams. For this reason, I have prepared questions on the topic: Materials and Heat Treatment.

The questions were taken from commonly used Handbooks and Textbooks in Mechanical Engineering.

Instruction: Choose the BEST answer.

1. A term referring to steels that has been deoxidized completely.
a. Rimmed Steel
b. Killed steel
c. Deoxidized steel
d. Cold steel

2. Because of physical or chemical changes, some metals lose their ductility. What term refers to this process?
a. Embrittlement
b. Hardening
c. Red shortness
d. Cold shortness

3. This is a property of some materials that enables them to accommodate huge deformation without breaking/rupture.
a. Malleability
b. Plasticity
c. Ductility
d. Toughness

4. A type of cast iron in which most of the Carbon is chemically combined with iron.
a. Nodular Cast
b. White Cast Iron
c. Pig Iron
d. Gray Iron

5. Substances that wear other substances that is softer than itself.
a. Abrasive
b. Corrosive
c. Sandpaper
d. Sandstone

6. An aluminum ore.
a. Hematite
b. Magnetite
c. Corundum
d. Bauxite

7. The most commonly used material for springs.
a. Hard Drawn
b. Stainless Steel
c. Chrome-Vanadium
d. Music wire

8. The referring to the brittleness of steel while it is red hot
a. Cold Shortness
b. Hot shortness
c. Red shortness
d. White Shortness

9. Materials that has the same properties in all directions.
a. Isotropic materials
b. Homogeneous materials
c. Heterogeneous materials
d. Orthotropic materials

10. Alloyed with steel, this material promotes fine grain structure and improved the ratio of endurance strength to ultimate strength.
a. Sulfur
b. Silicon
c. Cobalt
d. Vanadium

Answers to be posted after 2 days.