CSWIP 3.1 Welding Multiple Choice Exam Quiz!
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Hey, are you looking for CSWIP 3.1 welding multiple choice practice exam questions and answers? If so, take up this quiz and test your understanding of the same. CSWIP stands for Certification Scheme for Weldment Inspection Personnel. It was established in the year 1969. If you wish to pass this test, then you must possess the abilities and experience to meet up the criteria. This practice test will examine how prepared you are for this exam. Good luck to you!
- 1.
Deflection of the arc by magnetic forces that can make welding difficult to control is commonly known as:
- A.
Arc initiation
- B.
Arc misalignment
- C.
Arc blow
- D.
Arc constriction
Correct Answer
C. Arc blowExplanation
Arc blow is the deflection of the arc by magnetic forces that can make welding difficult to control. When welding, magnetic fields can be created due to the flow of current, and these magnetic fields can cause the arc to deviate from its intended path. This can lead to erratic and unstable welding, making it challenging for the welder to maintain control over the process. Therefore, the term "arc blow" is commonly used to describe this phenomenon.Rate this question:
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- 2.
Which of the following electrode types is classified as BS EN 499?
- A.
E 38 3 R
- B.
E 6013
- C.
E 7018 - G
- D.
E 51 33 B
Correct Answer
A. E 38 3 RExplanation
The correct answer is E 38 3 R. According to the question, the electrode type that is classified as BS EN 499 is E 38 3 R.Rate this question:
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- 3.
Which type of electrode is used for stovepipe welding for overland pipeline construction?
- A.
Rutile
- B.
Cellulosic
- C.
High recovery rutile
- D.
Acid-rutile
Correct Answer
B. CellulosicExplanation
Cellulosic electrodes are used for stovepipe welding in overland pipeline construction. Cellulosic electrodes have a high cellulose content in their coating, which produces a thick and easily removable slag. This slag helps to protect the weld pool from atmospheric contamination and provides excellent penetration. Cellulosic electrodes also have a deep, narrow arc that allows for better control and maneuverability during welding. They are commonly used for pipeline welding due to their ability to produce strong and reliable welds in various positions and conditions.Rate this question:
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- 4.
The three main types of MMA electrodes used for welding C and C-Mn steels are:
- A.
Basic, cellulosic and rutile
- B.
Neutral, cellulosic and rutile
- C.
Basic, cellulosic and neutral
- D.
Rutile, low hydrogen and basic
Correct Answer
A. Basic, cellulosic and rutileExplanation
The correct answer is Basic, cellulosic and rutile. These are the three main types of MMA (Manual Metal Arc) electrodes used for welding C (carbon) and C-Mn (carbon-manganese) steels. Basic electrodes are designed for welding high-strength steels and provide excellent mechanical properties. Cellulosic electrodes are used for all-position welding and provide deep penetration and good arc stability. Rutile electrodes are versatile and suitable for a wide range of applications, offering good welding performance and easy slag removal.Rate this question:
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- 5.
A WPS may specify a maximum width for individual weld beads (the weave width) when welding C-Mn steels. if the width is exceeded it may cause:
- A.
Lack of inter-run fusion
- B.
A reduction in HAZ toughness
- C.
Lack of sidewall fusion
- D.
Too low a deposition rate
Correct Answer
B. A reduction in HAZ toughnessExplanation
Exceeding the maximum width for individual weld beads may result in a reduction in heat-affected zone (HAZ) toughness. The HAZ is the area surrounding the weld where the base metal's microstructure is altered due to the heat of welding. If the weld bead width is too large, it can lead to excessive heat input and slower cooling rates in the HAZ. This can cause the formation of coarse grains and potentially reduce the toughness of the HAZ, making it more susceptible to cracking or brittle fracture.Rate this question:
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- 6.
You notice that MMA electrodes with the flux covering removed are being used as filler rods for TIG welding. This should not be allowed because:
- A.
It is wasteful
- B.
The rod diameter may be too large
- C.
The weld metal composition may be wrong
- D.
The rod is too short
Correct Answer
C. The weld metal composition may be wrongExplanation
Using MMA electrodes with the flux covering removed as filler rods for TIG welding should not be allowed because the weld metal composition may be wrong. MMA electrodes are designed specifically for shielded metal arc welding (SMAW), where the flux covering plays a crucial role in providing protection and controlling the composition of the weld metal. Removing the flux covering can lead to improper alloying elements and impurities in the weld, resulting in weak or defective welds. Therefore, it is important to use filler rods specifically designed for TIG welding to ensure the correct weld metal composition.Rate this question:
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- 7.
In TIG welding, what is the benefit of a current slope-out device? It reduces...
- A.
Tungsten spatter
- B.
Risk of crater cracking
- C.
Risk of arc strikes
- D.
Interpass temperature
Correct Answer
B. Risk of crater crackingExplanation
A current slope-out device in TIG welding helps reduce the risk of crater cracking. Crater cracking is a common issue in TIG welding where cracks form at the end of a weld due to the rapid cooling of the molten metal. By gradually reducing the welding current at the end of the weld using a current slope-out device, the cooling process is slowed down, allowing the metal to solidify more evenly and reducing the risk of cracks forming.Rate this question:
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- 8.
Which type of power source characteristic is normally used for manual welding?
- A.
Constant Voltage
- B.
Flat Characteristic
- C.
Constant Current
- D.
A Motor Generator
Correct Answer
C. Constant CurrentExplanation
Constant current is the type of power source characteristic that is normally used for manual welding. In manual welding, the current needs to remain constant throughout the process to ensure consistent and controlled heat input. Constant current power sources provide a stable and steady current output, allowing the welder to have better control over the welding process. This characteristic is preferred for manual welding as it helps in achieving desired weld quality and prevents overheating or distortion of the workpiece.Rate this question:
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- 9.
In MMA, welding penetration is principally controlled by:
- A.
Arc voltage
- B.
Welding speed
- C.
Ferro-silicon in the electrode coating
- D.
Current
Correct Answer
D. CurrentExplanation
In MMA (Manual Metal Arc) welding, the penetration of the weld is mainly controlled by the current. The higher the current, the greater the heat generated, leading to deeper penetration. The current determines the amount of energy transferred to the electrode, which in turn affects the melting and fusion of the base metal. Therefore, adjusting the current is crucial in achieving the desired depth and quality of penetration in MMA welding.Rate this question:
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- 10.
Pipe bores of some materials must be purged with argon before and during TIG welding in order to:
- A.
Prevent linear porosity
- B.
Prevent burn-through
- C.
Prevent oxidation of the root bead
- D.
Eliminate moisture pick-up in the root bead.
Correct Answer
C. Prevent oxidation of the root beadExplanation
During TIG welding, purging the pipe bores with argon helps to prevent oxidation of the root bead. When the pipe bores are purged with argon, it creates an inert atmosphere that displaces oxygen. This is important because oxygen can react with the hot metal, leading to oxidation and the formation of unwanted oxides. By preventing oxidation of the root bead, the quality of the weld is improved, ensuring a strong and durable joint.Rate this question:
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- 11.
The chemical composition of the weld metal deposited by a C-Mn steel MMA electrode is usually controlled by:
- A.
Core wire composition
- B.
Additions in the flux coating
- C.
Iron powder in the flux coating
- D.
Dilution from the base material
Correct Answer
B. Additions in the flux coatingExplanation
The chemical composition of the weld metal deposited by a C-Mn steel MMA electrode is usually controlled by additions in the flux coating. The flux coating contains various elements and compounds that are added to the electrode to influence the composition of the weld metal. These additions can include alloying elements, deoxidizers, and stabilizers, among others. The flux coating melts during the welding process and reacts with the base metal, resulting in a weld metal with a desired chemical composition and properties. The core wire composition, iron powder in the flux coating, and dilution from the base material can also have some influence on the weld metal composition, but it is primarily the additions in the flux coating that control it.Rate this question:
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- 12.
Silicon is added to steel and the covering of MMA electrodes in order to:
- A.
Provide deoxidation
- B.
Improve strength
- C.
Improve toughness
- D.
Provide more resistance to hydrogen cracking.
Correct Answer
A. Provide deoxidationExplanation
Silicon is added to steel and the covering of MMA electrodes to provide deoxidation. Deoxidation is the process of removing oxygen from the steel, which helps improve the overall quality and properties of the steel. By adding silicon, it reacts with the oxygen present in the steel and forms silicon dioxide, which is a stable compound. This helps prevent the formation of undesirable oxides in the steel, ensuring a cleaner and more homogeneous material.Rate this question:
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- 13.
A Fusible insert for TIG welding helps:
- A.
Reduce porosity
- B.
Give controlled root penetration
- C.
Avoid the need for a back purge
- D.
By acting as a backing for the root run
Correct Answer
B. Give controlled root penetrationExplanation
A fusible insert for TIG welding helps in giving controlled root penetration. This means that it allows for precise control over the depth and penetration of the weld at the root. This is important because it ensures that the weld is strong and secure, as well as preventing any potential defects such as lack of fusion or incomplete penetration. By providing this controlled root penetration, the fusible insert helps to achieve a high-quality weld with optimal strength and integrity.Rate this question:
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- 14.
According to AWS 2.4 a weld symbol for the other side is placed:
- A.
Above the dashed line
- B.
Below the dashed line
- C.
Above the solid line
- D.
Below the solid line
Correct Answer
C. Above the solid lineExplanation
In AWS 2.4, a weld symbol for the other side is placed above the solid line. This indicates that the welding is to be done on the side that is opposite to the side shown in the drawing. Placing the symbol above the solid line helps to clearly indicate the location and direction of the weld on the other side of the joint.Rate this question:
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- 15.
The term low hydrogen electrode is often used for certain electrodes. What type of covering will they have?
- A.
Cellulosic
- B.
Rutile
- C.
Acid
- D.
Basic
Correct Answer
D. BasicExplanation
The term "low hydrogen electrode" refers to a type of electrode that is designed to minimize the amount of hydrogen that is produced during the welding process. These electrodes typically have a basic covering, which means that they contain a high concentration of basic compounds, such as calcium carbonate or calcium fluoride. The basic covering helps to neutralize any hydrogen that is produced, preventing it from causing defects in the weld. This type of electrode is commonly used for welding high-strength steels and other materials that are susceptible to hydrogen-induced cracking.Rate this question:
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- 16.
A Hydrogen controlled MMA electrode can always be recognized by the:
- A.
EN code letter (or AWS code number)
- B.
Electrode length
- C.
Trade name
- D.
Color of the covering
Correct Answer
A. EN code letter (or AWS code number)Explanation
A Hydrogen controlled MMA electrode can always be recognized by the EN code letter (or AWS code number). The EN code letter or AWS code number indicates the specific type and characteristics of the electrode, including the level of hydrogen control. This information is crucial in selecting the appropriate electrode for a particular welding application, as hydrogen control is important in preventing hydrogen-induced cracking and ensuring the quality of the weld. The electrode length, trade name, and color of the covering may vary among different manufacturers and types of electrodes, but the EN code letter or AWS code number remains consistent as a reliable identifier.Rate this question:
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- 17.
Which of the following units is used to express heat input?
- A.
Joules
- B.
N/mm2
- C.
J/mm2
- D.
KJ/mm
Correct Answer
D. KJ/mmExplanation
The unit KJ/mm is used to express heat input. Joules is a unit of energy, N/mm2 and J/mm2 are units of pressure, and KJ/mm is a unit of heat input. Heat input refers to the amount of heat energy transferred into a system or material.Rate this question:
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- 18.
Which of the following elements is added to steel to give resistance to creep at elevated service temperatures?
- A.
Nickel
- B.
Manganese
- C.
Molybdenum
- D.
Aluminum
Correct Answer
C. MolybdenumExplanation
Molybdenum is added to steel to provide resistance to creep at elevated service temperatures. Creep is the gradual deformation of a material under constant stress at high temperatures. Molybdenum enhances the high-temperature strength and stability of steel, making it more resistant to deformation and ensuring its structural integrity in demanding conditions. Nickel, manganese, and aluminum may have other beneficial effects on steel properties, but they do not specifically contribute to resistance against creep at elevated temperatures.Rate this question:
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- 19.
Nick break and fillet fracture tests are used for assessing:
- A.
Weld quality
- B.
Weld metal ductility
- C.
Weld metal toughness
- D.
Resistance to fracture
Correct Answer
A. Weld qualityExplanation
The Nick break and fillet fracture tests are used for assessing weld quality. These tests help determine the strength and integrity of a weld by examining the presence of any cracks or fractures. By conducting these tests, one can evaluate the overall quality of the weld and ensure that it meets the required standards.Rate this question:
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- 20.
Which of the following steels is considered non-magnetic?
- A.
18% Cr, 8% Ni
- B.
2.25Cr 1Mo
- C.
9%Cr, 1Mo
- D.
9%Ni
Correct Answer
A. 18% Cr, 8% NiExplanation
The steel with 18% Cr and 8% Ni is considered non-magnetic because it contains a high amount of nickel, which has a strong effect on reducing the magnetic properties of the steel. Nickel is a non-magnetic material, and when added to steel in significant amounts, it can create a non-magnetic alloy. Therefore, the presence of 18% Cr and 8% Ni in the steel composition makes it non-magnetic.Rate this question:
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- 21.
Weld spatter during MMA welding is most likely to be caused by:
- A.
Excessive current
- B.
Incorrect baking and storage of electrodes
- C.
Bad batch of electrodes
- D.
Too low an OCV
Correct Answer
A. Excessive currentExplanation
Excessive current is the most likely cause of weld spatter during MMA welding. When the current is too high, it leads to an excessive amount of molten metal being produced, which can result in spatter. The excessive heat generated by the high current causes the molten metal to splatter and scatter around the weld area, creating spatter. This can negatively affect the quality and appearance of the weld, as well as increase the risk of weld defects. Therefore, it is important to ensure that the current used during MMA welding is properly controlled to prevent excessive spatter.Rate this question:
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- 22.
A qualified Welding Procedure Specification is used to:
- A.
Give instruction to the welder
- B.
Give information to the welder
- C.
Give confidence that welds will have the specified properties.
- D.
All of the above
Correct Answer
D. All of the aboveExplanation
A qualified Welding Procedure Specification serves multiple purposes. It provides instructions to the welder, guiding them on how to perform the welding process correctly. It also gives important information to the welder, such as the materials to be used, welding parameters, and any special considerations. Additionally, a qualified Welding Procedure Specification instills confidence that the resulting welds will possess the specified properties, ensuring that they meet the required quality standards. Therefore, all of the given options are correct.Rate this question:
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- 23.
An arc strike (stray flash) on a steel component is regarded by some codes as unacceptable because:
- A.
It will cause copper contamination
- B.
It may cause hard spots
- C.
It may give cracking
- D.
Both B and C
Correct Answer
D. Both B and CExplanation
An arc strike on a steel component is considered unacceptable because it may cause hard spots and cracking. Hard spots occur when the heat from the arc strike causes localized hardening of the steel, leading to reduced ductility and potential failure under stress. Cracking can also result from the intense heat of the arc strike, causing the steel to become brittle and susceptible to fractures. Therefore, both these outcomes make arc strikes undesirable and against the codes.Rate this question:
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- 24.
In a transverse tensile test brittleness would be indicated if:
- A.
There is a reduction in cross-section at the position of fracture
- B.
The fracture surface is flat and featureless but has a rough surface
- C.
Fracture occurred in the weld metal
- D.
The fracture face shows beach marks
Correct Answer
B. The fracture surface is flat and featureless but has a rough surfaceExplanation
In a transverse tensile test, brittleness is indicated when the fracture surface is flat and featureless but has a rough surface. This suggests that the material failed abruptly and without significant plastic deformation. The absence of any reduction in cross-section or beach marks indicates that the fracture occurred in a brittle manner, with minimal energy absorption or deformation before failure.Rate this question:
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- 25.
The surface of a fatigue crack will:
- A.
Be rough and torn
- B.
Have sharp chevron markings
- C.
Be smooth
- D.
Have shear lips
Correct Answer
C. Be smoothExplanation
The surface of a fatigue crack is smooth because the crack propagates through the material in a progressive manner, causing minimal deformation and tearing of the surrounding material. As the crack grows, it creates a smooth fracture surface without any significant roughness or tearing. This smooth surface is a characteristic feature of fatigue cracks and distinguishes them from other types of fractures that may exhibit rough and torn surfaces.Rate this question:
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- 26.
What does the number 141 refer to when it is written next to the tail when using symbols?
- A.
WPS number
- B.
Welding process
- C.
Filler material
- D.
Acceptance Standard
Correct Answer
B. Welding processExplanation
The number 141 refers to the welding process when it is written next to the tail when using symbols. This number is used to specify the specific welding process that should be used for a particular application. Each welding process is assigned a unique number, and the number 141 corresponds to a specific welding process.Rate this question:
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- 27.
The current/polarity used for TIG welding of all materials except aluminum and magnesium is:
- A.
DC negative
- B.
DC positive
- C.
AC
- D.
Square wave AC
Correct Answer
A. DC negativeExplanation
The correct answer is DC negative. TIG welding, also known as Gas Tungsten Arc Welding (GTAW), is a process used for welding various materials. DC negative polarity means that the electrode (tungsten) is connected to the negative terminal of the power source, while the workpiece is connected to the positive terminal. This configuration provides better control over the welding process, as it allows for deeper penetration and improved stability of the arc. However, when welding aluminum and magnesium, AC or square wave AC polarity is used to prevent overheating and ensure better arc stability.Rate this question:
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- 28.
A typical temperature range for baking basic coated electrodes is:
- A.
150-200ºC
- B.
200-250ºC
- C.
300-350ºC
- D.
400-450ºC
Correct Answer
C. 300-350ºCExplanation
A typical temperature range for baking basic coated electrodes is 300-350°C. This temperature range is necessary to remove any moisture or contaminants from the electrode's coating, ensuring optimal performance during welding. Baking at lower temperatures may not effectively remove all moisture, leading to poor weld quality. On the other hand, baking at higher temperatures can cause the coating to deteriorate, reducing the electrode's effectiveness. Therefore, the recommended temperature range of 300-350°C strikes a balance between moisture removal and maintaining the integrity of the electrode's coating.Rate this question:
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- 29.
If welding travel speed is doubled but the current and voltage remain the same the heat input will be:
- A.
Reduced by 50%
- B.
Increased by a factor of two
- C.
About the same
- D.
Reduced by approximately 25%
Correct Answer
A. Reduced by 50%Explanation
When welding travel speed is doubled but the current and voltage remain the same, the heat input is reduced by 50%. This is because heat input is directly proportional to the welding travel speed. When the travel speed is doubled, the time the heat is applied to the material is halved, resulting in a 50% reduction in heat input.Rate this question:
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Jun 17, 2024Quiz Edited by
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Feb 14, 2014Quiz Created by
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