Quizzes 0% 172 Created on April 08, 2023 Welding Quiz - 1 Welding Quiz - 1 1 / 10 When TIG welding austentic stainless steel pipe, argon gas backing is called for: Prevent oxidation Prevent underbead cracking Prevent porosity Control the penetration bead shape 2 / 10 When open site working, serious porosity in metal arc welds is brought to your attention. What would you investigate? Electrode type Power plant type Electrode stroage Day temperature 3 / 10 When 'hydrogen control' is specified for a maual metal arc welding project the electrode would normally be: Cellulose Iron Oxide Acid Basic 4 / 10 In UK practice, BS499 specifies that the drawing dimension quoted for a fillet weld is the: Leg Length Throat thickness Weld width Actual throat thickness 5 / 10 You notice manual metal arc electrodes, stripped of flux, are being used as filler wire for TIG welding. You would object because: It is too expensive The wire would be too thick The metal composition may be wrong The wire is too short 6 / 10 You would certainly recognise a hydrogen controlled flux covered electrode from its: Colour Length Trade Name BS639/AWS code letter 7 / 10 The steel composition in a structural contract is changed from 0.15% carbon 0.6% manganese, to 0.2% carbon 1.2% manganese. This might influence the incidence of: Porosity Cracking in the weld area Undercut for fillet welds Lack of fusion defects 8 / 10 One of the following alloys is non-magnetic. which one? 4.0% chromium molybdenum 12.0% chromium Austentic stainless steel 9.0% nickel steel 9 / 10 Pre-heating a carbon steel manual metal arc welding is carried out to minimise the risk of: Scattered porosity Worm hole porosity Parent metal cracking Lack of penetration 10 / 10 When manual metal arc welding is being carried out on an open construction site, which group of welders are most likely to require continuous monitoring: Concrete shuttering welding teams Pipe welding teams Plate welders Plant maintenance welders Your score isThe average score is 53% LinkedIn Facebook VKontakte 0% Restart quiz 0% 313 Created on September 28, 2022 Radiography Quiz - 2 QUIZ-2 1 / 10 The unit of activity is sievert Becquerel Gray none of the above 2 / 10 The energy of gamma rays from iridium 192 is equal to cesium 137 gamma energy greater than cobalt 60 gamma ray less than cobalt 60 gamma energy none of the above 3 / 10 Depleted uranium is used in some radiography cameras because it is a good shielding material a low density material and so light cheap and easily available none of the above 4 / 10 The project area of the target of an X ray tube is called focal spot focus effective focal spot Geometric unsharpness 5 / 10 When radiation removes an electron from an atom , the process is called a good shielding material a low density material and so light cheap and easily available none of the above 6 / 10 The half life of a radioactive source is one half of the total life of the source the period in which the energy of the source becomes half the period in which the activity of the source becomes half none of the above 7 / 10 When radiation removes an electron from an atom , the process is called pair production ionization biological damage none of the above 8 / 10 The atomic number of an element is the number of electrons in the atom the number of protons in the nucleus of the atom the total number of proton and neutrons in the nucleus of the atom the number of neutrons in an atom 9 / 10 Isotope of an element differ in their mass number atomic number electron number none of the above 10 / 10 Co-59 becomes Co-60 , when it is placed in a nuclear reactor , where it captures electrons protons neutrons Atoms Your score isThe average score is 53% LinkedIn Facebook VKontakte 0% Restart quiz 0% 265 Created on September 14, 2022 Radiography Quiz QUIZ-1 1 / 10 radioactivity of 1 Bq corresponds to 3.7 x 1010 disintegrations per second 1 x 1010 disintegrations per second 3.7 x 1004 disintegrations per second none of the above 2 / 10 1 Curie is equivalent of 001 milli Ci 1000 milli Ci 100 Mega Ci .000001 micro Ci 3 / 10 The concentration of the radioactive material in a gamma source is referred to as the specific activity of the source the quality of the source the atomic weight of the source the half life of the source 4 / 10 to radiograph a 175 mm thick steel plate , which of the following gamma ray sources would be used. cobalt-60 thulium – 170 Iridium -192 cesium – 137 5 / 10 The radiation quality of a gamma ray source is Determined by the size of the focal spot Determined by the curie of the source Determined by the type of isotope involved Can be verified by the operator 6 / 10 the emission of alpha radiation from a radioisotope leads to a daughter product with change in mass number change in atomic number change in atomic and mass number none of the above 7 / 10 a radioisotope and stable isotope of an element differ in their mass number atomic number chemical property none of the above 8 / 10 A radioisotope which undergoes 3.7 x 1012 disintegration per second will have an activity of 3.7 Ci 100 Ci 10milli Ci 370 Ci 9 / 10 the curies per gram for a gamma ray source is called as the specific activity of the source the quality of the source the atomic weight of the source the half life of the source 10 / 10 the energy of gamma and x ray is expressed by which of the following units of measurement curie roentgen half life kilo electron volt or million electron volt Your score isThe average score is 52% LinkedIn Facebook VKontakte 0% Restart quiz 0% 2131 Created on June 04, 2021Liquid Penetrant Testing Liquid Penetrant Testing Quiz-1 1 / 10 Correct developer coating thickness is indicated by: A slightly pinkish background A thin, translucent layer A fine, misting spray An even, snowy white appearance 2 / 10 The penetrant process best suited to use on parts with rough surfaces is: Solvent removable Magnetic particle Water washable Post emulsifiable 3 / 10 In the solvent removable penetrant process, excess penetrant is removed with: A solvent spray Clean, lint free towels slightly moistened with solvent A hydrophilic scrubber A water spray 4 / 10 The act of determining the cause of an indication is called Interpretation Evaluation Determination Inspection 5 / 10 Penetrant testing is limited by its inability to test which of the following materials: Aluminium Moulded rubber Ceramics Porous materials 6 / 10 The time period during which penetrant remains on the surface of the test piece is called: Dwell time Development time Fixing time Soaking time 7 / 10 Penetrants may be applied to the surface of part by : Spraying Dipping Pouring All of the above methods are acceptable 8 / 10 Which penetrant process is best suited to detect shallow discontinuities? Solvent removable Fluorescent Post emulsifiable Water washable 9 / 10 Liquid penetrant testing is based on the principle of: Capillary action Magnetic domains Absorption of X rays Polarized sound waves in a liquid 10 / 10 How is the size of a liquid penetrant indication usually related to the discontinuity itrepresents: Smaller than Not related to Equal to Larger than Your score isThe average score is 64% LinkedIn Facebook VKontakte 0% Restart quiz 0% 1225 Created on June 04, 2021Liquid Penetrant Testing Liquid Penetrant Testing Quiz-2 1 / 10 Which of the following is a prerequisite for a penetrant test? Developer must be applied in a thin, even coat The test object must be non-magnetic Any surface coatings or soils must be completely removed All traces of penetrant materials should be removed after testing is complete 2 / 10 A hydrometer is used to measure: Cleaner specific gravity Penetrant viscosity Specific gravity of water based wet developers Penetrant specific gravity 3 / 10 Which of the following types of pre-cleaning processes may be used for liquid penetrant testing? Detergent and water only Wire brushing only Vapour degreasing only Any process that leaves the part clean and dry, does not harm the part and is compatible with the penetrant materials 4 / 10 What is the preferred pre-cleaning process for removal of oil and grease : Ultrasonic cleaning Steam cleaning Steam cleaning with a added acid Vapour degreasing 5 / 10 What minimum warm-up time is required for acceptable performance of a mercury Vapour arc black light? 10 minutes 5 minutes None 2 minutes 6 / 10 Which of the following penetrants contains an emulsifying agent? Fluorescent Solvent removable Post emulsifiable Water washable 7 / 10 Visible, solvent removable penetrants are most advantageous for: Inspecting batches of small parts Inspecting parts with rough surfaces Inspecting parts with porous surfaces Inspecting parts at remote locations 8 / 10 For adequate test results, the black light used in fluorescent penetrant examination should provide what minimum black light intensity at the test surface? 1000 microwatts per square centimetre 800 foot candles 35 microwatts per square centimeter 100 foot candles per square centimetre 9 / 10 What is the likely result of incomplete removal of all excess penetrant from the test piece surface? Exaggeration of the size of relevant indications Formation of false indications Formation of relevant indications None of the above 10 / 10 What type of solvent removers may be used with a solvent removable penetrant? Only chlorinated hydrocarbons Any alcohol based solvents Any organic solvent Only the cleaner recommended by the manufacturer of the penetrant Your score isThe average score is 68% LinkedIn Facebook VKontakte 0% Restart quiz 0% 964 Created on June 04, 2021Liquid Penetrant Testing Liquid Penetrant Testing Quiz-3 1 / 10 Excess penetrant removal is a two step process with which of the following penetrant methods? Water washable Liquid oxygen applications Post emulsifiable Solvent removable 2 / 10 Which of the following is a function of a developer? Accentuates presence of discontinuities by causing a penetrant indication to spread out over a larger area All of the above Provides capillary paths to aid the bleed out process Providing a contrasting background for visible dye indications 3 / 10 Which of the following is a function of a developer Dissolve organic soils on the test piece surface Providing a contrasting background for visible dye indications Making the penetrant water washable Penetrating into discontinuities open to the surface 4 / 10 In the solvent removable penetrant process, excess penetrant is removed with: A hydrophilic scrubber Clean, lint free towels slightly moistened with solvent A water spray A solvent spray 5 / 10 A developer aids penetrant bleed out because of: Providing a contrasting background for visible dye indications Adequate removal of the excess penetrant Capillary action Proper emulsifier action 6 / 10 The most sensitive type of developer for the detection of fine discontinuities is: Water Suspendable Dry Water soluble Non-aqueous wet 7 / 10 Which of the following is the most sensitive developer in descending order? Non-aqueous wet, dry, water soluble Dry, water soluble, water suspendable Water suspendable, water soluble, non-aqueous wet Non-aqueous wet, water soluble, water suspendable ,dry 8 / 10 The time period during which penetrant remains on the surface of the test piece is called: Development time Dwell time Fixing time Soaking time 9 / 10 Water based wet developer is applied: After a drying period following removal of excess penetrant Immediately before removal of excess penetrant Immediately after removal of excess penetrant For maximum sensitivity results 10 / 10 Which of the following developers is applied before the drying operation? Water based wet Dry None of the above Non-aqueous wet Your score isThe average score is 69% LinkedIn Facebook VKontakte 0% Restart quiz 0% 959 Created on July 08, 2021Liquid Penetrant Testing Magnetic Particle Testing Quiz-1 1 / 10 The magnetic field is strongest when the : Magnetizing voltage is flowing Magnetizing current is not flowing Magnetizing current is flowing Materials exhibits high coercive forces 2 / 10 Why are magnetic particles available in different colors ? Both a and b Different colors are used with different magnetic flux values. To enhance the detection of indications For color contrast with the part surface 3 / 10 The unit usually used to denote flux density is the : Farad Gauss Henry Ampere 4 / 10 Which statement is true when related to magnetic lines of force ? They seek the path of least resistance They are most dense at the poles of a magnet All of the above They never cross 5 / 10 Magnetic particle is a nondestructive examination method used for : Detecting material separation Locating surface discontinuities Locating near surface discontinuities Both a and b 6 / 10 Which of the following can be magnetized ? Cobalt Nickel Iron All of the above 7 / 10 If a crack exists in a circular magnet , the attraction of magnetic particles to the crack is caused by : Coercive force Leakage field High reluctance at the crack Doppler effect 8 / 10 The permeability of a material describes the : Ability to retain the magnetic field Depth of magnetic field in the part Length of time required to demagnetize it Ease with which it can be magnetized 9 / 10 Ferromagnetic material is : Both a and b Capable of being magnetized Not capable of being magnetized Strongly attracted by a magnet 10 / 10 The retentivity of a material describes the : Depth of magnetic field in the part Length of time required to demagnetize it Ease with which it can be magnetized Ability to retain the magnetic field Your score isThe average score is 68% LinkedIn Facebook VKontakte 0% Restart quiz 0% 764 Created on July 08, 2021Liquid Penetrant Testing Magnetic Particle Testing Quiz-2 1 / 10 The proper number of ampere turns for a given test specimen is determined by : Both a and b The material Its length Its diameter 2 / 10 The magnitude of the residual magnetic field in a specimen is dependent on the : Strength of the applied magnetic force Right hand rule Left hand rule L/D ratio 3 / 10 A coil around the part produces : A longitudinal field A circular field An intermittent field Either a or b depending on the type of current applied 4 / 10 What rule describes the direction of current flow when lines of magnetic force surround a conductor? The right hand thumb rule The reluctance rule The flux rule The left hand thump rule 5 / 10 Magnetic flux lines which are parallel to a discontinuity produce : No indications Fuzzy indications Weak indications Strong indications 6 / 10 A part is adaptable to magnetic particle inspection if : The material is ferromagnetic It is attached to an electro static field The material is non ferrous The materials is an electric conductor 7 / 10 An electrical yoke produces : A circular field A swinging filed A longitudinal field Alternating fields 8 / 10 A circular filed may be induced into a specimen by : Direct induction (head shot) Central conductor All of the above Direct induction (prods) 9 / 10 Magnetic lines of force : Travel in straight lines Overlay in highly ferromagnetic materials Form a closed loop Are randomly oriented 10 / 10 In longitudinal magnetization the proper term for calculating magnetizing force is : Watts Ampere turns Ohms Amperes Your score isThe average score is 67% LinkedIn Facebook VKontakte 0% Restart quiz
