Quizzes 0% 172 Created on April 08, 2023 Welding Quiz - 1 Welding Quiz - 1 1 / 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 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 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 4 / 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 5 / 10 You would certainly recognise a hydrogen controlled flux covered electrode from its: Colour Length Trade Name BS639/AWS code letter 6 / 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 7 / 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 8 / 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 9 / 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 10 / 10 When 'hydrogen control' is specified for a maual metal arc welding project the electrode would normally be: Cellulose Iron Oxide Acid Basic 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 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 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 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 4 / 10 Isotope of an element differ in their mass number atomic number electron number none of the above 5 / 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 6 / 10 When radiation removes an electron from an atom , the process is called pair production ionization biological damage none of the above 7 / 10 The project area of the target of an X ray tube is called focal spot focus effective focal spot Geometric unsharpness 8 / 10 Co-59 becomes Co-60 , when it is placed in a nuclear reactor , where it captures electrons protons neutrons Atoms 9 / 10 The unit of activity is sievert Becquerel Gray none of the above 10 / 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 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 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 2 / 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 3 / 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 4 / 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 5 / 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 6 / 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 7 / 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 8 / 10 1 Curie is equivalent of 001 milli Ci 1000 milli Ci 100 Mega Ci .000001 micro Ci 9 / 10 a radioisotope and stable isotope of an element differ in their mass number atomic number chemical property none of the above 10 / 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 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 Penetrants may be applied to the surface of part by : Spraying Dipping Pouring All of the above methods are acceptable 2 / 10 Correct developer coating thickness is indicated by: A fine, misting spray A slightly pinkish background A thin, translucent layer An even, snowy white appearance 3 / 10 Which penetrant process is best suited to detect shallow discontinuities? Water washable Solvent removable Post emulsifiable Fluorescent 4 / 10 The penetrant process best suited to use on parts with rough surfaces is: Solvent removable Post emulsifiable Water washable Magnetic particle 5 / 10 Liquid penetrant testing is based on the principle of: Magnetic domains Capillary action Polarized sound waves in a liquid Absorption of X rays 6 / 10 The act of determining the cause of an indication is called Determination Interpretation Inspection Evaluation 7 / 10 Penetrant testing is limited by its inability to test which of the following materials: Aluminium Moulded rubber Porous materials Ceramics 8 / 10 The time period during which penetrant remains on the surface of the test piece is called: Development time Fixing time Dwell time Soaking time 9 / 10 How is the size of a liquid penetrant indication usually related to the discontinuity itrepresents: Smaller than Not related to Larger than Equal to 10 / 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 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 What is the likely result of incomplete removal of all excess penetrant from the test piece surface? Exaggeration of the size of relevant indications None of the above Formation of relevant indications Formation of false indications 2 / 10 Visible, solvent removable penetrants are most advantageous for: Inspecting parts at remote locations Inspecting parts with porous surfaces Inspecting parts with rough surfaces Inspecting batches of small parts 3 / 10 What type of solvent removers may be used with a solvent removable penetrant? Any alcohol based solvents Any organic solvent Only chlorinated hydrocarbons Only the cleaner recommended by the manufacturer of the penetrant 4 / 10 What is the preferred pre-cleaning process for removal of oil and grease : Ultrasonic cleaning Vapour degreasing Steam cleaning with a added acid Steam cleaning 5 / 10 For adequate test results, the black light used in fluorescent penetrant examination should provide what minimum black light intensity at the test surface? 35 microwatts per square centimeter 1000 microwatts per square centimetre 800 foot candles 100 foot candles per square centimetre 6 / 10 Which of the following is a prerequisite for a penetrant test? The test object must be non-magnetic All traces of penetrant materials should be removed after testing is complete Any surface coatings or soils must be completely removed Developer must be applied in a thin, even coat 7 / 10 Which of the following types of pre-cleaning processes may be used for liquid penetrant testing? Any process that leaves the part clean and dry, does not harm the part and is compatible with the penetrant materials Wire brushing only Detergent and water only Vapour degreasing only 8 / 10 A hydrometer is used to measure: Penetrant viscosity Cleaner specific gravity Penetrant specific gravity Specific gravity of water based wet developers 9 / 10 What minimum warm-up time is required for acceptable performance of a mercury Vapour arc black light? None 5 minutes 2 minutes 10 minutes 10 / 10 Which of the following penetrants contains an emulsifying agent? Solvent removable Water washable Post emulsifiable Fluorescent 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 Water based wet developer is applied: For maximum sensitivity results Immediately before removal of excess penetrant After a drying period following removal of excess penetrant Immediately after removal of excess penetrant 2 / 10 Which of the following is the most sensitive developer in descending order? Non-aqueous wet, water soluble, water suspendable ,dry Dry, water soluble, water suspendable Non-aqueous wet, dry, water soluble Water suspendable, water soluble, non-aqueous wet 3 / 10 The time period during which penetrant remains on the surface of the test piece is called: Development time Fixing time Soaking time Dwell time 4 / 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 Providing a contrasting background for visible dye indications Provides capillary paths to aid the bleed out process 5 / 10 The most sensitive type of developer for the detection of fine discontinuities is: Non-aqueous wet Water soluble Water Suspendable Dry 6 / 10 A developer aids penetrant bleed out because of: Proper emulsifier action Adequate removal of the excess penetrant Providing a contrasting background for visible dye indications Capillary action 7 / 10 Which of the following developers is applied before the drying operation? Dry Water based wet None of the above Non-aqueous wet 8 / 10 In the solvent removable penetrant process, excess penetrant is removed with: A solvent spray Clean, lint free towels slightly moistened with solvent A water spray A hydrophilic scrubber 9 / 10 Which of the following is a function of a developer Penetrating into discontinuities open to the surface Dissolve organic soils on the test piece surface Making the penetrant water washable Providing a contrasting background for visible dye indications 10 / 10 Excess penetrant removal is a two step process with which of the following penetrant methods? Water washable Post emulsifiable Solvent removable Liquid oxygen applications 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 Which statement is true when related to magnetic lines of force ? They are most dense at the poles of a magnet They seek the path of least resistance All of the above They never cross 2 / 10 Magnetic particle is a nondestructive examination method used for : Locating near surface discontinuities Both a and b Locating surface discontinuities Detecting material separation 3 / 10 If a crack exists in a circular magnet , the attraction of magnetic particles to the crack is caused by : Leakage field High reluctance at the crack Doppler effect Coercive force 4 / 10 Why are magnetic particles available in different colors ? To enhance the detection of indications Different colors are used with different magnetic flux values. For color contrast with the part surface Both a and b 5 / 10 The unit usually used to denote flux density is the : Ampere Gauss Farad Henry 6 / 10 The permeability of a material describes the : Depth of magnetic field in the part Ease with which it can be magnetized Length of time required to demagnetize it Ability to retain the magnetic field 7 / 10 Which of the following can be magnetized ? Cobalt Iron Nickel All of the above 8 / 10 Ferromagnetic material is : Not capable of being magnetized Both a and b Strongly attracted by a magnet Capable of being magnetized 9 / 10 The magnetic field is strongest when the : Magnetizing current is flowing Magnetizing voltage is flowing Magnetizing current is not flowing Materials exhibits high coercive forces 10 / 10 The retentivity of a material describes the : Ease with which it can be magnetized Length of time required to demagnetize it Depth of magnetic field in the part 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 A part is adaptable to magnetic particle inspection if : The materials is an electric conductor The material is non ferrous The material is ferromagnetic It is attached to an electro static field 2 / 10 The proper number of ampere turns for a given test specimen is determined by : Its length Its diameter Both a and b The material 3 / 10 An electrical yoke produces : Alternating fields A swinging filed A circular field A longitudinal field 4 / 10 Magnetic flux lines which are parallel to a discontinuity produce : Fuzzy indications No indications Weak indications Strong indications 5 / 10 A coil around the part produces : Either a or b depending on the type of current applied A longitudinal field An intermittent field A circular field 6 / 10 In longitudinal magnetization the proper term for calculating magnetizing force is : Amperes Ohms Ampere turns Watts 7 / 10 The magnitude of the residual magnetic field in a specimen is dependent on the : L/D ratio Strength of the applied magnetic force Right hand rule Left hand rule 8 / 10 What rule describes the direction of current flow when lines of magnetic force surround a conductor? The right hand thumb rule The flux rule The reluctance rule The left hand thump rule 9 / 10 Magnetic lines of force : Overlay in highly ferromagnetic materials Are randomly oriented Travel in straight lines Form a closed loop 10 / 10 A circular filed may be induced into a specimen by : All of the above Direct induction (prods) Direct induction (head shot) Central conductor Your score isThe average score is 67% LinkedIn Facebook VKontakte 0% Restart quiz
