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