Quizzes 0% 49 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 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 When radiation removes an electron from an atom , the process is called pair production ionization biological damage none of the above 5 / 10 The project area of the target of an X ray tube is called focal spot focus effective focal spot Geometric unsharpness 6 / 10 Co-59 becomes Co-60 , when it is placed in a nuclear reactor , where it captures electrons protons neutrons Atoms 7 / 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 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 Isotope of an element differ in their mass number atomic number electron number none of the above 10 / 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 Your score is The average score is 53% LinkedIn Facebook Twitter VKontakte 0% Restart quiz 0% 61 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 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 3 / 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 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 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 6 / 10 a radioisotope and stable isotope of an element differ in their mass number atomic number chemical property none of the above 7 / 10 1 Curie is equivalent of 001 milli Ci 1000 milli Ci 100 Mega Ci .000001 micro Ci 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 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 10 / 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 Your score is The average score is 51% LinkedIn Facebook Twitter VKontakte 0% Restart quiz 0% 1032 Created on June 04, 2021Liquid Penetrant Testing Liquid Penetrant Testing Quiz-1 1 / 10 How is the size of a liquid penetrant indication usually related to the discontinuity itrepresents: Equal to Not related to Smaller than Larger than 2 / 10 Correct developer coating thickness is indicated by: A slightly pinkish background An even, snowy white appearance A fine, misting spray A thin, translucent layer 3 / 10 The act of determining the cause of an indication is called Evaluation Determination Interpretation Inspection 4 / 10 Penetrants may be applied to the surface of part by : Pouring Dipping All of the above methods are acceptable Spraying 5 / 10 The penetrant process best suited to use on parts with rough surfaces is: Magnetic particle Solvent removable Post emulsifiable Water washable 6 / 10 Which penetrant process is best suited to detect shallow discontinuities? Post emulsifiable Fluorescent Water washable Solvent removable 7 / 10 The time period during which penetrant remains on the surface of the test piece is called: Dwell time Soaking time Development time Fixing time 8 / 10 In the solvent removable penetrant process, excess penetrant is removed with: A water spray A solvent spray A hydrophilic scrubber Clean, lint free towels slightly moistened with solvent 9 / 10 Penetrant testing is limited by its inability to test which of the following materials: Aluminium Ceramics Moulded rubber Porous materials 10 / 10 Liquid penetrant testing is based on the principle of: Polarized sound waves in a liquid Capillary action Magnetic domains Absorption of X rays Your score is The average score is 64% LinkedIn Facebook Twitter VKontakte 0% Restart quiz 0% 549 Created on June 04, 2021Liquid Penetrant Testing Liquid Penetrant Testing Quiz-2 1 / 10 Visible, solvent removable penetrants are most advantageous for: Inspecting batches of small parts Inspecting parts with porous surfaces Inspecting parts with rough surfaces Inspecting parts at remote locations 2 / 10 What minimum warm-up time is required for acceptable performance of a mercury Vapour arc black light? 10 minutes None 5 minutes 2 minutes 3 / 10 A hydrometer is used to measure: Cleaner specific gravity Specific gravity of water based wet developers Penetrant viscosity Penetrant specific gravity 4 / 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 5 / 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 6 / 10 What type of solvent removers may be used with a solvent removable penetrant? Only the cleaner recommended by the manufacturer of the penetrant Only chlorinated hydrocarbons Any alcohol based solvents Any organic solvent 7 / 10 What is the likely result of incomplete removal of all excess penetrant from the test piece surface? None of the above Exaggeration of the size of relevant indications Formation of false indications Formation of relevant indications 8 / 10 What is the preferred pre-cleaning process for removal of oil and grease : Steam cleaning Vapour degreasing Ultrasonic cleaning Steam cleaning with a added acid 9 / 10 For adequate test results, the black light used in fluorescent penetrant examination should provide what minimum black light intensity at the test surface? 100 foot candles per square centimetre 1000 microwatts per square centimetre 35 microwatts per square centimeter 800 foot candles 10 / 10 Which of the following penetrants contains an emulsifying agent? Water washable Post emulsifiable Fluorescent Solvent removable Your score is The average score is 67% LinkedIn Facebook Twitter VKontakte 0% Restart quiz 0% 433 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? Non-aqueous wet, dry, water soluble Non-aqueous wet, water soluble, water suspendable ,dry Dry, water soluble, water suspendable Water suspendable, water soluble, non-aqueous wet 2 / 10 The time period during which penetrant remains on the surface of the test piece is called: Dwell time Fixing time Soaking time Development time 3 / 10 Water based wet developer is applied: After a drying period following removal of excess penetrant For maximum sensitivity results Immediately before removal of excess penetrant Immediately after removal of excess penetrant 4 / 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 5 / 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 6 / 10 Which of the following developers is applied before the drying operation? Non-aqueous wet Water based wet Dry None of the above 7 / 10 Which of the following is a function of a developer? Providing a contrasting background for visible dye indications Provides capillary paths to aid the bleed out process All of the above Accentuates presence of discontinuities by causing a penetrant indication to spread out over a larger area 8 / 10 A developer aids penetrant bleed out because of: Adequate removal of the excess penetrant Proper emulsifier action Providing a contrasting background for visible dye indications Capillary action 9 / 10 The most sensitive type of developer for the detection of fine discontinuities is: Water Suspendable Dry Water soluble Non-aqueous wet 10 / 10 In the solvent removable penetrant process, excess penetrant is removed with: A water spray A hydrophilic scrubber Clean, lint free towels slightly moistened with solvent A solvent spray Your score is The average score is 68% LinkedIn Facebook Twitter VKontakte 0% Restart quiz 0% 342 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 flowing Magnetizing current is not flowing Materials exhibits high coercive forces 2 / 10 The permeability of a material describes the : Ability to retain the magnetic field Depth of magnetic field in the part Ease with which it can be magnetized Length of time required to demagnetize it 3 / 10 Which statement is true when related to magnetic lines of force ? They seek the path of least resistance All of the above They never cross They are most dense at the poles of a magnet 4 / 10 The retentivity of a material describes the : Ease with which it can be magnetized Ability to retain the magnetic field Depth of magnetic field in the part Length of time required to demagnetize it 5 / 10 The unit usually used to denote flux density is the : Gauss Ampere Henry Farad 6 / 10 Which of the following can be magnetized ? Iron Nickel Cobalt All of the above 7 / 10 Why are magnetic particles available in different colors ? For color contrast with the part surface To enhance the detection of indications Both a and b Different colors are used with different magnetic flux values. 8 / 10 Ferromagnetic material is : Strongly attracted by a magnet Capable of being magnetized Both a and b Not capable of being magnetized 9 / 10 If a crack exists in a circular magnet , the attraction of magnetic particles to the crack is caused by : Leakage field Doppler effect Coercive force High reluctance at the crack 10 / 10 Magnetic particle is a nondestructive examination method used for : Both a and b Locating surface discontinuities Detecting material separation Locating near surface discontinuities Your score is The average score is 66% LinkedIn Facebook Twitter VKontakte 0% Restart quiz 0% 276 Created on July 08, 2021Liquid Penetrant Testing Magnetic Particle Testing Quiz-2 1 / 10 What rule describes the direction of current flow when lines of magnetic force surround a conductor? The reluctance rule The left hand thump rule The right hand thumb rule The flux rule 2 / 10 Magnetic lines of force : Travel in straight lines Are randomly oriented Form a closed loop Overlay in highly ferromagnetic materials 3 / 10 An electrical yoke produces : A circular field Alternating fields A swinging filed A longitudinal field 4 / 10 A circular filed may be induced into a specimen by : Central conductor Direct induction (prods) All of the above Direct induction (head shot) 5 / 10 A part is adaptable to magnetic particle inspection if : It is attached to an electro static field The material is non ferrous The material is ferromagnetic The materials is an electric conductor 6 / 10 The proper number of ampere turns for a given test specimen is determined by : The material Its length Its diameter Both a and b 7 / 10 A coil around the part produces : Either a or b depending on the type of current applied A longitudinal field A circular field An intermittent field 8 / 10 The magnitude of the residual magnetic field in a specimen is dependent on the : Left hand rule Right hand rule L/D ratio Strength of the applied magnetic force 9 / 10 In longitudinal magnetization the proper term for calculating magnetizing force is : Watts Ohms Ampere turns Amperes 10 / 10 Magnetic flux lines which are parallel to a discontinuity produce : Weak indications Strong indications Fuzzy indications No indications Your score is The average score is 67% LinkedIn Facebook Twitter VKontakte 0% Restart quiz
