Quizzes 0% 153 Created on September 28, 2022 Radiography Quiz - 2 QUIZ-2 1 / 10 Co-59 becomes Co-60 , when it is placed in a nuclear reactor , where it captures electrons protons neutrons Atoms 2 / 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 3 / 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 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 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 6 / 10 Isotope of an element differ in their mass number atomic number electron number none of the above 7 / 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 8 / 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 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 pair production ionization biological damage none of the above Your score is The average score is 53% LinkedIn Facebook Twitter VKontakte 0% Restart quiz 0% 130 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 a radioisotope and stable isotope of an element differ in their mass number atomic number chemical property none of the above 5 / 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 6 / 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 7 / 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 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 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 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 is The average score is 52% LinkedIn Facebook Twitter VKontakte 0% Restart quiz 0% 1310 Created on June 04, 2021Liquid Penetrant Testing Liquid Penetrant Testing Quiz-1 1 / 10 The time period during which penetrant remains on the surface of the test piece is called: Fixing time Development time Dwell time Soaking time 2 / 10 The penetrant process best suited to use on parts with rough surfaces is: Magnetic particle Solvent removable Post emulsifiable Water washable 3 / 10 Penetrant testing is limited by its inability to test which of the following materials: Moulded rubber Porous materials Aluminium Ceramics 4 / 10 Liquid penetrant testing is based on the principle of: Capillary action Magnetic domains Polarized sound waves in a liquid Absorption of X rays 5 / 10 In the solvent removable penetrant process, excess penetrant is removed with: A solvent spray A water spray Clean, lint free towels slightly moistened with solvent A hydrophilic scrubber 6 / 10 How is the size of a liquid penetrant indication usually related to the discontinuity itrepresents: Smaller than Larger than Equal to Not related to 7 / 10 The act of determining the cause of an indication is called Inspection Interpretation Evaluation Determination 8 / 10 Penetrants may be applied to the surface of part by : All of the above methods are acceptable Pouring Dipping Spraying 9 / 10 Which penetrant process is best suited to detect shallow discontinuities? Water washable Solvent removable Fluorescent Post emulsifiable 10 / 10 Correct developer coating thickness is indicated by: An even, snowy white appearance A fine, misting spray A thin, translucent layer A slightly pinkish background Your score is The average score is 64% LinkedIn Facebook Twitter VKontakte 0% Restart quiz 0% 717 Created on June 04, 2021Liquid Penetrant Testing Liquid Penetrant Testing Quiz-2 1 / 10 Which of the following types of pre-cleaning processes may be used for liquid penetrant testing? Wire brushing only 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 2 / 10 Which of the following penetrants contains an emulsifying agent? Water washable Fluorescent Solvent removable Post emulsifiable 3 / 10 What type of solvent removers may be used with a solvent removable penetrant? Any organic solvent Any alcohol based solvents Only chlorinated hydrocarbons Only the cleaner recommended by the manufacturer of the penetrant 4 / 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 800 foot candles 35 microwatts per square centimeter 1000 microwatts per square centimetre 5 / 10 A hydrometer is used to measure: Specific gravity of water based wet developers Penetrant viscosity Penetrant specific gravity Cleaner specific gravity 6 / 10 Which of the following is a prerequisite for a penetrant test? All traces of penetrant materials should be removed after testing is complete Developer must be applied in a thin, even coat Any surface coatings or soils must be completely removed The test object must be non-magnetic 7 / 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 Formation of relevant indications Exaggeration of the size of relevant indications 8 / 10 Visible, solvent removable penetrants are most advantageous for: Inspecting parts at remote locations Inspecting batches of small parts Inspecting parts with porous surfaces Inspecting parts with rough surfaces 9 / 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 10 / 10 What is the preferred pre-cleaning process for removal of oil and grease : Steam cleaning with a added acid Vapour degreasing Steam cleaning Ultrasonic cleaning Your score is The average score is 67% LinkedIn Facebook Twitter VKontakte 0% Restart quiz 0% 558 Created on June 04, 2021Liquid Penetrant Testing Liquid Penetrant Testing Quiz-3 1 / 10 Which of the following is a function of a developer Providing a contrasting background for visible dye indications Penetrating into discontinuities open to the surface Making the penetrant water washable Dissolve organic soils on the test piece surface 2 / 10 Excess penetrant removal is a two step process with which of the following penetrant methods? Post emulsifiable Liquid oxygen applications Water washable Solvent removable 3 / 10 Which of the following developers is applied before the drying operation? Water based wet None of the above Non-aqueous wet Dry 4 / 10 In the solvent removable penetrant process, excess penetrant is removed with: Clean, lint free towels slightly moistened with solvent A water spray A hydrophilic scrubber A solvent spray 5 / 10 A developer aids penetrant bleed out because of: Capillary action Adequate removal of the excess penetrant Providing a contrasting background for visible dye indications Proper emulsifier action 6 / 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 Providing a contrasting background for visible dye indications All of the above Provides capillary paths to aid the bleed out process 7 / 10 The most sensitive type of developer for the detection of fine discontinuities is: Non-aqueous wet Dry Water Suspendable Water soluble 8 / 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 9 / 10 Which of the following is the most sensitive developer in descending order? Dry, water soluble, water suspendable Non-aqueous wet, water soluble, water suspendable ,dry Non-aqueous wet, dry, water soluble Water suspendable, water soluble, non-aqueous wet 10 / 10 The time period during which penetrant remains on the surface of the test piece is called: Development time Dwell time Soaking time Fixing time Your score is The average score is 69% LinkedIn Facebook Twitter VKontakte 0% Restart quiz 0% 510 Created on July 08, 2021Liquid Penetrant Testing Magnetic Particle Testing Quiz-1 1 / 10 If a crack exists in a circular magnet , the attraction of magnetic particles to the crack is caused by : Doppler effect High reluctance at the crack Leakage field Coercive force 2 / 10 Which statement is true when related to magnetic lines of force ? They are most dense at the poles of a magnet They never cross They seek the path of least resistance All of the above 3 / 10 The permeability of a material describes the : Length of time required to demagnetize it Ease with which it can be magnetized Ability to retain the magnetic field Depth of magnetic field in the part 4 / 10 Ferromagnetic material is : Both a and b Strongly attracted by a magnet Capable of being magnetized Not capable of being magnetized 5 / 10 The magnetic field is strongest when the : Magnetizing voltage is flowing Magnetizing current is not flowing Materials exhibits high coercive forces Magnetizing current is flowing 6 / 10 Which of the following can be magnetized ? Cobalt All of the above Nickel Iron 7 / 10 Magnetic particle is a nondestructive examination method used for : Locating surface discontinuities Both a and b Locating near surface discontinuities Detecting material separation 8 / 10 The unit usually used to denote flux density is the : Gauss Farad Ampere Henry 9 / 10 Why are magnetic particles available in different colors ? Both a and b To enhance the detection of indications For color contrast with the part surface Different colors are used with different magnetic flux values. 10 / 10 The retentivity of a material describes the : Length of time required to demagnetize it Ability to retain the magnetic field Ease with which it can be magnetized Depth of magnetic field in the part Your score is The average score is 66% LinkedIn Facebook Twitter VKontakte 0% Restart quiz 0% 402 Created on July 08, 2021Liquid Penetrant Testing Magnetic Particle Testing Quiz-2 1 / 10 A coil around the part produces : Either a or b depending on the type of current applied An intermittent field A circular field A longitudinal field 2 / 10 The magnitude of the residual magnetic field in a specimen is dependent on the : Right hand rule Strength of the applied magnetic force L/D ratio Left hand rule 3 / 10 Magnetic flux lines which are parallel to a discontinuity produce : No indications Strong indications Weak indications Fuzzy indications 4 / 10 Magnetic lines of force : Overlay in highly ferromagnetic materials Are randomly oriented Travel in straight lines Form a closed loop 5 / 10 What rule describes the direction of current flow when lines of magnetic force surround a conductor? The right hand thumb rule The left hand thump rule The reluctance rule The flux rule 6 / 10 An electrical yoke produces : A longitudinal field A circular field Alternating fields A swinging filed 7 / 10 A circular filed may be induced into a specimen by : All of the above Central conductor Direct induction (head shot) Direct induction (prods) 8 / 10 In longitudinal magnetization the proper term for calculating magnetizing force is : Ampere turns Ohms Amperes Watts 9 / 10 The proper number of ampere turns for a given test specimen is determined by : Both a and b Its length Its diameter The material 10 / 10 A part is adaptable to magnetic particle inspection if : The material is ferromagnetic The materials is an electric conductor The material is non ferrous It is attached to an electro static field Your score is The average score is 66% LinkedIn Facebook Twitter VKontakte 0% Restart quiz
