Results

function Question (qname, type, qstring, response, comment, corrects, explan, score, ifcorrect,ifwrong,ifnull, img) {this.qname=qname; this.type=type; this.qstring=qstring; this.response=response; this.comment=comment; this.corrects=corrects; this.explan=explan; this.score=score; this.ifcorrect=ifcorrect; this.ifwrong=ifwrong; this.ifnull=ifnull; this.img=img; } var zin=1,top=0, mycount=0, waitTime=0, qright=0, mycomment; var global=new Array(3); var recent, recent2, recdone=false, opera7, opera=CheckOpera56(); function cachewrite(s,idx){global[idx]+=s;} function CheckOpera56() { var version; if (navigator.userAgent.toLowerCase().indexOf('opera') == -1) return false; version=parseInt(navigator.appVersion.toLowerCase()); if (version>6) {opera7=true; return false;} if (version<5) return false; return true; } resp=new Array("Henri Becquerel","Wilhelm Roentgen","Marie Curie","Pierre Curie") corr=new Array("0","1","0","0") comm="" valu="" quest001 = new Question( "Question 1", 0, "Who is given credit for the discovery of X-ray?", resp, comm, corr, "", valu, 1, 0, 0, ""); resp=new Array("Henri Becquerel","Wilhelm Roentgen","Marie Curie","Pierre Curie") corr=new Array("1","0","0","0") comm="" valu="" quest002 = new Question( "Question 2", 0, "Who is given credit for the discovery of radioactive materials?", resp, comm, corr, "", valu, 1, 0, 0, ""); resp=new Array("Light","Particle radiation","Electromagnetic radiation","Both B and C") corr=new Array("0","0","1","0") comm="" valu="" quest003 = new Question( "Question 3", 0, "X-rays and Gamma rays are a form of:", resp, comm, corr, "", valu, 1, 0, 0, ""); resp=new Array("Short wavelength","Medium wavelength","Long wavelength","Wide range of wavelengths") corr=new Array("1","0","0","0") comm="" valu="" quest004 = new Question( "Question 4", 0, "X-rays and Gamma rays have significant penetrating power due to their: ", resp, comm, corr, "", valu, 1, 0, 0, ""); resp=new Array("Vibrate water molecules and generate heat","Break chemical bonds","Break physical bonds","None of the above") corr=new Array("0","1","0","0") comm="" valu="" quest005 = new Question( "Question 5", 0, "X-rays and Gamma rays present a health risk because they are a form of ionizing radiation, which means that the radiation has enough energy to:", resp, comm, corr, "", valu, 1, 0, 0, ""); resp=new Array("Have been eliminated with controls and procedures","Are minimized through controls and procedures","Are worth the risk","Are being ignored") corr=new Array("0","1","0","0") comm="" valu="" quest006 = new Question( "Question 6", 0, "Ionizing radiation can be used in industrial radiography because the health hazards:", resp, comm, corr, "", valu, 1, 0, 0, ""); resp=new Array("Always travel in a straight line","Can be influenced by an electrical field","Can be influenced by a magnetic field ","None of the above") corr=new Array("1","0","0","0") comm="" valu="" quest007 = new Question( "Question 7", 0, "X-rays and Gamma rays:", resp, comm, corr, "", valu, 1, 0, 0, ""); resp=new Array("They possess a charge","They have mass","They occur as small packets of energy","None of the above") corr=new Array("0","0","1","0") comm="" valu="" quest008 = new Question( "Question 8", 0, "X-rays and Gamma rays are often referred to as photons because:", resp, comm, corr, "", valu, 1, 0, 0, ""); resp=new Array("Are both affected by radioactive decay","Are both produced by a radioactive atom","Have completely different properties","Differ only in their source") corr=new Array("0","0","0","1") comm="" valu="" quest009 = new Question( "Question 9", 0, "X-rays and Gamma rays:", resp, comm, corr, "", valu, 1, 0, 0, ""); resp=new Array("Radioactive decay","Distance from the source","The size of the source","None of the above") corr=new Array("0","1","0","0") comm="" valu="" quest010 = new Question( "Question 10", 0, "Newtons Inverse Square Law is useful in radiography because it indicates how the radiation intensity is affected by:", resp, comm, corr, "", valu, 1, 0, 0, ""); resp=new Array("Isotope decay rate","Half-life","Activity","Attenuation") corr=new Array("1","0","0","0") comm="" valu="" quest011 = new Question( "Question 11", 0, "The rate at which a radioactive isotope changes to a more stable atom is know as the:", resp, comm, corr, "", valu, 1, 0, 0, ""); resp=new Array("Absorption","Scattering","Radioactive decay","Both A and B") corr=new Array("0","0","0","1") comm="" valu="" quest012 = new Question( "Question 12", 0, "Attenuation of radiation is due to:", resp, comm, corr, "", valu, 1, 0, 0, ""); resp=new Array("Energy of the photons","Thickness of the material","Atomic number of the material","All of the above") corr=new Array("0","0","0","1") comm="" valu="" quest013 = new Question( "Question 13", 0, "The number of X-ray or Gamma photons that are transmitted through a material depends on the:", resp, comm, corr, "", valu, 1, 0, 0, ""); resp=new Array("Decreases exponentially with increasing material thickness","Increase linearly with increasing material thickness","Decrease linearly with increasing material thickness","None of the above") corr=new Array("1","0","0","0") comm="" valu="" quest014 = new Question( "Question 14", 0, "When penetrating radiation is directed at a material, the radiation intensity decreases:", resp, comm, corr, "", valu, 1, 0, 0, ""); resp=new Array("Mass attenuation coefficient","Linear attenuation coefficient","Decay rate","Atomic number") corr=new Array("0","1","0","0") comm="" valu="" quest015 = new Question( "Question 15", 0, "The factor that indicates how much attenuation will take place per centimeter is known as the:", resp, comm, corr, "", valu, 1, 0, 0, ""); resp=new Array("Half-value layer","Linear attenuation coefficient","Decay rate","Mass attenuation coefficient") corr=new Array("1","0","0","0") comm="" valu="" quest016 = new Question( "Question 16", 0, "The thickness of any given material where 50% of the incident energy has been attenuated is known as the:", resp, comm, corr, "", valu, 1, 0, 0, ""); resp=new Array("50%","35%","20%","None of the above") corr=new Array("0","0","0","1") comm="" valu="" quest017 = new Question( "Question 17", 0, "After traveling through two half-value layers, the incident radiation has been reduced to: ", resp, comm, corr, "", valu, 1, 0, 0, ""); resp=new Array("Compton scattering, pair production, photoelectric absorption, rayleigh scattering ","Compton scattering, electron exchange, photoelectric absorption, rayleigh scattering
","Electron exchange, pair production, photoelectric absorption, rayleigh scattering
","None of the above
") corr=new Array("1","0","0","0") comm="" valu="" quest018 = new Question( "Question 18", 0, "There are four types of radiation-matter interactions that can contribute to the total attenuation. These are: ", resp, comm, corr, "", valu, 1, 0, 0, ""); resp=new Array("Compton Scattering and photoelectric absorption","Compton Scattering and pair production","Pair production and photoelectric absorption","None of the above") corr=new Array("1","0","0","0") comm="" valu="" quest019 = new Question( "Question 19", 0, "Which two types of radiation-matter interactions account for the majority of attenuation in typical industrial radiography? ", resp, comm, corr, "", valu, 1, 0, 0, ""); resp=new Array("Less contrast sensitivity","Greater contrast sensitivity","Greater amounts of scatter radiation relative to primary beam intensity","Less latitude") corr=new Array("1","0","0","0") comm="" valu="" quest020 = new Question( "Question 20", 0, "In comparison with lower-voltage radiographs, high voltage radiographic images have:", resp, comm, corr, "", valu, 1, 0, 0, ""); resp=new Array("4 mAminutes","2 mAminutes","32 mAminutes","None of the above") corr=new Array("0","0","1","0") comm="" valu="" quest021 = new Question( "Question 21", 0, "A radiograph made with an exposure of 8 mAm produces a density of 1.8. The sensitometric curve shows a difference in relative exposure between a density of 1.8 and the target density of 2.5 is 4. What must the new exposure time be to produce a radiograph with a density of 2.5?", resp, comm, corr, "", valu, 1, 0, 0, ""); resp=new Array("The source to film distance","The source to object distance","The size of the source","All of the above") corr=new Array("0","0","0","1") comm="" valu="" quest022 = new Question( "Question 22", 0, "The amount of geometric unsharpness in a radiograph is affected by:", resp, comm, corr, "", valu, 1, 0, 0, ""); resp=new Array("A longer exposure","A faster film speed","A smaller source spot size","More X-ray energy") corr=new Array("0","0","1","0") comm="" valu="" quest023 = new Question( "Question 23", 0, "When using geometric magnefication to produce a radiograph, the penumbra will be reduced by:", resp, comm, corr, "", valu, 1, 0, 0, ""); resp=new Array("Remove some of the low energy radiation to increase definition","To remove some of the low energy radiation to increase contrast sensitivity","Remove some of the low energy radiation to reduce definition","Both A and B") corr=new Array("1","0","0","0") comm="" valu="" quest024 = new Question( "Question 24", 0, "Radiation beam filters are sometime used in X-ray radiography to:", resp, comm, corr, "", valu, 1, 0, 0, ""); resp=new Array("Reduce the radiation beam spread ","Filter the radiation beam","Increase film latitude","Decrease film latitude") corr=new Array("1","0","0","0") comm="" valu="" quest025 = new Question( "Question 25", 0, "Collimators are used to:", resp, comm, corr, "", valu, 1, 0, 0, ""); resp=new Array("Scattering within the part","Backscatter","Sidescatter","Scattering within the film") corr=new Array("0","0","0","1") comm="" valu="" quest026 = new Question( "Question 26", 0, "Undercut is the loss of resolution at a sharp, thickness transition area due to:", resp, comm, corr, "", valu, 1, 0, 0, ""); resp=new Array("A small number of very defined energies","A continuous spectrum of energies over some range","Radiation of only one energy","None of the above") corr=new Array("0","1","0","0") comm="" valu="" quest027 = new Question( "Question 27", 0, "Bremsstrahlung production of X-rays produces radiation that is composed of:", resp, comm, corr, "", valu, 1, 0, 0, ""); resp=new Array("Bremsstrahlung processes","K-shell emmission processes","Radioactive decay","Both A and B") corr=new Array("0","0","0","1") comm="" valu="" quest028 = new Question( "Question 28", 0, "X-ray generators produce radiation through:", resp, comm, corr, "", valu, 1, 0, 0, ""); resp=new Array("By splitting the nucleus of atoms in the source material","Adding electrons to the source material","Introducing an extra neutron to the atoms of the source material","None of the above") corr=new Array("0","0","1","0") comm="" valu="" quest029 = new Question( "Question 29", 0, "Manmade sources of radioactive sources are produced by:", resp, comm, corr, "", valu, 1, 0, 0, ""); resp=new Array("Cobalt-60 and iridium-192","Cobalt-60 and plutonium-240","Plutonium-240 and uranium-222","Iridium-192 and Lead-102") corr=new Array("1","0","0","0") comm="" valu="" quest030 = new Question( "Question 30", 0, "Two of the more common industrial Gamma-ray sources are:", resp, comm, corr, "", valu, 1, 0, 0, ""); resp=new Array("Metalic silver crystals","Silver halide grains","Both A and B","Neither A or B") corr=new Array("0","1","0","0") comm="" valu="" quest031 = new Question( "Question 31", 0, "Unexposed X-ray film is comprised of a plastic, transparent base coated with an emulsion containing radiation-sensitive particle known as:", resp, comm, corr, "", valu, 1, 0, 0, ""); resp=new Array("With the use of shielding","By increasing distance form the source","By limiting the time exposed to the radiaiton","All of the above") corr=new Array("0","0","0","1") comm="" valu="" quest032 = new Question( "Question 32", 0, "Exposure to ionizing radiation can be limited:", resp, comm, corr, "", valu, 1, 0, 0, ""); resp=new Array("Distance controls","Time limits","Shielding","All of the above") corr=new Array("0","0","1","0") comm="" valu="" quest033 = new Question( "Question 33", 0, "Stationary lab or shop X-ray systems usually rely on what to limit exposure to the radiation?� ", resp, comm, corr, "", valu, 1, 0, 0, ""); resp=new Array("The sharpness of lines in a radiograph","The differences in photographic density in a radiograph","The average photographic density in a radiograph","The difference in density between two different radiographs") corr=new Array("0","1","0","0") comm="" valu="" quest034 = new Question( "Question 34", 0, "Radiographic contrast describe:", resp, comm, corr, "", valu, 1, 0, 0, ""); resp=new Array("Attenuation differences in the component being inspected","The wavelength of the radiaiton used","The amount of scattered radiation","The level of current used for the exposure") corr=new Array("0","0","0","1") comm="" valu="" quest035 = new Question( "Question 35", 0, "Which of the following does not affect radiographic contrast?", resp, comm, corr, "", valu, 1, 0, 0, ""); resp=new Array("The type of film used","The process by which the film was developed","The radiation energy used","Both A and B") corr=new Array("0","0","0","1") comm="" valu="" quest036 = new Question( "Question 36", 0, "Film contrast is determined by:", resp, comm, corr, "", valu, 1, 0, 0, ""); resp=new Array("Less latitude","Higher contrast sensitivity ","A Longer exposure time","All of the above") corr=new Array("0","0","0","1") comm="" valu="" quest037 = new Question( "Question 37", 0, "Lowering the energy of the radiation used to produce a radiograph will generally result in:", resp, comm, corr, "", valu, 1, 0, 0, ""); resp=new Array("Volumetric defects such as porosity","Tight linear defects such as cracks","Material delaminations","The flaw type does not matter") corr=new Array("1","0","0","0") comm="" valu="" quest038 = new Question( "Question 38", 0, "When flaws are in unknown locations, radiography is best suited for the detection of:", resp, comm, corr, "", valu, 1, 0, 0, ""); resp=new Array("Higher image contrast sensitivity","Inspection can be performed more rapidly","Higher image definition","Lower equipment costs") corr=new Array("0","1","0","0") comm="" valu="" quest039 = new Question( "Question 39", 0, "The main advantage of real-time radiography over film is:", resp, comm, corr, "", valu, 1, 0, 0, ""); resp=new Array("Resolution and contrast sensitivity","Resolution and film latitude","Contrast sensitivity and latitude","Contrast sensitivity only") corr=new Array("1","0","0","0") comm="" valu="" quest040 = new Question( "Question 40", 0, "Image quality indicators (IQIs) provide information about the level of:", resp, comm, corr, "", valu, 1, 0, 0, ""); resp=new Array("It is not limited to material type ","It can be used to inspect assembled components","It can detect surface and subsurface features","Access to both side of the test sample is required") corr=new Array("0","0","0","1") comm="" valu="" quest041 = new Question( "Question 41", 0, "Which of the following is not a strength of radiographic inspection?", resp, comm, corr, "", valu, 1, 0, 0, ""); resp=new Array("Lighter than the surrounding area","Darker than the surrounding area","More defined than the surrounding area","Less defined than the sorrounding area") corr=new Array("1","0","0","0") comm="" valu="" quest042 = new Question( "Question 42", 0, "On a film radiograph, an area of high density in the test component will appear:", resp, comm, corr, "", valu, 1, 0, 0, ""); resp=new Array("They act as a filter to harden the radiation beam","They reduce the amount of scatter radiation","Incident radiation liberates electrons which help to expose the film","None of the above") corr=new Array("0","0","1","0") comm="" valu="" quest043 = new Question( "Question 43", 0, "Thin sheets of lead foil in contact with the film during exposure increase the film density because:", resp, comm, corr, "", valu, 1, 0, 0, ""); resp=new Array("Anywhere on the back side of the film","On the front side of the film near the primary area of interest","On the front side of the test component in an area of similar thickness to the primary area of interest","On the back side of the test component in the area of interest") corr=new Array("0","0","1","0") comm="" valu="" quest044 = new Question( "Question 44", 0, "Image quality indicators are usually placed:", resp, comm, corr, "", valu, 1, 0, 0, ""); resp=new Array("The crack is large","The test componet is a casting ","The test component is a weldment","The orientation of the crack is known") corr=new Array("0","0","0","1") comm="" valu="" quest045 = new Question( "Question 45", 0, "Radiographic inspection should be used for crack detection only when:", resp, comm, corr, "", valu, 1, 0, 0, ""); resp=new Array("Viewed in various cross-sectional slices","Viewed from different angles","Analyzed for chemical composition ","None of the above") corr=new Array("1","0","0","0") comm="" valu="" quest046 = new Question( "Question 46", 0, "Computed tomography X-ray techniques allow the test component to be:", resp, comm, corr, "", valu, 1, 0, 0, ""); resp=new Array("Turn on and shut off the gamma rays from a safe distance","Adjust the position of the camera from a safe distance","Move the source in and out of the camera while maintaining a safe distance","None of the above") corr=new Array("0","0","1","0") comm="" valu="" quest047 = new Question( "Question 47", 0, "The drive cable of a gamma ray exposure device (camera) allows the radiographer to:", resp, comm, corr, "", valu, 1, 0, 0, ""); resp=new Array("It has a high atomic mass which will result in more X-rays being generated due to atomic particle interactions ","It is an inexpensive material that is easy to machine","It have very high thermal conductivity which makes it easy to cool","None of the above") corr=new Array("1","0","0","0") comm="" valu="" quest048 = new Question( "Question 48", 0, "The target of an X-ray tube is often made out of tungsten becuase:", resp, comm, corr, "", valu, 1, 0, 0, ""); resp=new Array("Speed","Incident Intensity","Penetrating power","Both B and C") corr=new Array("0","0","1","0") comm="" valu="" quest049 = new Question( "Question 49", 0, "Higher energy radiation will have more:", resp, comm, corr, "", valu, 1, 0, 0, ""); resp=new Array("Intensity","Activity","Energy levels","None of the above") corr=new Array("0","0","1","0") comm="" valu="" quest050 = new Question( "Question 50", 0, "A specific radioactive source will always produce gamma rays at the same:", resp, comm, corr, "", valu, 1, 0, 0, ""); questions = new Array ( quest001,quest002,quest003,quest004,quest005,quest006,quest007,quest008,quest009,quest010,quest011,quest012,quest013,quest014,quest015,quest016,quest017,quest018,quest019,quest020,quest021,quest022,quest023,quest024,quest025,quest026,quest027,quest028,quest029,quest030,quest031,quest032,quest033,quest034,quest035,quest036,quest037,quest038,quest039,quest040,quest041,quest042,quest043,quest044,quest045,quest046,quest047,quest048,quest049,quest050) function doQuestion(quest) { var numdo; var numord=eval(quest+1); var i=-1, ii, type, myname, gadget; type=questions[quest].type; numdo=type>=3?1:questions[quest].response.length; document.writeln ("") document.write("\n") document.write(" \n") document.write(" \n") document.write(" \n") document.write(" \n") document.write(" \n") document.write(" \n") document.write(" \n") document.write(" \n") document.write(" \n") document.write(" \n") document.write(" \n") document.write(" \n") document.write(" \n") document.write(" \n") document.write(" \n") document.write(" \n") document.write(" \n") document.write(" \n") document.write(" \n") document.write(" \n") document.write(" \n") document.write(" \n") document.write(" \n") document.write(" \n") document.write(" \n") document.write(" \n") document.write(" \n") document.write(" \n") document.write("

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You have made the following errors

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�Results

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