Rad112 Chapter 5 Quiz PDF

**RAD112 Chapter 5 Quiz** [RAD 0724\_RAD 112 Radiation Physics and Radiobiology I](https://lms.stellarcollege.edu/course/view.php?id=1811#section-6) Top of Form Question **1** The stationary anode includes an area of \_\_\_\_\_\_\_\_\_\_\_ embedded in a copper rod. tungsten  Question **2** Th...

**RAD112 Chapter 5 Quiz** [RAD 0724\_RAD 112 Radiation Physics and Radiobiology I](https://lms.stellarcollege.edu/course/view.php?id=1811#section-6) Top of Form Question **1** The stationary anode includes an area of \_\_\_\_\_\_\_\_\_\_\_ embedded in a copper rod. tungsten  Question **2** The most common x-ray tube target angle is 12 degrees.  Question **3** Tungsten is used to coat the anode disc because it has a high melting point.  Question **4** The motor that turns the anode operates through mutual induction.  Question **5** Electrons from the cathode that do not produce x-rays will continue as current flow through the circuit.  Question **6** After lengthy exposures, the x-ray tube on a mobile fluoroscopic unit may become very hot.  Question **7** In terms of the x-ray tube, envelope is another name for the glass or metal enclosure.  Question **8** To take advantage of the anode heel effect, the thicker part of the anatomy is being imaged. should be placed under the anode end of the tube. False. Question **9** The stationary anode includes an area of tungsten embedded in a copper rod.  Question **10** The protective tube housing helps to keep the tube cool. , prevent electrical shocks to the radiographer. , limit leakage radiation. & provide solid, stable mechanical support. all of these.  Question **11** The portion of the induction motor that is made of electromagnets that are energized in opposing pairs and induce an electric current with associated magnetic field is the stator.  Question **12** The focusing cup is part of the secondary circuit.  Question **13** Most x-ray tube target angles range between 7 and 18 degrees.  Question **14** One of the reasons that molybdenum is used in rotating anodes is because it is light but strong.  Question **15** The cathode includes a focusing cup., provides electrons for x-ray production., includes filaments. all of these.  Question **16** The physical area of the target where electrons strike is the effective focal spot.  False,  True Question **17** The melting point of tungsten is 3400 °C.  Question **18** Copper can be found \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_ of the rotating anode. in the shaft  Question **19** The positive end of the x-ray tube is the anode.  Question **20** Glass enclosures are typically made of borosilicate glass (Pyrex) because it is very heat-resistant.  Question **21** Which of the following helps to keep the x-ray tube cool on the inside of the protective housing? Cooling fans and an oil bath  Question **22** If the anode angle becomes too small, which of the following may result? X-ray beam size may start to be limited, the intensity of the beam near the anode may be reduced, The anode heel effect may be seen. All of these.  Question **23** For the covering of the rotating anode disc, \_\_\_\_\_\_\_\_\_\_\_\_\_ may be added to tungsten to increase thermal capacity and tensile strength. rhenium  Question **24** The best situation for less heat production and a quality image is to have a: 1\. small actual focal spot 2\. large actual focal spot 3\. small effective focal spot large actual focal spot and small effective focal spot.  Question **25** The primary purpose of the glass or metal enclosure is to maintain a vacuum within the tube.  Question **26** The portion of the induction motor that is outside the tube enclosure is the stator.  Question **27** Molybdenum is found in the \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_ of the rotating anode. base and disc  Question **28** Molybdenum is a poor thermal conductor.  Question **29** The protective tube housing is lined with lead. Question **30** By regulation, x-ray tube leakage radiation can be no more than 100 mR per hour at a distance of one meter.  Bottom of Form