LRA 211 COMPREHENSIVE ASSESSMENT
2026 COMPLETE QUESTIONS AND
ANSWERS
◉ The negative end of the x-ray tube is the
Answer: cathode
◉ The anode includes the
Answer: target and induction motor
◉ The cathode includes the
Answer: Filaments and focusing cup
◉ The primary purpose of the glass or metal enclosure is to
Answer: Maintain the vacuum
◉ Glass enclosures are typically made of borosilicate glass (Pyrex)
because
Answer: It is very heat-resistant
◉ The area of the envelope where x-rays should exit the tube is the
, Answer: Window
◉ The target window is usually approximately
Answer: 5 cm^2
◉ The two types of anode designs are stationary and
Answer: rotating
◉ The stationary anode includes an area of tungsten embedded in
Answer: A copper rod
◉ The primary disadvantage to the stationary anode is that it
Answer: Heats up too quickly during x-ray production
◉ X-ray tubes with a stationary anode design may be found today
Answer: In medical areas that only need small x-ray exposures
◉ The rotating anode design uses a disc whose core is made of
Answer: Molybdenum
◉ One of the reasons that molybdenum is used in rotating anodes is
because it is
2026 COMPLETE QUESTIONS AND
ANSWERS
◉ The negative end of the x-ray tube is the
Answer: cathode
◉ The anode includes the
Answer: target and induction motor
◉ The cathode includes the
Answer: Filaments and focusing cup
◉ The primary purpose of the glass or metal enclosure is to
Answer: Maintain the vacuum
◉ Glass enclosures are typically made of borosilicate glass (Pyrex)
because
Answer: It is very heat-resistant
◉ The area of the envelope where x-rays should exit the tube is the
, Answer: Window
◉ The target window is usually approximately
Answer: 5 cm^2
◉ The two types of anode designs are stationary and
Answer: rotating
◉ The stationary anode includes an area of tungsten embedded in
Answer: A copper rod
◉ The primary disadvantage to the stationary anode is that it
Answer: Heats up too quickly during x-ray production
◉ X-ray tubes with a stationary anode design may be found today
Answer: In medical areas that only need small x-ray exposures
◉ The rotating anode design uses a disc whose core is made of
Answer: Molybdenum
◉ One of the reasons that molybdenum is used in rotating anodes is
because it is
