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LRA 222 FINAL EXAM LATEST 2026 ACTUAL EXAM WITH COMPLETE
QUESTIONS AND CORRECT DETAILED ANSWERS (100% VERIFIED
ANSWERS) |ALREADY GRADED A+| ||PROFESSOR VERIFIED||
||BRANDNEW!!!||
Which x-ray generator has the lowest power rating? - ANSWER-
Single-phase
How many windings does the auto transformer have? - ANSWER-
1
Should the thickest part or the thinnest part be placed under
cathode? - ANSWER-Thickest
Are long or short exposure times more likely to cause to failure -
ANSWER-Long
Localized, potting, or cracking on the anode can be caused by
what? - ANSWER-A single excessive exposure
What causes the anode heal effect? - ANSWER-Xray absorption
within the anode
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True or False? As an x-ray to gets older, the inside may become
coded with tungstun, and which can cause arcing in the tube. -
ANSWER-True
Are the stators on the inside or the outside of the glass envelope?
- ANSWER-Outside
The ___ is the source of radiation in the xray tube - ANSWER-
focal spot
What does the tube rating show? - ANSWER-Longest exposure
time of xray tube can be energized without overheating
What creates space charge? - ANSWER-The heating of the
filament which boils off electrons
What is the target of the rotating and usually coated with? -
ANSWER-Tungsten
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What is the most common cause for tube failure? - ANSWER-
tungsten vaporization
High capacity tube rotors revolve at _____ rpm. - ANSWER-
10,000
How many filaments does a dual focus tube have? - ANSWER-2
Is the filament on the positive or negative side of the tube? -
ANSWER-Negative
What is a filament made of? - ANSWER-Tungsten
What are the components of the anode? - ANSWER-stator and
rotor
What are the components of the cathode? - ANSWER-filament
and focusing cup
, 4|Page
With the rotating anode the focal spot becomes what? -
ANSWER-Focal track
Why does the focusing cup keep the electrons together? -
ANSWER-Repelling them into a group bc negative repels
negative
What is the stator made of? - ANSWER-electromagnets
What happens to the tube if you prep the rotor, but do not expose
an x-ray often? - ANSWER-Damage
Where is the main power switch located? - ANSWER-primary
circuit
Where is the primary side of the high voltage transformer found? -
ANSWER-primary circuit
Where is the timer circuit found? - ANSWER-primary circuit
LRA 222 FINAL EXAM LATEST 2026 ACTUAL EXAM WITH COMPLETE
QUESTIONS AND CORRECT DETAILED ANSWERS (100% VERIFIED
ANSWERS) |ALREADY GRADED A+| ||PROFESSOR VERIFIED||
||BRANDNEW!!!||
Which x-ray generator has the lowest power rating? - ANSWER-
Single-phase
How many windings does the auto transformer have? - ANSWER-
1
Should the thickest part or the thinnest part be placed under
cathode? - ANSWER-Thickest
Are long or short exposure times more likely to cause to failure -
ANSWER-Long
Localized, potting, or cracking on the anode can be caused by
what? - ANSWER-A single excessive exposure
What causes the anode heal effect? - ANSWER-Xray absorption
within the anode
,2|Page
True or False? As an x-ray to gets older, the inside may become
coded with tungstun, and which can cause arcing in the tube. -
ANSWER-True
Are the stators on the inside or the outside of the glass envelope?
- ANSWER-Outside
The ___ is the source of radiation in the xray tube - ANSWER-
focal spot
What does the tube rating show? - ANSWER-Longest exposure
time of xray tube can be energized without overheating
What creates space charge? - ANSWER-The heating of the
filament which boils off electrons
What is the target of the rotating and usually coated with? -
ANSWER-Tungsten
,3|Page
What is the most common cause for tube failure? - ANSWER-
tungsten vaporization
High capacity tube rotors revolve at _____ rpm. - ANSWER-
10,000
How many filaments does a dual focus tube have? - ANSWER-2
Is the filament on the positive or negative side of the tube? -
ANSWER-Negative
What is a filament made of? - ANSWER-Tungsten
What are the components of the anode? - ANSWER-stator and
rotor
What are the components of the cathode? - ANSWER-filament
and focusing cup
, 4|Page
With the rotating anode the focal spot becomes what? -
ANSWER-Focal track
Why does the focusing cup keep the electrons together? -
ANSWER-Repelling them into a group bc negative repels
negative
What is the stator made of? - ANSWER-electromagnets
What happens to the tube if you prep the rotor, but do not expose
an x-ray often? - ANSWER-Damage
Where is the main power switch located? - ANSWER-primary
circuit
Where is the primary side of the high voltage transformer found? -
ANSWER-primary circuit
Where is the timer circuit found? - ANSWER-primary circuit
