LXMO Exam Questions & Answer 100%
Verified
Rectification Constant Correct answer-A value of the heat unit formula
that varies depending on the generator used.
Generators used in Radiography Correct answer-single phase generator
delivers pulsating x-ray beam (1), Three phase generator = 3 ph...
LXMO Exam Questions & Answer 100%
Verified
Rectification Constant Correct answer-A value of the heat unit formula
that varies depending on the generator used.
Generators used in Radiography Correct answer-single phase generator
delivers pulsating x-ray beam (1), Three phase generator = 3 phase 6 pulse
machine (1.35) , High frequency generator = 3 phase 12 pulse machine (1.41)
Rectification Correct answer-The rectifier of the x-ray tube changes
alternating current (AC) to direct current (DC). This process ensures that the x-
ray production flows in the right direction; from the filament to the target.
Heat Unit (HUs) Formula Correct answer-KVP x MA x Time x (rectification
constant) = HUs
Cumulative MPD Correct answer-Cumulative Maximum Permissible Dose
is the total amount of radiation that an x-ray worker could have been exposed to
since the age of 18 according to NCRP (National Council on Radiation
protection.)
, LXMO Exam Questions & Answer 100%
Verified
Cumulative MPD Formula Correct answer-CMPD = 5 (N-18) The "N" in the
equation refers to the current age of the worker, always subtract 18 from the
current age before multiplying by 5. 5 refers to the number of REMS per year
that is max for worker.
Inverse square law Correct answer-The closer you are to the source of
radiation, the more exposure you will receive and vice-versa. As distance
increases, exposure decreases; as distance decreases, exposure increases.
Inverse square law formula Correct answer-i1/ i2 = (D2)2 / (D1)2 i2 will be
the unknown (x). To make it easier to solve, square the values first the cross
multiply and divide.
Ampere "A" Correct answer-Unit used to measure the rate, or volume, of
current flow in the circuit. X-ray circuit contains 0.3 A
Potential Difference Correct answer-Is the force or speed of the electron
flow in the current. The volt "V" is used to measure the potential difference. x-
ray circuit contains 120,000V
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