Radiation Physics Midterm – JPU Questions and
Answers (Latest Update, Graded A+)
Introduction:
This document is a complete midterm review guide for the Radiation
Physics course at JPU, containing the latest and most accurate
questions with verified answers. It covers key topics such as x-ray
production, atomic structure, electromagnetic radiation, and the
physics of ionization. Students will find detailed Q&A explanations
on radiation safety principles (ALARA, shielding, dosimetry), laws of
electricity and magnetism, radiation measurement units, and
diagnostic imaging fundamentals. The material also includes applied
questions on nuclear physics, radiation therapy, radiation detection
instruments, and health effects of exposure—making it ideal for exam
preparation and professional review in radiologic sciences.
Exam Questions and Answers
Which of the following components is responsible for regulation of
kVp? --- correct answer ---Autotransformer
The reduction of radiation intensity due to scattering and
absorption is called _____. --- correct answer ---attenuation
A rectifier... --- correct answer ---is typically made of silicon
,Where in the x-ray circuit is the step-up transformer located? ---
correct answer ---High-voltage side
Which of the following is not a basic characteristic of the wave
equation? --- correct answer ---energy
What unit of measurement is used to express absorbed dose? ---
correct answer ---Gray (Gy)
An alternating (AC) current is represented by a __________ line. ---
correct answer ---sinusoidal
Electric insulators --- correct answer ---inhibit movement of
electrical charge
All of the following are true of transformers EXCEPT --- correct
answer ---Multiple choice:
They have no moving parts.
(Answer:) They work most efficiently on pulsating DC.
They work on the principle of mutual induction.
They are designed to regulate voltage.
, The most accurate type of timer is the ________ timer. --- correct
answer ---electronic timer
What does ALARA mean? --- correct answer ---As Low As
Reasonably Achievable
The rate of rise and fall of a sine wave is called its __________. ---
correct answer ---Frequency
Which tube suspension system offers the greatest multidirectional
movement? --- correct answer ---overhead tube suspension system
A Half-wave rectified voltage ripple is: --- correct answer ---100%
A High frequency rectified voltage ripple is: --- correct answer ---
<1%
A three phase 6 pulsed rectified voltage ripple is: --- correct
answer ---13%
A three phase 12 pulsed rectified voltage ripple is: --- correct
answer ---4%
Answers (Latest Update, Graded A+)
Introduction:
This document is a complete midterm review guide for the Radiation
Physics course at JPU, containing the latest and most accurate
questions with verified answers. It covers key topics such as x-ray
production, atomic structure, electromagnetic radiation, and the
physics of ionization. Students will find detailed Q&A explanations
on radiation safety principles (ALARA, shielding, dosimetry), laws of
electricity and magnetism, radiation measurement units, and
diagnostic imaging fundamentals. The material also includes applied
questions on nuclear physics, radiation therapy, radiation detection
instruments, and health effects of exposure—making it ideal for exam
preparation and professional review in radiologic sciences.
Exam Questions and Answers
Which of the following components is responsible for regulation of
kVp? --- correct answer ---Autotransformer
The reduction of radiation intensity due to scattering and
absorption is called _____. --- correct answer ---attenuation
A rectifier... --- correct answer ---is typically made of silicon
,Where in the x-ray circuit is the step-up transformer located? ---
correct answer ---High-voltage side
Which of the following is not a basic characteristic of the wave
equation? --- correct answer ---energy
What unit of measurement is used to express absorbed dose? ---
correct answer ---Gray (Gy)
An alternating (AC) current is represented by a __________ line. ---
correct answer ---sinusoidal
Electric insulators --- correct answer ---inhibit movement of
electrical charge
All of the following are true of transformers EXCEPT --- correct
answer ---Multiple choice:
They have no moving parts.
(Answer:) They work most efficiently on pulsating DC.
They work on the principle of mutual induction.
They are designed to regulate voltage.
, The most accurate type of timer is the ________ timer. --- correct
answer ---electronic timer
What does ALARA mean? --- correct answer ---As Low As
Reasonably Achievable
The rate of rise and fall of a sine wave is called its __________. ---
correct answer ---Frequency
Which tube suspension system offers the greatest multidirectional
movement? --- correct answer ---overhead tube suspension system
A Half-wave rectified voltage ripple is: --- correct answer ---100%
A High frequency rectified voltage ripple is: --- correct answer ---
<1%
A three phase 6 pulsed rectified voltage ripple is: --- correct
answer ---13%
A three phase 12 pulsed rectified voltage ripple is: --- correct
answer ---4%
