CWB Module 18 Radiographic
inspection Exam Questions and
Answers Verified Solutions Latest
Update (2026/2027)
Question:
True or False
Answer:
False, both are electromagnetic
Question:
2. List 3 disadvantages of radiography over other inspection methods
Answer:
Bulky
equipment, special safety precautions, some defects not reliably detected
Question:
Exercise Questions - Section 1-2.5
3. Sketch the main components of an Xray machine then compare your
sketch with that shown
in figure 2.5
Answer:
see figure 2.5
,Question:
Exercise Questions - Section 1-2.5
4. The effect of increasing the voltage (kV) in an Xray machine is to:
a) increase the xray beam intensity without changing its wavelength
b) decrease the intensity and shorten the wavelength
c) increase the intensity and shorten the wavelength
Answer:
c) increase the intensity
and shorten the wavelength
Question:
5. Do gamma rays generally have a greater or lesser ability to penetrate
thick steel than x rays? -
Answer:
Greater
Question:
6. List 3 disadvantages of gamma rays over Xray radiography?
Answer:
See table 2.3
Question:
, Exercise Questions - Section 2.6-2.9
1. For a given intensity of Xays striking a specimen, what are the 2 main
factors that affect the
intensity that emerges from the specimen to strike the film?
Answer:
Thickness and
type of material
Question:
Exercise Questions - Section 2.6-2.9
2. Which of the following conditions gives the better image contrast?
a) A low energy level with adequately long exposure time
b) A high energy level with a shorter exposure time
Answer:
a) A low energy level with
adequately long exposure time
Question:
Exercise Questions - Section 2.6-2.9
3. Place the following in order of increasing absorption of Xrays:
a) steel
b) tungsten
c) welding slag
Answer:
c) welding slag
Question:
inspection Exam Questions and
Answers Verified Solutions Latest
Update (2026/2027)
Question:
True or False
Answer:
False, both are electromagnetic
Question:
2. List 3 disadvantages of radiography over other inspection methods
Answer:
Bulky
equipment, special safety precautions, some defects not reliably detected
Question:
Exercise Questions - Section 1-2.5
3. Sketch the main components of an Xray machine then compare your
sketch with that shown
in figure 2.5
Answer:
see figure 2.5
,Question:
Exercise Questions - Section 1-2.5
4. The effect of increasing the voltage (kV) in an Xray machine is to:
a) increase the xray beam intensity without changing its wavelength
b) decrease the intensity and shorten the wavelength
c) increase the intensity and shorten the wavelength
Answer:
c) increase the intensity
and shorten the wavelength
Question:
5. Do gamma rays generally have a greater or lesser ability to penetrate
thick steel than x rays? -
Answer:
Greater
Question:
6. List 3 disadvantages of gamma rays over Xray radiography?
Answer:
See table 2.3
Question:
, Exercise Questions - Section 2.6-2.9
1. For a given intensity of Xays striking a specimen, what are the 2 main
factors that affect the
intensity that emerges from the specimen to strike the film?
Answer:
Thickness and
type of material
Question:
Exercise Questions - Section 2.6-2.9
2. Which of the following conditions gives the better image contrast?
a) A low energy level with adequately long exposure time
b) A high energy level with a shorter exposure time
Answer:
a) A low energy level with
adequately long exposure time
Question:
Exercise Questions - Section 2.6-2.9
3. Place the following in order of increasing absorption of Xrays:
a) steel
b) tungsten
c) welding slag
Answer:
c) welding slag
Question:
