RT Level III Practice Exam questions with verified
answers
.50 Ans✓✓✓ Refer to specification 3.4 and 3.4.1 and fig 13. For a half
inch thick weld joint, what is the number that should appear on the IQI?
.50 Ans✓✓✓ Refer to specification, 3.4 and 3.4.1 an fig 13. For a half
inch thick weld joint, what is the number that should appear on the IQI?
0.005 inch Ans✓✓✓ Refer to specification, 3.4. What penetrameter
thickness would be required for a 0.25 inch thick part?
0.005 inch Ans✓✓✓ Refer to the specification, 3.4. What penetrameter
thickness would be required for a 0.25 inch thick part?
0.005 inches Ans✓✓✓ Given the specimen thickness is 1 inch, the
source size is 1/9 inch diameter, and the SOD is 24 inches, what is the
geometric unsharpness?
0.010 Ans✓✓✓ Film emulsion thickness is generally __(blank)__ inch
thick.
0.010 thick penetrameter and 0.375 inch shim Ans✓✓✓ According to
th e specification, given a 0.5 inch thick weld joint with a 0.375 inch
backing bar in place is to be radiographed, what would be the
appropriate penetrameter and shim, if needed, for that shot?
,0.014 inch Ans✓✓✓ What is the geometric unsharpness of the image of
an object located 2 inches below the source side surface (away from the
film) of a 3 inch thick test obkect when rediographed with an 8 mm
(0.315 inch) focal spot at 24 i nches focus-to-film?
0.014 inch Ans✓✓✓ What is the unsharpness of a discontinuity located
1 inch from the bottom of a 3 inch thick part when a radiograph is shot
with a 24 inch SFD and 0.0315 inch focal spot?
0.029 inch Ans✓✓✓ What is the unsharpness of a discontinuity located
2 inches from the bottom of a 3 inch part when a radiograph is shot with
a 24 inch SFD and a 0.315 inch focal spot?
0.0625 Ans✓✓✓ Refer to specification. fig 11. Using X-ray the
minimum size of the hole that shall be detected shall be _(blank)__ for a
0.5 inch thick part?
0.0625 for X-ray and 0.09375 for gamma ray Ans✓✓✓ Refer to
specification, fig 11. When examining a 0.5 inch thick part what are the
minimum sizes of the 3T and 4T holes?
0.09375 Ans✓✓✓ Refer to specification, fig 11. Using gamma ray the
minimum size of the hole that shall be detected shall be __(blank)__ for
a 0.5 inch thick part?
, 0.13 Ans✓✓✓ Given the exposure times for the 0.25 and 0.45 inch
shims for Material C in table 3 the half layer thickness for the material is
__(blank)__
1.2 hr Ans✓✓✓ How long could you work in an area given an exposure
rate of 13.27 mR/hr if you are not allowed to receive any more than 16
mR per day?
1.3 R/Ci Ans✓✓✓ A Co60 source puts out 1.3 R/hr per Ci at 1 m. After
10.6 years the output per Ci of a 70 Ci source will be __(blank)__.
"Read what it is asking for carefully"
1.97 Ans✓✓✓ How may HVLs are represented by 0.375 inches of lead
when using an lr192 source?
1000 KV Ans✓✓✓ Which of the following would cause the least
unsharpness?
2 inch Ans✓✓✓ Refer to table 1. At 220 KV a one inch thick layer of
zirconium is to be shot using an exposure chart for steel at the same KV.
What thickness would be used on the chart to determine the required
exposure?
2 inch of steel at 220 KV Ans✓✓✓ A 1 inch thick Zirconium part
would be shot the same way as __(blank)__
answers
.50 Ans✓✓✓ Refer to specification 3.4 and 3.4.1 and fig 13. For a half
inch thick weld joint, what is the number that should appear on the IQI?
.50 Ans✓✓✓ Refer to specification, 3.4 and 3.4.1 an fig 13. For a half
inch thick weld joint, what is the number that should appear on the IQI?
0.005 inch Ans✓✓✓ Refer to specification, 3.4. What penetrameter
thickness would be required for a 0.25 inch thick part?
0.005 inch Ans✓✓✓ Refer to the specification, 3.4. What penetrameter
thickness would be required for a 0.25 inch thick part?
0.005 inches Ans✓✓✓ Given the specimen thickness is 1 inch, the
source size is 1/9 inch diameter, and the SOD is 24 inches, what is the
geometric unsharpness?
0.010 Ans✓✓✓ Film emulsion thickness is generally __(blank)__ inch
thick.
0.010 thick penetrameter and 0.375 inch shim Ans✓✓✓ According to
th e specification, given a 0.5 inch thick weld joint with a 0.375 inch
backing bar in place is to be radiographed, what would be the
appropriate penetrameter and shim, if needed, for that shot?
,0.014 inch Ans✓✓✓ What is the geometric unsharpness of the image of
an object located 2 inches below the source side surface (away from the
film) of a 3 inch thick test obkect when rediographed with an 8 mm
(0.315 inch) focal spot at 24 i nches focus-to-film?
0.014 inch Ans✓✓✓ What is the unsharpness of a discontinuity located
1 inch from the bottom of a 3 inch thick part when a radiograph is shot
with a 24 inch SFD and 0.0315 inch focal spot?
0.029 inch Ans✓✓✓ What is the unsharpness of a discontinuity located
2 inches from the bottom of a 3 inch part when a radiograph is shot with
a 24 inch SFD and a 0.315 inch focal spot?
0.0625 Ans✓✓✓ Refer to specification. fig 11. Using X-ray the
minimum size of the hole that shall be detected shall be _(blank)__ for a
0.5 inch thick part?
0.0625 for X-ray and 0.09375 for gamma ray Ans✓✓✓ Refer to
specification, fig 11. When examining a 0.5 inch thick part what are the
minimum sizes of the 3T and 4T holes?
0.09375 Ans✓✓✓ Refer to specification, fig 11. Using gamma ray the
minimum size of the hole that shall be detected shall be __(blank)__ for
a 0.5 inch thick part?
, 0.13 Ans✓✓✓ Given the exposure times for the 0.25 and 0.45 inch
shims for Material C in table 3 the half layer thickness for the material is
__(blank)__
1.2 hr Ans✓✓✓ How long could you work in an area given an exposure
rate of 13.27 mR/hr if you are not allowed to receive any more than 16
mR per day?
1.3 R/Ci Ans✓✓✓ A Co60 source puts out 1.3 R/hr per Ci at 1 m. After
10.6 years the output per Ci of a 70 Ci source will be __(blank)__.
"Read what it is asking for carefully"
1.97 Ans✓✓✓ How may HVLs are represented by 0.375 inches of lead
when using an lr192 source?
1000 KV Ans✓✓✓ Which of the following would cause the least
unsharpness?
2 inch Ans✓✓✓ Refer to table 1. At 220 KV a one inch thick layer of
zirconium is to be shot using an exposure chart for steel at the same KV.
What thickness would be used on the chart to determine the required
exposure?
2 inch of steel at 220 KV Ans✓✓✓ A 1 inch thick Zirconium part
would be shot the same way as __(blank)__
