ASNT Study Guide - Industrial
Radiography Radiation Safety
The acronym rem stands for:
a. radiation equivalent man
b. radiation effect man
c. roentgen effect man
d. roentgen equivalent man - CORRECT ANSWER-d. roentgen equivalent man
The initialism QF stands for:
a. quantity factor
b. quality frequency
c. quality factor
d. quality effective factor - CORRECT ANSWER-c. quality factor
The quality factor for X-rays and gamma rays is:
a. 1
b. 2
c. 10
d. 20 - CORRECT ANSWER-a. 1
The quality factor for alpha (ray) particles is:
a. 1
b. 2
c. 10
d. 20 - CORRECT ANSWER-d. 20
Activity of radioactive material is measured in:
a. curies
b. roentgens
c. sieverts
d. grays - CORRECT ANSWER-a. curies
Becquerels and curies are units of measurement of:
a. physical size of the source
b. gray per hour
,c. decay rate
d. roentgen per hour - CORRECT ANSWER-c. decay rate
Atoms that have excess energy and are unstable are known as:
a. radioactive
b. radioactivity
c. balanced
d. weighted - CORRECT ANSWER-a. radioactive
Elementary particles units with a negative electrical charge and a mass approximately
equal to 1/1840 that of a proton are:
a. electrons
b. protons
c. neutrons
d. valence shells - CORRECT ANSWER-a. electrons
Positively charged elementary particles with a mass approximately equal to 1840 times
that of an electron, or 1 AMU, are known as:
a. electrons
b. protons
c. neutrons
d. valence shells - CORRECT ANSWER-b. protons
Uncharged elementary particles with a mass nearly equal to that of a proton are called:
a. electrons
b. protons
c. neutrons
d. valence shells - CORRECT ANSWER-c. neutrons
The area known as the center of an atom is called the:
a. electron
b. nucleus
c. proton
d. neutron - CORRECT ANSWER-b. nucleus
Any byproduct material that is encased in a capsule designed to prevent leakage or
escape of the byproduct material is a:
a. drum
b. pig
c. sealed source
,d. container - CORRECT ANSWER-c. sealed source
A tube through which the radioactive source travels when inside a radiographic
exposure device is a/an:
a. port tube
b. guide tube
c. S tube
d. exit tube - CORRECT ANSWER-c. S tube
The Symbol R means:
a. rem
b. rad
c. roentgen
d. radiation - CORRECT ANSWER-c. roentgen
The acronym rad means:
a. radiation absorbed dose
b. roentgen absorbed dose
c. roentgen acquired dose
d. radiation at death - CORRECT ANSWER-a. radiation absorbed dose
The roentgen (R) exposure is measured in:
a. tissue
b. water
c. a lab
d. air - CORRECT ANSWER-d. air
The symbol mR means:
a. milliroentgen
b. microroentgen
c. megaroentgen
d. millirem - CORRECT ANSWER-a. milliroentgen
One roentgen or 1 R is equal to:
a. 100 milliroentgen
b. 1000 milliroentgen
c. 0.001 milliroentgen
d. 1 milliroentgen - CORRECT ANSWER-b. 1000 milliroentgen
, Survey meters must be calibrated at intervals not to exceed:
a. three months and/or after instrument servicing except for battery changes
b. six months and/or after instrument servicing except for battery changes
c. annually and after instrument servicing except for battery changes
d. daily and after instrument servicing except for battery changes - CORRECT
ANSWER-b. six months and/or after instrument servicing except for battery changes
A survey meter must be capable of measuring a range of:
a. 0 to 1000 mR/h (0 to 10 mSv/h)
b. 2 to 1000 R/h (0.02 to 10 Sv/h)
c. 0 to 1000 R/h (0 to 10 Sv/h)
d. 2 to 1000 mR/h (0.02 to 10 mSv/h) - CORRECT ANSWER-d. 2 to 1000 mR/h (0.02 to
10 mSv/h)
Becquerels and curies are units of measurement of:
a. physical size of the source
b. activity
c. gray per hour
d. roentgen per hour - CORRECT ANSWER-b. activity
An analog survey meter must be calibrated on each scale at two points approximately:
a. 33% and 66% of the scale's potential
b. 25% and 75% of the scale's potential
c. through the full range of the scale's potential
d. at the midpoint of the scale's potential - CORRECT ANSWER-a. 33% and 66% of the
scale's potential
The process that results in the removal of orbital electrons from atoms resulting in the
formation of ion pairs is called:
a. excitation
b. radioactivity
c. decay
d. ionization - CORRECT ANSWER-d. ionization
The fact that gases bombarded by ionizing radiation become conductors of electrical
current make them useful in:
a. X-ray transformers
b. cathode tubes
c. detection equipment
Radiography Radiation Safety
The acronym rem stands for:
a. radiation equivalent man
b. radiation effect man
c. roentgen effect man
d. roentgen equivalent man - CORRECT ANSWER-d. roentgen equivalent man
The initialism QF stands for:
a. quantity factor
b. quality frequency
c. quality factor
d. quality effective factor - CORRECT ANSWER-c. quality factor
The quality factor for X-rays and gamma rays is:
a. 1
b. 2
c. 10
d. 20 - CORRECT ANSWER-a. 1
The quality factor for alpha (ray) particles is:
a. 1
b. 2
c. 10
d. 20 - CORRECT ANSWER-d. 20
Activity of radioactive material is measured in:
a. curies
b. roentgens
c. sieverts
d. grays - CORRECT ANSWER-a. curies
Becquerels and curies are units of measurement of:
a. physical size of the source
b. gray per hour
,c. decay rate
d. roentgen per hour - CORRECT ANSWER-c. decay rate
Atoms that have excess energy and are unstable are known as:
a. radioactive
b. radioactivity
c. balanced
d. weighted - CORRECT ANSWER-a. radioactive
Elementary particles units with a negative electrical charge and a mass approximately
equal to 1/1840 that of a proton are:
a. electrons
b. protons
c. neutrons
d. valence shells - CORRECT ANSWER-a. electrons
Positively charged elementary particles with a mass approximately equal to 1840 times
that of an electron, or 1 AMU, are known as:
a. electrons
b. protons
c. neutrons
d. valence shells - CORRECT ANSWER-b. protons
Uncharged elementary particles with a mass nearly equal to that of a proton are called:
a. electrons
b. protons
c. neutrons
d. valence shells - CORRECT ANSWER-c. neutrons
The area known as the center of an atom is called the:
a. electron
b. nucleus
c. proton
d. neutron - CORRECT ANSWER-b. nucleus
Any byproduct material that is encased in a capsule designed to prevent leakage or
escape of the byproduct material is a:
a. drum
b. pig
c. sealed source
,d. container - CORRECT ANSWER-c. sealed source
A tube through which the radioactive source travels when inside a radiographic
exposure device is a/an:
a. port tube
b. guide tube
c. S tube
d. exit tube - CORRECT ANSWER-c. S tube
The Symbol R means:
a. rem
b. rad
c. roentgen
d. radiation - CORRECT ANSWER-c. roentgen
The acronym rad means:
a. radiation absorbed dose
b. roentgen absorbed dose
c. roentgen acquired dose
d. radiation at death - CORRECT ANSWER-a. radiation absorbed dose
The roentgen (R) exposure is measured in:
a. tissue
b. water
c. a lab
d. air - CORRECT ANSWER-d. air
The symbol mR means:
a. milliroentgen
b. microroentgen
c. megaroentgen
d. millirem - CORRECT ANSWER-a. milliroentgen
One roentgen or 1 R is equal to:
a. 100 milliroentgen
b. 1000 milliroentgen
c. 0.001 milliroentgen
d. 1 milliroentgen - CORRECT ANSWER-b. 1000 milliroentgen
, Survey meters must be calibrated at intervals not to exceed:
a. three months and/or after instrument servicing except for battery changes
b. six months and/or after instrument servicing except for battery changes
c. annually and after instrument servicing except for battery changes
d. daily and after instrument servicing except for battery changes - CORRECT
ANSWER-b. six months and/or after instrument servicing except for battery changes
A survey meter must be capable of measuring a range of:
a. 0 to 1000 mR/h (0 to 10 mSv/h)
b. 2 to 1000 R/h (0.02 to 10 Sv/h)
c. 0 to 1000 R/h (0 to 10 Sv/h)
d. 2 to 1000 mR/h (0.02 to 10 mSv/h) - CORRECT ANSWER-d. 2 to 1000 mR/h (0.02 to
10 mSv/h)
Becquerels and curies are units of measurement of:
a. physical size of the source
b. activity
c. gray per hour
d. roentgen per hour - CORRECT ANSWER-b. activity
An analog survey meter must be calibrated on each scale at two points approximately:
a. 33% and 66% of the scale's potential
b. 25% and 75% of the scale's potential
c. through the full range of the scale's potential
d. at the midpoint of the scale's potential - CORRECT ANSWER-a. 33% and 66% of the
scale's potential
The process that results in the removal of orbital electrons from atoms resulting in the
formation of ion pairs is called:
a. excitation
b. radioactivity
c. decay
d. ionization - CORRECT ANSWER-d. ionization
The fact that gases bombarded by ionizing radiation become conductors of electrical
current make them useful in:
a. X-ray transformers
b. cathode tubes
c. detection equipment
