ASNT Study Guide - Industrial Radiography
Radiation Safety Detailed Questions And Expert
Answers 2024
The Symbol R means:
a. rem
b. rad
c. roentgen
d. radiation - ANS c. roentgen
The acronym rad means:
a. radiation absorbed dose
b. roentgen absorbed dose
c. roentgen acquired dose
d. radiation at death - ANS a. radiation absorbed dose
The roentgen (R) exposure is measured in:
a. tissue
b. water
c. a lab
d. air - ANS d. air
The symbol mR means:
a. milliroentgen
b. microroentgen
c. megaroentgen
, d. millirem - ANS a. milliroentgen
One roentgen or 1 R is equal to:
a. 100 milliroentgen
b. 1000 milliroentgen
c. 0.001 milliroentgen
d. 1 milliroentgen - ANS b. 1000 milliroentgen
The acronym rem stands for:
a. radiation equivalent man
b. radiation effect man
c. roentgen effect man
d. roentgen equivalent man - ANS d. roentgen equivalent man
The initialism QF stands for:
a. quantity factor
b. quality frequency
c. quality factor
d. quality effective factor - ANS c. quality factor
The quality factor for X-rays and gamma rays is:
a. 1
b. 2
c. 10
d. 20 - ANS a. 1
The quality factor for alpha (ray) particles is:
, a. 1
b. 2
c. 10
d. 20 - ANS d. 20
Activity of radioactive material is measured in:
a. curies
b. roentgens
c. sieverts
d. grays - ANS 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 - ANS c. decay rate
Atoms that have excess energy and are unstable are known as:
a. radioactive
b. radioactivity
c. balanced
d. weighted - ANS 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 - ANS 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 - ANS 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 - ANS c. neutrons
The area known as the center of an atom is called the:
a. electron
b. nucleus
c. proton
d. neutron - ANS 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 - ANS c. sealed source
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