ASNT Study Guide - Industrial Radiography Radiation Safety Questions With Verified Solutions All Correct

ASNT Study Guide - Industrial Radiography Radiation Safety Questions With Verified Solutions All Correct 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