Irrsp Xray Ndt/nde Test 2024-2025/actual Complete Exam Questions And Correct Answers (Veried Answers ) A Graded.

IRRSP XRAY NDT/NDE TEST 2024-2025/ACTUAL COMPLETE EXAM QUESTIONS AND CORRECT ANSWERS (VERIED ANSWERS ) A GRADED. Specific emission Constant for Co60 is? - ANSWER-14R/Hr/ci @ 1ft Specific emission Constant for Ir192 is? - ANSWER-5.2 R/Hr/ci @ 1ft What is the Half Life for Ir192? - ANSWER-74 days What is the Half life for co60 ? - ANSWER-5.3 years In the beginning of Radiography, Wilhelm Conrad Rontgen scientist won the Nobel prize and how did he get to do this ? - ANSWER- in 1896 while investigating phosphorescence in uranium salts, he accidentally discovered radioactivity . as he was investigating the work of Mr rontgen , Becquerel wrapped a fluorescent substance , potassium - ANSWER-Henri Becquerel 1852-1908 gamma radiography got its start in the united states in 1929 at a naval research laboratory. the navy wanted a method to inspect think steel casting , but x ray available at the time were limited to 3 in" using radium it was possible to inspaect thhinknesse in the range of 10" in to12" in these radiographs were achieved by a method called fishpoling - ANSWER-Early Gamma Radiographyfishpoling required a radiographer to hold a weak radium source to a long rod for the time