Calclation Questions Flashcards
1
Q
A 2mm thick copper filter is to be used in conjunction with 220Kv X-Ray’s for radiography of a 15mm thick butt weld in steel plate. If the equivalence factor for steel is 1.0 while that for copper is 1.4 , what ( approximate ) thickness of steel should be used when obtaining an exposure from a chart constructed for unfiltered X-Ray’s?
A-16mm
B-18mm
C-19mm
D-17mm
A
B- 18mm
2 X 1.4 + 15
