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Questions and Answers
What is the typical range for the height of lead strips in a grid?
What is the typical range for the height of lead strips in a grid?
- 8 mm to 10 mm
- 5 mm to 8 mm
- 1 mm to 2 mm
- 2 mm to 5 mm (correct)
What is the grid ratio defined as?
What is the grid ratio defined as?
- The ratio of the height to the width of the spacer (correct)
- The ratio of the lead strip thickness to the interspace width
- The ratio of grid frequency to grid lines
- The ratio of grid height to grid width
What is the range for grid frequency in low frequency grids?
What is the range for grid frequency in low frequency grids?
- 30-40 lines/cm (75-100 lines/inch)
- 60-70 lines/cm (150-175 lines/inch)
- 50-60 lines/cm (120-150 lines/inch)
- 40-50 lines/cm (100-120 lines/inch) (correct)
What is a consequence of using grids with higher ratios?
What is a consequence of using grids with higher ratios?
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What does the ability of the grid to discriminate against scattered radiation depend on?
What does the ability of the grid to discriminate against scattered radiation depend on?
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