AA screen pattern containing a large number of low-level indications (often reffered to as ‘hash’) could be caused by:

Related MCQs

• Fluorescent penetrant indications are more visible than colour contrast penetrant indications because:
• A group of indications, some sharp and some broad and fuzzy, were found on an area of a small forging. Demagnetization and re-inspection eliminated these indications. What was the probable cause?
• Dark rounded indications with rather smooth edges appear on the radiograph of casting made in sand mould. These indications would be interpreted as:
• In an A scan presentation, the amplitude of vertical indications on the screen represents the:
• Indications which are caused by design or construction of the test piece are called?
• Indications which are caused by something other than a discontinuity are called:
• Dark crescent-shaped indications on a radiographic film are most likely caused by:
• Spurious indications might be caused by which of the following?
• Spurious indications may be caused by which of the following?
• The causes of non relevant indications are: