Compared to the echo returned from a smooth reflector, the echo returned from a natural flaw of the same area and orientation is:

Related MCQs

• An increase in gain of how many decibels corresponds to a 5:1 increase in flaw echo amplitude?
• When testing a test piece with parallel front and back surfaces, no back wall echo can be obtained. Which of the following actions might enable you to obtain a back wall echo?
• Which of the following is false concerning a magnetic field in and around a hollow conductor as compared to that of a solid conductor of the same outside diameter when both are of the same magnetic material, and when the applied current is the same?
• A casting flaw which is formed when two masses of molten metal flowing from different directions flow together, but fail to fuse, is called:
• Flaw sizing by the 6 dB drop technique is applicable to:
• AA display which shows the initial pulse and the front surface echo superimposed would be considered:
• AA display which shows the initial pulse and the front surface echo with a fairly wide space between the two would be considered:
• An ultrasonic display which shows echo locations and amplitude is called:
• Dark rounded indications with rather smooth edges appear on the radiograph of casting made in sand mould. These indications would be interpreted as:
• A smooth flat discontinuity whose major plane is not perpendicular to the direction of sound propagation may be indicated by: