An ultrasonic instrument control which allows moving an A scan display to the left or right without changing the distance between any echoes displayed is called:

Related MCQs

• An ultrasonic instrument control which is used to expand or contract the horizontal base line of an A scan display is called:
• When comparing discontinuity echoes to equivalent flat bottom hole echoes in materials with similar impedance, surface finish and attenuation:
• During immersion ultrasonic testing of pipe or tubing, spurious echoes may be caused by:
• When a vertical indication has reached the maximum signal height which can be displayed or viewed on the CRT of an ultrasonic instrument, the indication is said to have reached its:
• An ultrasonic insrument control which is used to adjust the sharpness of the CRT screen display is called:
• An ultrasonic display which shows a cross section of the test piece and any flaws which are found are called:
• In a basic ultrasonic test pattern (A scan) for contact testing, the initial pulse (assume no sweep delay is used):
• The ability to detect echoes from small reflectors is called:
• The ability to separate echoes from reflectors close together in depth is called:
• An ultrasonic data display which shows a plan view presentation of the data is called: