In a basic pulse-echo ultrasonic instrument, the component that produces the time base line is called a:

Related MCQs

• An ultrasonic instrument control which is used to expand or contract the horizontal base line of an A scan display is called:
• An instrument display in which the horizontal base line represents elapsed time and the vertical deflection represents signal amplitudes is called:
• 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:
• The cable that connects the ultrasonic instrument to the search unit is specially designed so that one conductor is centred inside another. The technical name for such a cable is:
• Which of the following circuits provide current to operate the ultrasonic instrument?
• 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:
• The angle formed by an ultrasonic wave as it enters a medium of different velocity than the one from which it came and a line drawn perpendicular to the interface between the two media is called:
• In a basic ultrasonic test pattern (A scan) for contact testing, the initial pulse (assume no sweep delay is used):
• An oscilloscope display in which the screen base line is adjusted to represent the one way distance in a test piece is called a:
• The piezoelectric material in a search unit which vibrates to produce ultrasonic waves is called: