An advantage of a dual crystal search unit is that:

Related MCQs

• AA material used between the face of a search unit and the test surface to permit or improve the transmission of ultrasonic vibrations from the search unit to the material being tested is called:
• A reason for using a dual element search unit is:
• Which of the following search units would contain the thinnest quartz crystal?
• An advantage of using lithium sulphate in search units it that:
• An advantage of using a ceramic transducer in search units is that:
• The piezoelectric material in a search unit which vibrates to produce ultrasonic waves 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:
• In immersion testing, the position of the search unit is often varied to transmit sound into the test part at various angles to the front surface. Such a procedure is referred to as:
• A disadvantage of using natural quartz crystals in a search unit is that:
• A 25 MHz search unit would most likely be used during: