The echo on the cathode ray tube (CRT) which represents the far boundary of the material being tested is called:

Related MCQs

• The coated inside surface of the large end of a cathode ray tube which becomes luminous when struck by an electron beam is called:
• 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:
• 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?
• Compared to the echo returned from a smooth reflector, the echo returned from a natural flaw of the same area and orientation is:
• Ultrasonic testing of material where the search unit is in direct contact with the material being tested may be:
• The primary effect of an increase in the milliamperage at which a X ray tube is being operated would be to:
• The primary effect of an increase in the kilovoltage at which a X ray tube is being operated would be to:
• AA test method employing two seperate search units on opposite surfaces of the material being tested is called:
• Which of the following is an advantage of X ray over gamma ray sources for radiography?
• Which of the following is an advantage of X ray over gamma ray sources for radiography?