Free ASNT Ultrasonic Questions and Answers

Question 1

The indication on the instrument display that represents the far boundary of the material being tested is called:

Accepted Answer

The back surface reflection

Answer

Explanation:
In nondestructive testing (NDT), particularly in methods like ultrasonic testing, the indication on the instrument display that represents the far boundary of the material being tested is referred to as "The back surface reflection." This indication occurs due to the reflection of sound waves from the far surface of the material being tested. It is crucial in determining the thickness or integrity of the material being inspected.

Question 2

In immersion testing, the position of the transducer is often varied to transmit sound into the test part at various angles to the front surface. Such a procedure is referred to as:

Accepted Answer

Angulation

Answer

Explanation:
In immersion testing, varying the position of the transducer to transmit sound into the test part at various angles to the front surface is referred to as "Angulation." This technique allows for the examination of different areas of the test part and enhances defect detection by optimizing the sound beam's interaction with the material.

Question 3

The cable that connects the ultrasonic instrument to the transducer is specially designed so that one conductor is centered inside another. The technical name for such a cable is:

Accepted Answer

Coaxial cable

Answer

Explanation:
The technical name for the cable that connects the ultrasonic instrument to the transducer, where one conductor is centered inside another, is "Coaxial cable." This design helps minimize interference and signal loss during the transmission of ultrasonic signals between the instrument and the transducer.

Question 4

The process of comparing an instrument or device with a standard is called:

Accepted Answer

Calibration

Answer

Explanation:
The process of comparing an instrument or device with a standard to determine its accuracy and adjust it if necessary is called "Calibration." Calibration ensures that the instrument or device provides accurate and reliable measurements or readings.

Question 5

Another name for a compressional wave is:

Accepted Answer

Longitudinal wave

Answer

Explanation:
Another name for a compressional wave is a "Longitudinal wave." In longitudinal waves, the particle motion is parallel to the direction of wave propagation, causing compression and rarefaction of the medium. This type of wave is commonly used in ultrasonic testing and other nondestructive testing methods.

ASNT - American Society for Nondestructive Testing, Inc. Practice Test

ASNT - American Society for Nondestructive Testing, Inc. Practice Test

Free ASNT Ultrasonic Questions and Answers