NDT Ultrasonic Test Questions

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Ultrasonic Practice Test

1) Which definition describes a shear wave?
a) wave in which the particle motion is in the same direction as propagated wave.
b) wave in which particles vibrate in a direction perpendicular to the direction of propagation.
c) an ultrasonic vibration that has the ability to propagate at a specific angles dependent on the product of the test frequency and object thickness.
d) Waves that travel on the surface or near surface of a test object

2) What is another name for a calibration standard?

a) Calibration Block
b) Calibration Form
c) Standardized Reflector
d) Ultrasonic Sample


3) What does the gain control do on the ultrasonic testing equipment?
a) Eliminate unwanted, low level A-scan signals
b) Allow technician to set the visible A-scan screen range
c) Assists in controlling pulse energy transmitted into a test object
d) Controls the amplifier circuit

4) What relates to the ability of transducer to differentiate between two or more reflectors that are closely spaced in a lateral plan perpendicular to the axis of a sound beam propagation?
a) Sensitivity
b) Damping
c) Spatial resolution
d) Delayed sweeping

5) True Or False? A transducer's frequency is determined by the thickness of the crystal.
a) True
c) False

6) True Or False? If a crystal produces a higher frequency sound beam it produces a higher sensitivity, resolution and depth of penetration.

a) True
b) False


7)A planar discontinuity like a surface connecting crack or lack of fusion are best detected by using what?
a) Conventional longitudinal wave transducer
b) Shear wave transducer
c) Paintbrush transducer
d) both "a" and "c"

8) What is the best transducer to use when first scanning a large object?
a) Shear wave transducer
b) Focused transducer
c) Paintbrush transducer
d) None of the above

9) What is used between the transducer face and test object to ensure efficient sound transmissions?
a) Couplants
b) Beam Spread
c) Amplifier
d) Mode conversion

10) What should you use to ensure a part has been demagnetized?
a) Field Indicator
b) Prods
c) Multi meter
d) Gauss meter

Test Taking Tip

What to do if more than one answer seems correct?

Does the answer completely address the entire question. If it seems partly true but you hesitate on any portion of the answer then it is probably not the correct choice. Many test writers give an "almost true" answer to stump test takers.
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