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Question 1
In phased array ultrasonic testing, what is a focal law?
Correct Answer:
The set of time delays applied to each element in the aperture to form, steer, and focus the beam
Question 2
Which physical principle explains how the individual element wavefronts combine to form a coherent phased array beam?
Correct Answer:
Huygens principle of wavelet superposition
Question 3
What is the near-field length of a 5 MHz, 16-element linear array where the active aperture is 16 mm long and the material velocity in steel is 5900 m/s?
Correct Answer:
About 54 mm
Question 4
What happens to PAUT beam focusing capability beyond the natural near-field length of the active aperture?
Correct Answer:
Focusing is not possible — the beam naturally diverges
Question 5
What is the element pitch of a linear phased array probe?
Correct Answer:
The center-to-center distance between adjacent elements
Question 1
Exam overview

About this Exam

Prepare with the API QUPA Practice Questions - API QUPA Qualified Ultrasonic Phased Array Examiner Exam practice quiz. This question bank includes 100 questions covering paut, asme, array, scan, and weld. Use it to review important concepts, identify knowledge gaps, and build confidence for the related exam, course, or assessment.

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API QUPA Practice Questions - API QUPA Qualified Ultrasonic Phased Array Examiner Exam

This practice set contains 100 questions from the matching question bank and focuses on paut, asme, array, scan, and weld. Work through each question carefully, review the provided solutions, and revisit topics that need more study before your next attempt.

This is an independent study resource intended for practice and review; it is not an official examination or an endorsement by any organization named in the title.

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