Question 1
A radionuclide has a half-life of 8 hours. What fraction of the original activity remains after 24 hours?
Correct Answer:
12.5%
Question 2
For a roughly 1 MeV gamma ray passing through water or tissue, which interaction mechanism is usually dominant?
Correct Answer:
Compton scattering
Question 3
A shield adds two half-value layers for a narrow-beam gamma source. Assuming ideal exponential attenuation, what fraction of the original intensity remains?
Correct Answer:
25%
Question 4
Which detector is most appropriate when high-resolution gamma-ray spectroscopy is required?
Correct Answer:
High-purity germanium detector
Question 5
A worker receives an absorbed dose of 0.20 Gy from alpha radiation. If the radiation weighting factor is 20, what equivalent dose results?
Correct Answer:
4.0 Sv
Question 1
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About this Exam

Prepare with the PE Nuclear Practice Questions - PE Nuclear Engineering Exam practice quiz. This question bank includes 100 questions covering reactor, dose, water, source, and radiation. Use it to review important concepts, identify knowledge gaps, and build confidence for the related exam, course, or assessment.

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PE Nuclear Practice Questions - PE Nuclear Engineering Exam

This practice set contains 100 questions from the matching question bank and focuses on reactor, dose, water, source, and radiation. 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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