Shielding - Study guides, Class notes & Summaries

CWB Welding Inspector Level III Study Guide 2024/2025 With Complete Solutions. Which of the following metals has the highest thermal conductivity? (a) carbon steel (b) stainless steel (c) aluminum - Correct Answer-(c) The Ellingham diagram (a) is a plot of thermal conductivity against temperature, (b) shows the free energy of oxide formation against temperature. (c) shows the rate of oxidation of metals against temperature. - Correct Answer-(b) True or False? A metal with a high negati...

Test Bank For Radiation Protection in Medical Radiography 9th Edition by Sherer | Chapter 1-14 | Complete 2023. Chapter 01: Introduction to Radiation Protection Sherer: Radiation Protection in Medical Radiography, 9th Edition MULTIPLE CHOICE 1. Consequences of ionization in human cells include 1. creation of unstable atoms. 2. production of free electrons. 3. creation of highly reactive free radicals capable of producing substances poisonous to the cell. 4. creation of new biologic mole...

Introduction To Shielded Metal Arc Welding (SMAW) – Q&A

Which of the following changes in (KVP) will result in the greatest reduction of patient dose, when (MAS) is adjusted to compensate for the change? correct answer: Increase kVp by 30% Which of the following (IR) system speeds will result in the lowest patient dose? correct answer: Faster speed IR system What is the primary purpose of using gonad shields during radiography? correct answer: Reduce the likelihood of genetic effects Contact & shadow are two types of gonad shield correct ...

ENG1517 JAN/FEB Supplementary exam 2024 Answers SECTION A ALL the answers in this section MUST be presented in the form of (a) cohesive paragraph/s and not in point form. After you have read TEXT A, please answer Questions 1.1 to 1.3. Hairy Maclary from Donaldson’s Dairy is a cumulative tale. The full text of the story has been copied below and an example of one of the pictures has been provided. Most of the paragraphs of text appear alone on a page next to an illustration, as in...

Which of the following statements are correct regarding the link between radiation dose and genetic effects? 1. The link has been demonstrated in human studies. 2. The link has been demonstrated in animal studies. 3. increased risk to humans cannot be predicted with respect to an individual. correct answer: 2 and 3 only Which of the following changes in kilovoltage (KVP) will result in the greatest reduction of patient dose, when milliamperage-seconds (mAs) is adjusted to compensate for t...

13. Genetic effects from exposure to ionizing RAdiation occur as a result of RAdiation- induced damage to the DNA molecule in which of the FOllowing? 1. Sperm of a man 2. Ova of a woman 3. Somatic cells of men and women a. 1 only b. 2 only c. 3 only d. 1 and 2 only ANS: D 14. What do agents such as specific chemicals, viruses, and ionizing RAdiation have in common? a. Nothing b. They can increase the frequency of mutations in only those members of the population who are already geneti...

A transformer type stick welding only has *AC* current. CORRECT ANSWER A transformer type stick welding only has *(AC or DC)* current. FALSE - A stick welder with a rectifier produces AC current only. CORRECT ANSWER A stick welder with a rectifier produces AC current only. TRUE or FALSE TRUE - Lack of overlap will cause slag to be trapped. CORRECT ANSWER Lack of overlap will cause slag to be trapped. TRUE or FALSE *6010* electrode is more sensitive to arc length CORRECT ANSWER What elec...

"Shielded" in SMAW CORRECT ANSWER-gas cloud protects molten metal from air Electrons CORRECT ANSWER-Electricity is a movement of these through a circuit What SMAW be used to weld CORRECT ANSWER-carbon steel, stainless steel, cast iron, hard surfacing Weld quality for SMAW is as good as other processes CORRECT ANSWER-YES Can SMAW be used outdoors because the shielding isn't often effected by drafts CORRECT ANSWER-YES SMAW is an old technique and not usually used in industry CORR...