Top 1000+ Solved Non Destructive Testing and Evaluation MCQ Questions Answer
Q. Which of the following is an isotope not artificially produced for industrial use:
a. Ir-192
b. Ra-226
c. Co-60
d. All of the above
Q. The film processing step in which the undeveloped silver bromide is removed fromthe film emulsion is called:
a. Development
b. Stop bath
c. Fixing
d. Rinsing
Q. A radiation producing device which emits radiation of one or a few discreetwavelengths is:
a. An X ray machine
b. A linear accelerator
c. A gamma ray source
d. A betatron
Q. The intensifying action of lead screens is caused by:
a. Secondary X ray emission
b. Secondary gamma ray emissions
c. Fluorescence of lead screens
d. Electron emission
Q. Most of the energy applied to an X ray tube is converted into:
a. X rays
b. Light
c. Heat
d. Ultraviolet radiation
Q. Radiography of tubular sections using a double wall, double viewing technique ismainly applicable to sections:
a. Over 38 mm in diameter
b. 88 mm in diameter or less
c. 125 mm in diameter and less
d. Under 25 mm in diameter
Q. Which of the following is the most common method of packaging film?
a. Individual sheets for use in cassettes
b. Rolls
c. Pre-packaged (‘day-pack’)
d. All of the above
Q. Which of the following types of radiation is particulate?
a. X
b. Gamma
c. Alpha
d. None of the above
Q. Most scattered radiation which adversely affects the radiographic image qualityoriginates:
a. From floors and walls adjacent to the test piece
b. From other nearby objects
c. From the test piece itself
d. From the lead intensifying screens
Q. An effect of scattered radiation is to:
a. Decrease required exposure time
b. Diminish contrast, detail and clarity of radiographic image
c. Decrease film density
d. All of the above
Q. What is the most important factor in determining the archival quality of radiographicfilm?
a. Film density
b. Image quality
c. Degree of removal of fixer residues during washing
d. Degree of removal of developer residues during washing
Q. Radiographic enlargement to distinguish small defects is possible:
a. Only with a very small source or focal spot size radiation source
b. Routinely
c. With most sources
d. Never
Q. A detrimental effect of fluorescent screens might be:
a. High definition
b. Screen mottle
c. Non-linear attenuation
d. Displaced core effect