Top 1000+ Solved Non Destructive Testing and Evaluation MCQ Questions Answer
Q. A filter will reduce the amount of in the primary radiation beam:
a. Scatter
b. Electrons
c. High energy radiation
d. Low energy radiation
Q. A filter is placed:
a. Between the source and the specimen
b. Between the specimen and the film
c. Around the specimen
d. Behind the film
Q. The tube current in milliamps multiplied by the time in seconds or minutes equals:
a. Density
b. Intensity
c. Exposure
d. Kilovoltage
Q. If we were to maintain the same exposure but decrease the source to film distance, we must the time of exposure:
a. Increase
b. Decrease
c. none
d. none
Q. Use of a slower speed film improves the definition of the radiograph because theslower film:
a. Requires more exposure
b. Is more sensitive to X rays
c. Requires less voltage
d. Has finer grains
Q. The penetrameter is a tool used to check the of a radiograph:
a. Contrast
b. Definition
c. Sensitivity
d. Emulsion
Q. When using a radioactive isotope in making a radiograph, we can express the equationfor exposure as Ci × T. In this equation , Ci stands for:
a. Current through tube
b. Intensity in curies or becquerels
c. Degree of contrast
d. Coarseness of the film
Q. In the radiographic analysis procedure that is used to prepare an exposure chart, thefirst step is to:
a. Make a series of radiographs of a step wedge
b. Radiograph several objects of known thickness
c. Convert the densities read from the radiographs to a standard density
d. Plot the exposures on a graph
Q. Which exposure factors are recorded in the process of making a step wedge analysis?
a. Voltage and exposure
b. Source-to-film distance and film
c. Film density and materials
d. All of the above
Q. After the step wedge radiographs have been made, the of the image ofeach step is recorded on chart:
a. Sharpness
b. Contrast
c. Density
d. Length
Q. The process of loading more than one film into a cassette is known as thetechnique:
a. Single film technique
b. Multiple film technique
c. none
d. none
Q. Which of the following isotopes are commonly used for radiographic purposes?
a. Iridium-192
b. Osmium-188
c. Cobalt-87
d. Rubidium
Q. The process of being radioactive is called (Choose one):
a. Heating
b. Decaying
c. Bremsstrahlung
d. Rectification
Q. Which of the following types of radiation is commonly used in radiographic testing?(Choose one):
a. Alpha particles
b. Neutrons
c. gamma rays
d. Beta rays