Top 1000+ Solved Non Destructive Testing and Evaluation MCQ Questions Answer
Q. The amount of X radiation or gamma radiation is often spoken of as theof the radiation:
a. Wavelength
b. Energy
c. Intensity
d. Frequency
Q. The speed at which X and gamma rays travel is: (choose one)
a. The speed of light
b. The speed of sound
c. It varies with the wavelength
d. Depends on the source
Q. A beam of radiation consisting of a single wavelength is known as: (choose one)
a. Microscopic radiation
b. Monochromatic radiation
c. Heterogeneous radiation
d. Fluoroscopic radiation
Q. What governs the penetrating ability of an X ray beam?
a. Kilovoltage
b. Time
c. Activity
d. Milliamperage
Q. The shorter the wavelength of X or gamma rays:
a. The higher their energy
b. The faster they travel
c. The greater their intensity
d. The closer they are to becoming radio waves
Q. ‘Photoelectric effect’ refers to:
a. An electric camera
b. Complete absorption of a photon
c. The visible electromagnetic spectrum
d. Scatter of neutrons
Q. When a tissue cell in human body is damaged by radiation:
a. The cell may lose its ability to reproduce
b. The cell may die
c. Damage is caused by knocking an electron out of the orbit of its parent atom.
d. All of the above
Q. Lead intensifying screens are used to:
a. Decrease exposure time
b. Increase grain size
c. Shield film from stray light
d. All of the above
Q. Radiographic film speed can be increased by using:
a. A higher mA setting
b. A lower mA setting
c. A double emulsion versus a single emulsion film
d. Lead screens versus fluorescent screens
Q. A radiation producing device which emits a broad spectrum of wavelengths is:
a. A gamma ray source
b. An X ray machine
c. A Geiger Mueller tube
d. A curie tube
Q. The primary effect of an increase in the milliamperage at which a X ray tube is beingoperated would be to:
a. Increase the radiation intensity
b. Increase penetrating power
c. Increase primary beam wavelengths
d. All of the above
Q. The primary effect of an increase in the kilovoltage at which a X ray tube is beingoperated would be to:
a. Increase the radiation intensity
b. Increase penetrating power
c. Increase penetrating power and radiation intensity
d. Increase primary beam wavelength
Q. Which of the following types of intensifying screens are used in industrial radiography?
a. Lead
b. Fluorescent
c. Lead oxide
d. All of the above
Q. A change in which of the following parameters would necessitate the construction of anew X ray exposure chart?
a. X ray machine used
b. Film type
c. Focal spot to film distance
d. Any of the above
Q. The ASTM penetrameter for a 25 mm thick test piece contains holes of what sizes?
a. T, 2T, 3T
b. 2T, 3T, 4T
c. T, 2T, 4T
d. T, 3T, 4T