Non Destructive Testing and Evaluation MCQs | Page - 98

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M

Mr. Dubey • 52.26K Points
Coach

Q. Generally, X ray output is changed by changing the:

(A) Atomic number of the anode
(B) Tube current of the unit
(C) Supply voltage to the unit
(D) Atomic weight of the cathode
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M

Mr. Dubey • 52.26K Points
Coach

Q. Deep scratches on lead intensifying screens will cause?

(A) Selective image enhancement
(B) Irregular light lines on the film
(C) Dark lines on the film
(D) Unacceptable blockage of the primary radiation beam
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M

Mr. Dubey • 52.26K Points
Coach

Q. Which of the following is classified as electromagnetic radiation?

(A) Visible light
(B) X rays
(C) Infrared radiation
(D) All of the above
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M

Mr. Dubey • 52.26K Points
Coach

Q. The main disadvantage of having a small focal spot on an X ray tube is:

(A) Heat is conducted away too fast
(B) Sharper radiographic images may be achieved with a larger focal spot
(C) A smaller focal spot is limited to lower tube currents because of the potential damage from overheating
(D) None of the above
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M

Mr. Dubey • 52.26K Points
Coach

Q. Exposure of whole body to moderate radiation doses of 500 – 2000 mSv (50 to 200 rem) would probably cause which of the following effects?

(A) Blood cell changes
(B) Swelling
(C) Possible nausea
(D) All of the above
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M

Mr. Dubey • 52.26K Points
Coach

Q. A reaction which occurs when a radiation beam of 90 keV is totally absorbed by a test piece would probably be:

(A) The Compton effect
(B) The photoelectric effect
(C) Pair production
(D) Any of the above
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M

Mr. Dubey • 52.26K Points
Coach

Q. The term used to describe the reaction of human reproductive cells, to ionizing radiation is:

(A) Genetic effects
(B) Somatic effects
(C) Corpuscular effects
(D) Hematological effects
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M

Mr. Dubey • 52.26K Points
Coach

Q. How is the wavelength of scattered radiation related to the primary beam?

(A) Longer
(B) Shorter
(C) Same
(D) Not related
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M

Mr. Dubey • 52.26K Points
Coach

Q. Higher X ray tube voltages result in:

(A) Shorter wavelengths X rays
(B) More penetrating X rays
(C) Higher intensity X ray beam
(D) All of the above
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M

Mr. Dubey • 52.26K Points
Coach

Q. Betatrons are used to produce X rays having energy in the range of:

(A) Several MeV
(B) 50-500 keV
(C) 500-1000keV
(D) 0-50 keV
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