ASNT RT LEVEL II Review
Typically, low-voltage X-ray tubes have home windows manufactured from: a. Plastic.
Beryllium, b. C. Glass.
D. Lead.
B. Beryllium.
The projected vicinity of the target of an X-ray tube is called the:
a. The focus. B. Attention c. An effective point of focus. D. Geometric fuzziness c. An
effective point of awareness. The widespread technique of manufacturing X-rays includes
the sudden deceleration of excessive-speed electrons in a strong body known as a:
a. The point of interest cup b. Filament.
C. Goal.
D. The cathode c. The aim f it were necessary to radiograph a 7 in. Which of the following
gamma-ray assets might most probable be applied for a metal product that is 177.8 mm
thick? A. Co-60
b. Tm-170
c. Ir-192
d. Cs-137
a. Co-60
A Co-60 gamma-ray supply has an approximate sensible thickness limit of:
a. 2.5 in. (sixty three.Five mm) of metallic or something comparable. B. 4 in. (one hundred
and one.6 mm) of metal or its equivalent.
C. 8 in. (203.2 mm) of steel or something comparable. D. 11 in. (279.Four mm) of steel or
its equivalent.
C. Eight in. (203.2 mm) of steel or its equal.
The absorption of gamma rays from a given source while passing via rely relies upon on:
a. The atomic wide variety, density, and thickness of the problem.
B. Young's modulus price of the matter.
C. Poisson's ratio value of the matter.
D. The precise hobby value of the supply.
A. The atomic number, density, and thickness of the problem.
The reality that gases, when bombarded via radiation, ionize and grow to be electrically
conductive makes them useful in:
a. X-ray transformers.
B. X-ray tubes.
C. Masks.
D. Radiation detection gadget.
D. System for detecting radiation. The pace of electrons placing the target in an X-ray tube
is a feature of the:
a. Atomic variety of the cathode material.
B. The material for the filament's atomic quantity. C. Voltage distinction among the cathode
and anode.
D. Modern-day waft within the rectifier circuit.
C. Voltage difference among the cathode and anode.
, The choppy distribution of evolved grains inside the emulsion of a processed X-ray film
reasons the subjective impression of:
a. Graininess.
B. Streaks.
C. Spots.
D. White scum.
A. Graininess.
Co-60 is said to have a 1/2-lifestyles of 5.3 years. By how much have to exposure time be
increased (over that used first of all to supply awesome radiographs while the Co-60 source
became new) when the supply is 2 years old?
A. No alternate in publicity time is needed.
B. The publicity time should be approximately eleven% longer. C. Exposure time should be
about 37% longer.
D. Exposure time have to be approximately sixty two% to 100% longer.
C. Exposure time ought to be approximately 37% longer.
A supply of Ir-192, whose half of-existence is seventy five days, offers an surest publicity of
a given check object nowadays in a duration of 20 min. Five months from now, what
publicity time could be required for the same radiographic density, below comparable
exposure conditions?
A. 10 min
b. 20 min
c. 1 h and 20 min
d. 6 h
c. 1 h and 20 min
Of the subsequent, the supply providing the maximum penetrating radiation is:
a. Co-60.
B. 220 kVp X-ray tube.
C. 15 MeV X-ray betatron.
D electrons from Ir-192.
C. X-ray betatron with 15 MeV. The gamma ray depth at 1 toes (three hundred mm) from a
1 Ci (37 GBq) source of radioactive Co-60 is nearest to:
a. 150 mSv in keeping with hour or 15 R in line with hour b. 1000 R in line with hour (10
000 mSv per hour).
C. 1 R according to min (10 mSv in step with min).
D. 10 mR in line with day (100 μSv in keeping with day).
A. 15 R in keeping with hour (150 mSv consistent with hour).
An X-ray tube's focal factor is as follows: a. Is inclined at an attitude of 30° from ordinary to
the tube axis.
B. Is maintained at a high terrible voltage at some point of operations.
C. Should be as massive as feasible to ensure a slender beam of number one radiation.
D. Ought to be as small as viable with out significantly lowering the tube's lifespan. D. Must
be as small as viable without unduly shortening the life of the tube.
The filament and the focusing cup are the two crucial additives of an X-ray tube: a. The
anode b. Cathode.
Rectifier, c. D. X-ray transformer
b. Cathode.
The amount of radiation on the way to produce, by means of ionization, 1 electrostatic unit
of electricity in 0.001293 g of dry air is called a:
, a. Millicurie.
B. The gamma c. Roentgen.
D. Curie.
Roentgen, C. Typically, an isotopic source's particular pastime is measured in: a. Million
electronvolts (MeV).
B. Curies in keeping with gram (Ci/g) [becquerel per gram (Bq/g)].
C. Roentgen consistent with hour (R/h) [coulomb per kilogram (C/kg)].
D. Counts according to minute (cpm).
B. Curies in keeping with gram (Ci/g) [becquerel per gram (Bq/g)].
Which of the subsequent isotopes has the longest half-existence?
A. Tm-one hundred seventy
b. Co-60
c. Ir-192
d. Cs-137
d. Cs-137
The number one form of strength conversion while electrons strike a target in an X-ray tube
consequences within the manufacturing of:
a. Number one X-rays.
B. Secondary X-rays.
C. X-rays with a short wavelength. D. Warmth
d. Warmth
On a film's characteristic curve, the slope of a directly line connecting points of various
densities is known as the: a. Pace of the curve.
B. Latitude.
C. Average gradient.
D. Density.
C. Common gradient.
An X-ray film having huge latitude also has:
a faulty definition b. Low comparison.
C. Speedy speed d. High common gradient
b. Low assessment.
The reason for circulating oil in some forms of X-ray tubes is to:
a. Lubricate transferring parts.
B. Take in secondary radiation.
C. Decrease the need for high contemporary.
D. Expend warmness.
D. Permit warmness depart. An X-ray tube with a small focal spot is considered higher than
one with a big focal spot while it's far desired to reap:
a. Greater capability of penetration b. Better definition.
C. Less comparison.
D. Greater movie density.
B. Higher definition.
One method of lowering radiographic contrast is to:
a. Increase the gap among the radiation source and the object.
B. Lower the gap between the object and the film.
C. Lower the wavelength of the radiation used.
D. Growth improvement time within producer's hints.
C. Decrease the wavelength of the radiation used.
Typically, low-voltage X-ray tubes have home windows manufactured from: a. Plastic.
Beryllium, b. C. Glass.
D. Lead.
B. Beryllium.
The projected vicinity of the target of an X-ray tube is called the:
a. The focus. B. Attention c. An effective point of focus. D. Geometric fuzziness c. An
effective point of awareness. The widespread technique of manufacturing X-rays includes
the sudden deceleration of excessive-speed electrons in a strong body known as a:
a. The point of interest cup b. Filament.
C. Goal.
D. The cathode c. The aim f it were necessary to radiograph a 7 in. Which of the following
gamma-ray assets might most probable be applied for a metal product that is 177.8 mm
thick? A. Co-60
b. Tm-170
c. Ir-192
d. Cs-137
a. Co-60
A Co-60 gamma-ray supply has an approximate sensible thickness limit of:
a. 2.5 in. (sixty three.Five mm) of metallic or something comparable. B. 4 in. (one hundred
and one.6 mm) of metal or its equivalent.
C. 8 in. (203.2 mm) of steel or something comparable. D. 11 in. (279.Four mm) of steel or
its equivalent.
C. Eight in. (203.2 mm) of steel or its equal.
The absorption of gamma rays from a given source while passing via rely relies upon on:
a. The atomic wide variety, density, and thickness of the problem.
B. Young's modulus price of the matter.
C. Poisson's ratio value of the matter.
D. The precise hobby value of the supply.
A. The atomic number, density, and thickness of the problem.
The reality that gases, when bombarded via radiation, ionize and grow to be electrically
conductive makes them useful in:
a. X-ray transformers.
B. X-ray tubes.
C. Masks.
D. Radiation detection gadget.
D. System for detecting radiation. The pace of electrons placing the target in an X-ray tube
is a feature of the:
a. Atomic variety of the cathode material.
B. The material for the filament's atomic quantity. C. Voltage distinction among the cathode
and anode.
D. Modern-day waft within the rectifier circuit.
C. Voltage difference among the cathode and anode.
, The choppy distribution of evolved grains inside the emulsion of a processed X-ray film
reasons the subjective impression of:
a. Graininess.
B. Streaks.
C. Spots.
D. White scum.
A. Graininess.
Co-60 is said to have a 1/2-lifestyles of 5.3 years. By how much have to exposure time be
increased (over that used first of all to supply awesome radiographs while the Co-60 source
became new) when the supply is 2 years old?
A. No alternate in publicity time is needed.
B. The publicity time should be approximately eleven% longer. C. Exposure time should be
about 37% longer.
D. Exposure time have to be approximately sixty two% to 100% longer.
C. Exposure time ought to be approximately 37% longer.
A supply of Ir-192, whose half of-existence is seventy five days, offers an surest publicity of
a given check object nowadays in a duration of 20 min. Five months from now, what
publicity time could be required for the same radiographic density, below comparable
exposure conditions?
A. 10 min
b. 20 min
c. 1 h and 20 min
d. 6 h
c. 1 h and 20 min
Of the subsequent, the supply providing the maximum penetrating radiation is:
a. Co-60.
B. 220 kVp X-ray tube.
C. 15 MeV X-ray betatron.
D electrons from Ir-192.
C. X-ray betatron with 15 MeV. The gamma ray depth at 1 toes (three hundred mm) from a
1 Ci (37 GBq) source of radioactive Co-60 is nearest to:
a. 150 mSv in keeping with hour or 15 R in line with hour b. 1000 R in line with hour (10
000 mSv per hour).
C. 1 R according to min (10 mSv in step with min).
D. 10 mR in line with day (100 μSv in keeping with day).
A. 15 R in keeping with hour (150 mSv consistent with hour).
An X-ray tube's focal factor is as follows: a. Is inclined at an attitude of 30° from ordinary to
the tube axis.
B. Is maintained at a high terrible voltage at some point of operations.
C. Should be as massive as feasible to ensure a slender beam of number one radiation.
D. Ought to be as small as viable with out significantly lowering the tube's lifespan. D. Must
be as small as viable without unduly shortening the life of the tube.
The filament and the focusing cup are the two crucial additives of an X-ray tube: a. The
anode b. Cathode.
Rectifier, c. D. X-ray transformer
b. Cathode.
The amount of radiation on the way to produce, by means of ionization, 1 electrostatic unit
of electricity in 0.001293 g of dry air is called a:
, a. Millicurie.
B. The gamma c. Roentgen.
D. Curie.
Roentgen, C. Typically, an isotopic source's particular pastime is measured in: a. Million
electronvolts (MeV).
B. Curies in keeping with gram (Ci/g) [becquerel per gram (Bq/g)].
C. Roentgen consistent with hour (R/h) [coulomb per kilogram (C/kg)].
D. Counts according to minute (cpm).
B. Curies in keeping with gram (Ci/g) [becquerel per gram (Bq/g)].
Which of the subsequent isotopes has the longest half-existence?
A. Tm-one hundred seventy
b. Co-60
c. Ir-192
d. Cs-137
d. Cs-137
The number one form of strength conversion while electrons strike a target in an X-ray tube
consequences within the manufacturing of:
a. Number one X-rays.
B. Secondary X-rays.
C. X-rays with a short wavelength. D. Warmth
d. Warmth
On a film's characteristic curve, the slope of a directly line connecting points of various
densities is known as the: a. Pace of the curve.
B. Latitude.
C. Average gradient.
D. Density.
C. Common gradient.
An X-ray film having huge latitude also has:
a faulty definition b. Low comparison.
C. Speedy speed d. High common gradient
b. Low assessment.
The reason for circulating oil in some forms of X-ray tubes is to:
a. Lubricate transferring parts.
B. Take in secondary radiation.
C. Decrease the need for high contemporary.
D. Expend warmness.
D. Permit warmness depart. An X-ray tube with a small focal spot is considered higher than
one with a big focal spot while it's far desired to reap:
a. Greater capability of penetration b. Better definition.
C. Less comparison.
D. Greater movie density.
B. Higher definition.
One method of lowering radiographic contrast is to:
a. Increase the gap among the radiation source and the object.
B. Lower the gap between the object and the film.
C. Lower the wavelength of the radiation used.
D. Growth improvement time within producer's hints.
C. Decrease the wavelength of the radiation used.
