ASNT RT LEVEL II Review
Typically, low-voltage X-ray tubes have home windows made of: a. Plastic.
Beryllium, b. C. Glass.
D. Lead.
Beryllium, b. The term "the" refers back to the projected place of an X-ray tube target. A.
Focal spot.
B. Focus.
C. An effective point of recognition. D. Geometric fuzziness c. Effective focal spot.
The trendy technique of producing X-rays includes the sudden deceleration of
excessive-velocity electrons in a strong body called a:
a. Focus cup.
B. The filament c. Goal.
D. Cathode.
C. Goal.
F it have been necessary to radiograph a 7 in. (177.8 mm) thick metallic product, which of
the subsequent gamma-ray resources would most likely be used?
A. Co-60
b. Tm-one hundred seventy
c. Ir-192
d. Cs-137
a. Co-60
A Co-60 gamma-ray source has an approximate sensible thickness restrict of:
a. 2.Five in. (sixty three.5 mm) of metallic or its equivalent.
B. Four in. (one hundred and one.6 mm) of metallic or a similar material. C. Eight in. (203.2
mm) of metal or something comparable. D. 11 in. (279.4 mm) of metal or something
comparable. C. Eight in. (203.2 mm) of steel or its equivalent.
The absorption of gamma rays from a given source while passing thru be counted depends
on:
a. The fabric's thickness, density, and variety of atoms. B. Young's modulus value of the
problem.
C. Poisson's ratio value of the matter.
D. The source's particular activity fee. A. The atomic quantity, density, and thickness of the
matter.
The fact that gases, when bombarded by means of radiation, ionize and emerge as
electrically conductive makes them beneficial in:
a. X-ray transformers.
B. X-ray tubes.
C. Masks.
D. Equipment for detecting radiation. D. Equipment for detecting radiation. The pace of
electrons putting the target in an X-ray tube is a characteristic of the:
a. Atomic quantity of the cathode fabric.
B. Atomic variety of the filament fabric.
, C. Voltage difference between the cathode and anode.
D. Modern-day float within the rectifier circuit.
C. Voltage difference among the cathode and anode.
The choppy distribution of advanced grains within the emulsion of a processed X-ray film
reasons the subjective affect of:
a. The graininess b. Streaks.
C. Spots.
D. White scum.
A. Graininess.
Co-60 is mentioned to have a half of-lifestyles of five.Three years. By how a whole lot need
to publicity time be expanded (over that used first of all to produce splendid radiographs
while the Co-60 source was new) when the source is 2 years antique?
A. The publicity time does no longer want to be altered. B. The publicity time have to be
about 11% longer. C. Exposure time should be approximately 37% longer.
D. Exposure time need to be about sixty two% to one hundred% longer.
C. Exposure time have to be about 37% longer.
In just 20 mins, a source of Ir-192 with a 1/2-existence of seventy five days can give a test
object its first-class publicity these days. Five months from now, what exposure time would
be required for the same radiographic density, below comparable exposure situations?
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 supplying the most penetrating radiation is:
a. Co-60.
B. An X-ray tube with 220 kVp. C. 15 MeV X-ray betatron.
D electrons from Ir-192.
C. 15 MeV X-ray betatron.
The gamma ray intensity at 1 ft (three hundred mm) from a 1 Ci (37 GBq) supply of
radioactive Co-60 is nearest to:
a. 15 R in keeping with hour (a hundred and fifty mSv consistent with hour).
B. One thousand R in step with hour (10 000 mSv consistent with hour).
C. 1 R per min (10 mSv according to min).
D. A hundred Sv per day and 10 mR consistent with day. A. 15 R per hour (a hundred and
fifty mSv in keeping with hour).
The focal spot in an X-ray tube:
a. Is willing at an perspective of 30° from everyday to the tube axis.
B. Is maintained at a excessive bad voltage at some stage in operations.
C. Have to be as massive as viable to make certain a slender beam of number one
radiation.
D. Must be as small as feasible with out unduly shortening the existence of the tube.
D. Need to be as small as possible without unduly shortening the life of the tube.
In an X-ray tube, the filament and focusing cup are the 2 critical elements of the:
a. Anode.
B. The cathode rectifier, c. D. Transformer for X-rays b. Cathode.
A is the amount of radiation that, via ionization, will produce one electrostatic unit of power
in 0.001293 g of dry air. A. Millicurie.
, B. Gamma.
Roentgen, C. D. Curie.
C. Roentgen.
Typically, an isotopic supply's unique interest is measured in: a. Million electronvolts (MeV).
B. Curies in line with gram (Ci/g) [becquerel per gram (Bq/g)].
C. Roentgen in line with hour (R/h) [coulomb per kilogram (C/kg)].
D. Counts per minute (cpm).
B. Curies consistent with gram (Ci/g) [becquerel per gram (Bq/g)].
Which of the following isotopes has the longest 1/2-life?
A. Tm-170
b. Co-60
c. Ir-192
d. Cs-137
d. Cs-137
The number one form of electricity conversion whilst electrons strike a target in an X-ray
tube consequences inside the production of:
a. Number one X-rays.
B. Secondary X-rays.
C. X-rays with a short wavelength. D. Heat
d. Heat
The slope of a straight line becoming a member of two factors of targeted densities on a
feature curve of a film is known as the:
a. Velocity of the curve.
B. Latitude.
C. Common gradient.
D. Density.
C. Average gradient.
An X-ray movie having extensive range also has:
a. Poor definition.
B. Little comparison c. Rapid pace d. High average gradient
b. Little evaluation The motive for circulating oil in a few forms of X-ray tubes is to:
a. Lubricate shifting parts.
B. Take in secondary radiation.
C. Decrease the want for high current.
D. Use up warmth.
D. Deplete warmth.
When it's far desired to attain: an X-ray tube with a small focal spot is regarded as advanced
to 1 with a huge focal spot. A. Extra penetrating power.
B. Better definition.
C. Decrease comparison d. More movie density.
B. Better definition.
One method of decreasing radiographic contrast is to:
a. Increase the distance among the object and the radiation source. B. Decrease the space
among the object and the film.
C. Decrease the wavelength of the radiation used.
D. Boom development time inside manufacturer's tips.
C. Decrease the wavelength of the radiation used.
Typically, low-voltage X-ray tubes have home windows made of: a. Plastic.
Beryllium, b. C. Glass.
D. Lead.
Beryllium, b. The term "the" refers back to the projected place of an X-ray tube target. A.
Focal spot.
B. Focus.
C. An effective point of recognition. D. Geometric fuzziness c. Effective focal spot.
The trendy technique of producing X-rays includes the sudden deceleration of
excessive-velocity electrons in a strong body called a:
a. Focus cup.
B. The filament c. Goal.
D. Cathode.
C. Goal.
F it have been necessary to radiograph a 7 in. (177.8 mm) thick metallic product, which of
the subsequent gamma-ray resources would most likely be used?
A. Co-60
b. Tm-one hundred seventy
c. Ir-192
d. Cs-137
a. Co-60
A Co-60 gamma-ray source has an approximate sensible thickness restrict of:
a. 2.Five in. (sixty three.5 mm) of metallic or its equivalent.
B. Four in. (one hundred and one.6 mm) of metallic or a similar material. C. Eight in. (203.2
mm) of metal or something comparable. D. 11 in. (279.4 mm) of metal or something
comparable. C. Eight in. (203.2 mm) of steel or its equivalent.
The absorption of gamma rays from a given source while passing thru be counted depends
on:
a. The fabric's thickness, density, and variety of atoms. B. Young's modulus value of the
problem.
C. Poisson's ratio value of the matter.
D. The source's particular activity fee. A. The atomic quantity, density, and thickness of the
matter.
The fact that gases, when bombarded by means of radiation, ionize and emerge as
electrically conductive makes them beneficial in:
a. X-ray transformers.
B. X-ray tubes.
C. Masks.
D. Equipment for detecting radiation. D. Equipment for detecting radiation. The pace of
electrons putting the target in an X-ray tube is a characteristic of the:
a. Atomic quantity of the cathode fabric.
B. Atomic variety of the filament fabric.
, C. Voltage difference between the cathode and anode.
D. Modern-day float within the rectifier circuit.
C. Voltage difference among the cathode and anode.
The choppy distribution of advanced grains within the emulsion of a processed X-ray film
reasons the subjective affect of:
a. The graininess b. Streaks.
C. Spots.
D. White scum.
A. Graininess.
Co-60 is mentioned to have a half of-lifestyles of five.Three years. By how a whole lot need
to publicity time be expanded (over that used first of all to produce splendid radiographs
while the Co-60 source was new) when the source is 2 years antique?
A. The publicity time does no longer want to be altered. B. The publicity time have to be
about 11% longer. C. Exposure time should be approximately 37% longer.
D. Exposure time need to be about sixty two% to one hundred% longer.
C. Exposure time have to be about 37% longer.
In just 20 mins, a source of Ir-192 with a 1/2-existence of seventy five days can give a test
object its first-class publicity these days. Five months from now, what exposure time would
be required for the same radiographic density, below comparable exposure situations?
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 supplying the most penetrating radiation is:
a. Co-60.
B. An X-ray tube with 220 kVp. C. 15 MeV X-ray betatron.
D electrons from Ir-192.
C. 15 MeV X-ray betatron.
The gamma ray intensity at 1 ft (three hundred mm) from a 1 Ci (37 GBq) supply of
radioactive Co-60 is nearest to:
a. 15 R in keeping with hour (a hundred and fifty mSv consistent with hour).
B. One thousand R in step with hour (10 000 mSv consistent with hour).
C. 1 R per min (10 mSv according to min).
D. A hundred Sv per day and 10 mR consistent with day. A. 15 R per hour (a hundred and
fifty mSv in keeping with hour).
The focal spot in an X-ray tube:
a. Is willing at an perspective of 30° from everyday to the tube axis.
B. Is maintained at a excessive bad voltage at some stage in operations.
C. Have to be as massive as viable to make certain a slender beam of number one
radiation.
D. Must be as small as feasible with out unduly shortening the existence of the tube.
D. Need to be as small as possible without unduly shortening the life of the tube.
In an X-ray tube, the filament and focusing cup are the 2 critical elements of the:
a. Anode.
B. The cathode rectifier, c. D. Transformer for X-rays b. Cathode.
A is the amount of radiation that, via ionization, will produce one electrostatic unit of power
in 0.001293 g of dry air. A. Millicurie.
, B. Gamma.
Roentgen, C. D. Curie.
C. Roentgen.
Typically, an isotopic supply's unique interest is measured in: a. Million electronvolts (MeV).
B. Curies in line with gram (Ci/g) [becquerel per gram (Bq/g)].
C. Roentgen in line with hour (R/h) [coulomb per kilogram (C/kg)].
D. Counts per minute (cpm).
B. Curies consistent with gram (Ci/g) [becquerel per gram (Bq/g)].
Which of the following isotopes has the longest 1/2-life?
A. Tm-170
b. Co-60
c. Ir-192
d. Cs-137
d. Cs-137
The number one form of electricity conversion whilst electrons strike a target in an X-ray
tube consequences inside the production of:
a. Number one X-rays.
B. Secondary X-rays.
C. X-rays with a short wavelength. D. Heat
d. Heat
The slope of a straight line becoming a member of two factors of targeted densities on a
feature curve of a film is known as the:
a. Velocity of the curve.
B. Latitude.
C. Common gradient.
D. Density.
C. Average gradient.
An X-ray movie having extensive range also has:
a. Poor definition.
B. Little comparison c. Rapid pace d. High average gradient
b. Little evaluation The motive for circulating oil in a few forms of X-ray tubes is to:
a. Lubricate shifting parts.
B. Take in secondary radiation.
C. Decrease the want for high current.
D. Use up warmth.
D. Deplete warmth.
When it's far desired to attain: an X-ray tube with a small focal spot is regarded as advanced
to 1 with a huge focal spot. A. Extra penetrating power.
B. Better definition.
C. Decrease comparison d. More movie density.
B. Better definition.
One method of decreasing radiographic contrast is to:
a. Increase the distance among the object and the radiation source. B. Decrease the space
among the object and the film.
C. Decrease the wavelength of the radiation used.
D. Boom development time inside manufacturer's tips.
C. Decrease the wavelength of the radiation used.
