Radiographic Testing Level 1 test questions with
verified answers
A Co-60 source has a half-life of: Ans✓✓✓ 5.27 years
A curie is the equivalent of: Ans✓✓✓ 37 GBq
A densitometer is an instrument for measuring: Ans✓✓✓ Film Density
A fluorescent intensifying screen will: Ans✓✓✓ Emit light that may
lessen the necessary exposure
A general rule often employed for determining the kilovoltage to be used
when radiographing a part is that: Ans✓✓✓ The kilovoltage should be
as low as other factors will permit
A graph showing the relation between material thickness, kilovoltage,
and exposure is called: Ans✓✓✓ An exposure chart
A graph that expresses the relationship between the logarithm of the
exposure applied to a photographic material and the resulting
photographic density is called: Ans✓✓✓ A characteristic curve
A large source size can be compensated for by: Ans✓✓✓ Increasing the
source-to-specimen distance
, A photographic image recorded by the passage of X-rays or gamma rays
through a specimen onto a film is called a(n): Ans✓✓✓ Radiograph
A sheet of lead with an opening cut in the shape of the part to be
radiographed may be used to decrease the effect of scattered radiation,
which undercuts the specimens. Such a device is called a: Ans✓✓✓
Mask
A thin, metallic sheet (brass, copper, lead, etc.) placed at the source to
reduce the effects of softer radiation is known as: Ans✓✓✓ A filter
Although there may be other reasons for using calcium tungstate screens
in industrial radiography they are most often used to: Ans✓✓✓
Decrease exposure time
An advantage of the pocket dosimeter type of ionization chamber used
to monitor radiation received by personnel is: Ans✓✓✓ It provides an
immediate indication of dosage
An excellent radiograph is obtained under given conditions of exposure
with the film located at a distance of 36 in. (914.4 mm) from the target
of the X-ray tube. If the film is now placed only 18 in. (457.2mm) from
the target, and all exposure conditions except time are held constant, the
new exposure time will be: Ans✓✓✓ Only about 25% as long as the
original exposure time
verified answers
A Co-60 source has a half-life of: Ans✓✓✓ 5.27 years
A curie is the equivalent of: Ans✓✓✓ 37 GBq
A densitometer is an instrument for measuring: Ans✓✓✓ Film Density
A fluorescent intensifying screen will: Ans✓✓✓ Emit light that may
lessen the necessary exposure
A general rule often employed for determining the kilovoltage to be used
when radiographing a part is that: Ans✓✓✓ The kilovoltage should be
as low as other factors will permit
A graph showing the relation between material thickness, kilovoltage,
and exposure is called: Ans✓✓✓ An exposure chart
A graph that expresses the relationship between the logarithm of the
exposure applied to a photographic material and the resulting
photographic density is called: Ans✓✓✓ A characteristic curve
A large source size can be compensated for by: Ans✓✓✓ Increasing the
source-to-specimen distance
, A photographic image recorded by the passage of X-rays or gamma rays
through a specimen onto a film is called a(n): Ans✓✓✓ Radiograph
A sheet of lead with an opening cut in the shape of the part to be
radiographed may be used to decrease the effect of scattered radiation,
which undercuts the specimens. Such a device is called a: Ans✓✓✓
Mask
A thin, metallic sheet (brass, copper, lead, etc.) placed at the source to
reduce the effects of softer radiation is known as: Ans✓✓✓ A filter
Although there may be other reasons for using calcium tungstate screens
in industrial radiography they are most often used to: Ans✓✓✓
Decrease exposure time
An advantage of the pocket dosimeter type of ionization chamber used
to monitor radiation received by personnel is: Ans✓✓✓ It provides an
immediate indication of dosage
An excellent radiograph is obtained under given conditions of exposure
with the film located at a distance of 36 in. (914.4 mm) from the target
of the X-ray tube. If the film is now placed only 18 in. (457.2mm) from
the target, and all exposure conditions except time are held constant, the
new exposure time will be: Ans✓✓✓ Only about 25% as long as the
original exposure time
