EFD EXAM 2 COMPETENCY REVIEW 2026
MOCK TEST COMPLETE KEY INSIGHTS
◉ Which of the following methods utilizes a detector that captures
x-ray energy and converts it into an electronic signal?
a. indirect capture
b. CCD
c. cassette based radiography
d. direct capture.
Answer: d. direct capture
◉ The energy of a characteristic x-ray photon created when an L
shell electron fills a K shell vacancy in a tungsten atom will have
which of the following energies?
a. 69.5 keV
b. 57.5 keV
c. 91.5 keV
d. 12 keV.
Answer: b. 57.5 keV
The energy of characteristic photons is determined by the difference
in binding energies between the two electron shells involved in the
,process, which in this question are K and L shells. 69.5 (K shell)
minus 12 (L shell) equals 57.5.
◉ Identify the position that will place the positive contrast agent in
the body of the stomach and pyloris during a double contrast upper
GI exam?
a. recumbent LPO
b. supine
c. recumbent RPO
d. prone.
Answer: d. prone
◉ which position/projection will best demonstrate the broad aspect
of the frontal air sinus?.
Answer: PA
◉ Which position will best demonstrate the right axillary portion of
the ribs?.
Answer: RPO
◉ Which position will emphasize the mucosal lining of the medial
wall of the descending colon during a lower GI exam?.
Answer: left lateral decubitus
,◉ Which projection of the wrist will best demonstrate the
interspaces of the carpal bone?.
Answer: AP
◉ An image is acquired with computed radiography using which of
the following methods?
a. a cassette that is electronically charged
b. conventional film/screen processing
c. the use of a storage phosphor
d. nonne of the above.
Answer: c. the use of a storage phosphor
◉ A transformer constructed with 10,00 primary turns and 2,500
secondary turns will yield an output voltage of _____ when being
supplied with 210 volts.
a. 2710 volts
b. 52.5 volts
c. 840 volts
d. 525 volts.
Answer: b. 52.5 volts
, ◉ Which of the following circuit components is considered to be the
source for kVp?
a. step-up transformer
b. autotransformer
c. step-down transformer
d. high voltage transformer.
Answer: b. autotransformer
◉ Which of the following meds is administered to a patient during
an allergic reaction?
a. Adenocard
b. Intropin
c. Lasix
d. Decadron.
Answer: d. Decadron
◉ If the improper body part is selected from the exam menu, which
of the following may result?
a. there will be no image
b. there may be image misinterpretation
c. will exhibit proper contrast and density
d. image sharpness will not be affected.
MOCK TEST COMPLETE KEY INSIGHTS
◉ Which of the following methods utilizes a detector that captures
x-ray energy and converts it into an electronic signal?
a. indirect capture
b. CCD
c. cassette based radiography
d. direct capture.
Answer: d. direct capture
◉ The energy of a characteristic x-ray photon created when an L
shell electron fills a K shell vacancy in a tungsten atom will have
which of the following energies?
a. 69.5 keV
b. 57.5 keV
c. 91.5 keV
d. 12 keV.
Answer: b. 57.5 keV
The energy of characteristic photons is determined by the difference
in binding energies between the two electron shells involved in the
,process, which in this question are K and L shells. 69.5 (K shell)
minus 12 (L shell) equals 57.5.
◉ Identify the position that will place the positive contrast agent in
the body of the stomach and pyloris during a double contrast upper
GI exam?
a. recumbent LPO
b. supine
c. recumbent RPO
d. prone.
Answer: d. prone
◉ which position/projection will best demonstrate the broad aspect
of the frontal air sinus?.
Answer: PA
◉ Which position will best demonstrate the right axillary portion of
the ribs?.
Answer: RPO
◉ Which position will emphasize the mucosal lining of the medial
wall of the descending colon during a lower GI exam?.
Answer: left lateral decubitus
,◉ Which projection of the wrist will best demonstrate the
interspaces of the carpal bone?.
Answer: AP
◉ An image is acquired with computed radiography using which of
the following methods?
a. a cassette that is electronically charged
b. conventional film/screen processing
c. the use of a storage phosphor
d. nonne of the above.
Answer: c. the use of a storage phosphor
◉ A transformer constructed with 10,00 primary turns and 2,500
secondary turns will yield an output voltage of _____ when being
supplied with 210 volts.
a. 2710 volts
b. 52.5 volts
c. 840 volts
d. 525 volts.
Answer: b. 52.5 volts
, ◉ Which of the following circuit components is considered to be the
source for kVp?
a. step-up transformer
b. autotransformer
c. step-down transformer
d. high voltage transformer.
Answer: b. autotransformer
◉ Which of the following meds is administered to a patient during
an allergic reaction?
a. Adenocard
b. Intropin
c. Lasix
d. Decadron.
Answer: d. Decadron
◉ If the improper body part is selected from the exam menu, which
of the following may result?
a. there will be no image
b. there may be image misinterpretation
c. will exhibit proper contrast and density
d. image sharpness will not be affected.
