DANB RHS Exam Study Guide Questions with Correct Answers
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Course
DANB RHS
Institution
DANB RHS
DANB RHS Exam Study Guide Questions with Correct Answers
The sharpness of definition of the radiograph is determined by the
a)anode
b) cathode
c) electric circuit
d) focal spot - Answer-d
Within the xray machine the direction of electric current flows from the
a) anode to cathode
b...
DANB RHS Exam Study Guide
Questions with Correct Answers
The sharpness of definition of the radiograph is determined by the
a)anode
b) cathode
c) electric circuit
d) focal spot - Answer-d
Within the xray machine the direction of electric current flows from the
a) anode to cathode
b) target of the anode to the filament of the wire
c) filament of the cathode to the target of the anode
d) none of the above - Answer-c
The amperage control determines the
a) number of free electrons at the cathode filament
b) speed of electrons toward the target
c) duration of exposure
d) none of the above - Answer-a
When the amperage is increased of the master control unit the amount of radiation
produced will
a)decrease
b)increase
c) stay the same - Answer-b
The highest voltage to which the current in the tube rises during an exposure is called
a) kvp peak
b) millamperage
c) millamperage seconds
d) none of the above - Answer-a
What Factor must be changed in order to maintain optimum film density when the
tungsten target film distance is increased
, a) exposure time
b) developing time
c) fixing time
d) none of the above - Answer-a
When the target film distance is doubled and the film speed and the machine variables
remain constant the exposure time will.
a) increase by ninefold
b) decrease by ninefold
c) increase by fourfold
d) decrease by fourfold - Answer-c
the total radiation generated during dental radiographic exposure is deterimined by
a) MA
b) exposure time
c) kvp
d) millampere seconds - Answer-d
a decrease in the MA will lighten the density of the radiograph
a) true
b) false - Answer-a
long scale contrast indicate that the density diffrences between areas on the processed
radiographs will appear small
a) true
b) false - Answer-a
what diffrences in density will be evident on a processed film that has short film contrast
a) few shades of gray
b) more shades of gray
c) black and white only
d) non of the above - Answer-a
foreshorting of the film is due to ___ of the PID
a) too much verticle angulation
b) too little verticle angulation
c) too much horizontal angulation
d) too little hortizontal anugulation - Answer-a
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