TEST BANK FOR RADIOGRAPHIC IMAGING AND
EXPOSURE 6TH EDITION BY FAUBER
# Test Bank for Radiographic Imaging and Exposure 6th Edition by Fauber
## MULTIPLE CHOICE
**1. The is the portion of the x-ray tube that contains the filament.**
a. cathode
b. anode
c. rotor
d. rotating disk
**ANS: A** — The filament, the source of electrons during x-ray production, is located in the cathode.
---
**2. The cathode filament is made of:**
a. tungsten.
b. rhenium.
c. molybdenum.
d. lead.
e. nickel.
,**ANS: A** — The cathode filament is made of tungsten.
---
**3. The focusing cup:**
a. surrounds the anode.
b. has a positive charge.
c. has a negative charge.
d. focuses the x-ray beam.
**ANS: C** — The focusing cup, surrounding the filament on three sides, has a negative charge, keeping
the negatively charged electrons focused.
---
**4. In a dual-focus tube, how many filaments are energized at any one-time during x-ray production?**
a. One
b. Two
c. Four
d. An infinite number
**ANS: A** — Only one filament is energized at any one-time during x-ray production.
---
**5. The focusing cup is made of:**
, a. tungsten.
b. rhenium.
c. molybdenum.
d. lead.
e. nickel.
**ANS: E** — The focusing cup is made of nickel.
---
**6. is the phenomenon that occurs around the filament during thermionic emission and prevents the
further escape of electrons from the filament.**
a. Saturation current
b. Space charge effect
c. mA rectification
d. Line focus principle
**ANS: B** — The space charge effect limits the number of electrons in the space charge by preventing
additional electrons from being boiled off the filament.
---
**7. The positive side of the x-ray tube is the:**
a. anode.
b. cathode.
c. window.
EXPOSURE 6TH EDITION BY FAUBER
# Test Bank for Radiographic Imaging and Exposure 6th Edition by Fauber
## MULTIPLE CHOICE
**1. The is the portion of the x-ray tube that contains the filament.**
a. cathode
b. anode
c. rotor
d. rotating disk
**ANS: A** — The filament, the source of electrons during x-ray production, is located in the cathode.
---
**2. The cathode filament is made of:**
a. tungsten.
b. rhenium.
c. molybdenum.
d. lead.
e. nickel.
,**ANS: A** — The cathode filament is made of tungsten.
---
**3. The focusing cup:**
a. surrounds the anode.
b. has a positive charge.
c. has a negative charge.
d. focuses the x-ray beam.
**ANS: C** — The focusing cup, surrounding the filament on three sides, has a negative charge, keeping
the negatively charged electrons focused.
---
**4. In a dual-focus tube, how many filaments are energized at any one-time during x-ray production?**
a. One
b. Two
c. Four
d. An infinite number
**ANS: A** — Only one filament is energized at any one-time during x-ray production.
---
**5. The focusing cup is made of:**
, a. tungsten.
b. rhenium.
c. molybdenum.
d. lead.
e. nickel.
**ANS: E** — The focusing cup is made of nickel.
---
**6. is the phenomenon that occurs around the filament during thermionic emission and prevents the
further escape of electrons from the filament.**
a. Saturation current
b. Space charge effect
c. mA rectification
d. Line focus principle
**ANS: B** — The space charge effect limits the number of electrons in the space charge by preventing
additional electrons from being boiled off the filament.
---
**7. The positive side of the x-ray tube is the:**
a. anode.
b. cathode.
c. window.
