BXMO REVIEW WITH VERIFIED ANSWERS
As an x-ray tube ages, the inside can become coated with tungsten, which can cause
_____ in the tube.
a. off-focus radiation
b. convection
c. anode pitting
d. arcing - Answers - arcing
Tungsten coating within the tube can cause arcing.
The filament is made of _____.
a. copper
b. graphite
c. molybdenum
d. tungsten - Answers - tungsten
Thermionic emission at the filament creates a _____.
a. grid control
b. heel effect
c. line focus
d. space charge - Answers - space charge
The rotating anode is turned by a _____.
a. mechanical pulley
b. thermal cushion
c. magnetic field
d. rotating belt - Answers - magnetic field
The induction motor works by electromagnetic induction.
The target of the rotating anode is usually coated with a _____ alloy.
a. molybdenum
b. tungsten
c. graphite
d. copper - Answers - tungsten
Because of the line focus principal, the effective focal spot size decreases with
decreasing _____.
a. rotor speed
b. target angle
c. window thickness
d. space charge - Answers - target angle
The size of the effective focal spot decreases as the target angle decreases.
As an x-ray tube ages, the inside can become coated with tungsten, which can cause
_____ in the tube.
a. off-focus radiation
b. convection
c. anode pitting
d. arcing - Answers - arcing
Tungsten coating within the tube can cause arcing.
The filament is made of _____.
a. copper
b. graphite
c. molybdenum
d. tungsten - Answers - tungsten
Thermionic emission at the filament creates a _____.
a. grid control
b. heel effect
c. line focus
d. space charge - Answers - space charge
The rotating anode is turned by a _____.
a. mechanical pulley
b. thermal cushion
c. magnetic field
d. rotating belt - Answers - magnetic field
The induction motor works by electromagnetic induction.
The target of the rotating anode is usually coated with a _____ alloy.
a. molybdenum
b. tungsten
c. graphite
d. copper - Answers - tungsten
Because of the line focus principal, the effective focal spot size decreases with
decreasing _____.
a. rotor speed
b. target angle
c. window thickness
d. space charge - Answers - target angle
The size of the effective focal spot decreases as the target angle decreases.
