Page 1 of 21
MEAGHAN PIRETTI QUESTIONS AND CORRECT ANSWERS 100% VERIFIED
SOLUTIONS GRADED TO PASS FOR 2026.
If the degree of anode angle decreases - will that increase or decrease the anode heel effect?
decrease
Define Line Focus Principle
the relationship between the actual focal spot on the anode and the effective focal spot that extends
from the anode
Which is larger, Actual focal spot or Effective focal spot?
actual focal spot
Where is the actual focal spot located?
anode
Which one goes toward the patient?
effective focal spot
If you decrease anode angle (choose small focal spot) how will that affect the effective focal spot
size?
increase in spatial resolution
Define Off-Focus Radiation
occurs when electrons collide with tube components outside the focal spot
Define Tube Loading
the heat created within the x-ray tube
What is the math formula for tube loading?
kVp x mA x s x Waveform factor
What is the waveform factor of a single phase generator?
1
what is the waveform factor of a three phase six pulse generator
1.35
what is the waveform factor of a three phase twelve pulse generator?
1.41
what is the waveform factor o a high frequency generator?
, Page 2 of 21
1.45
What is the difference between a series circuit and a parallel circuit.
in a series circuit the current is constant and in a parallel circuit the voltage is constant
Which current has the same current flow through all at once and is all equal?
series circuit
which circuit has a network of electrical components each connected to the power source by a
different path?
parellel circuit
Define Amperes.
the rate at which electrons flow through the circuit
Define Voltage.
the force that pushes electrons through a circuit
Define Resistance.
the force that slows down electrons in a circuit
What is the role of the AC supply?
suppose the x-ray unit with primary or low voltage
What is the role of the master wall switch?
provides the electrical connection between the external power supply and the x-ray unit
What is the role of the fuses?
interrupts the electrical connection between the external power supply and the x-ray unit in the
event of an electrical hazard developing within the x-ray circuitry
What is the role of the line voltage meter?
provides a means for measuring the incoming line voltage to detect the presence of a voltage surge
or drop
what is the role of the autotransformer?
determines the amount of line voltage that will be sent to the step up transformer
what is the role of the line voltage compensator?
designed to maintain a constant volt/turns ratio within the autotransformer
what is the role of the step up transformer?
, Page 3 of 21
converts the incoming low voltage from the secondary side of the autotransformer into the
kilovoltage required to produce x-radiation
what is the role of the step down transformer?
adjusts the amount of current and voltage supplied to the filament of the radiographic tube
Which side of the Xray tube is positive?
anode
Which side of the Xray tube is negative?
cathode
What is the role of the glass envelope?
creates an air free vacuum around the cathode and the anode
What is the role of the tube housing?
prevents X-rays from being emitted throughout the exam room
What end of the tube has the filament and the focusing cup?
cathode
What are the types of anodes?
stationary and rotating
What is the anode made of?
tungsten-rhenium alloy
Why is tungsten with rhenium the preferred material for the anode?
high atomic number and melting point
What is the Induction motor?
turns the anode without contacting the anode
what is a stator?
activated in series to induce the turning rotor
what does the rotor do?
rotating tube shaft attached to the anode disc
what do the bearing do?
low friction spheres that allow for free rotation of the rotor
Define anode heel effect
MEAGHAN PIRETTI QUESTIONS AND CORRECT ANSWERS 100% VERIFIED
SOLUTIONS GRADED TO PASS FOR 2026.
If the degree of anode angle decreases - will that increase or decrease the anode heel effect?
decrease
Define Line Focus Principle
the relationship between the actual focal spot on the anode and the effective focal spot that extends
from the anode
Which is larger, Actual focal spot or Effective focal spot?
actual focal spot
Where is the actual focal spot located?
anode
Which one goes toward the patient?
effective focal spot
If you decrease anode angle (choose small focal spot) how will that affect the effective focal spot
size?
increase in spatial resolution
Define Off-Focus Radiation
occurs when electrons collide with tube components outside the focal spot
Define Tube Loading
the heat created within the x-ray tube
What is the math formula for tube loading?
kVp x mA x s x Waveform factor
What is the waveform factor of a single phase generator?
1
what is the waveform factor of a three phase six pulse generator
1.35
what is the waveform factor of a three phase twelve pulse generator?
1.41
what is the waveform factor o a high frequency generator?
, Page 2 of 21
1.45
What is the difference between a series circuit and a parallel circuit.
in a series circuit the current is constant and in a parallel circuit the voltage is constant
Which current has the same current flow through all at once and is all equal?
series circuit
which circuit has a network of electrical components each connected to the power source by a
different path?
parellel circuit
Define Amperes.
the rate at which electrons flow through the circuit
Define Voltage.
the force that pushes electrons through a circuit
Define Resistance.
the force that slows down electrons in a circuit
What is the role of the AC supply?
suppose the x-ray unit with primary or low voltage
What is the role of the master wall switch?
provides the electrical connection between the external power supply and the x-ray unit
What is the role of the fuses?
interrupts the electrical connection between the external power supply and the x-ray unit in the
event of an electrical hazard developing within the x-ray circuitry
What is the role of the line voltage meter?
provides a means for measuring the incoming line voltage to detect the presence of a voltage surge
or drop
what is the role of the autotransformer?
determines the amount of line voltage that will be sent to the step up transformer
what is the role of the line voltage compensator?
designed to maintain a constant volt/turns ratio within the autotransformer
what is the role of the step up transformer?
, Page 3 of 21
converts the incoming low voltage from the secondary side of the autotransformer into the
kilovoltage required to produce x-radiation
what is the role of the step down transformer?
adjusts the amount of current and voltage supplied to the filament of the radiographic tube
Which side of the Xray tube is positive?
anode
Which side of the Xray tube is negative?
cathode
What is the role of the glass envelope?
creates an air free vacuum around the cathode and the anode
What is the role of the tube housing?
prevents X-rays from being emitted throughout the exam room
What end of the tube has the filament and the focusing cup?
cathode
What are the types of anodes?
stationary and rotating
What is the anode made of?
tungsten-rhenium alloy
Why is tungsten with rhenium the preferred material for the anode?
high atomic number and melting point
What is the Induction motor?
turns the anode without contacting the anode
what is a stator?
activated in series to induce the turning rotor
what does the rotor do?
rotating tube shaft attached to the anode disc
what do the bearing do?
low friction spheres that allow for free rotation of the rotor
Define anode heel effect
