physics midterm part 2

the photoelectric effect is more likely to occur with

the focusing cup of the cathode is made of nickel and serves its purpose through electrostatic repulsion

a decrease in kVp will result in:

with regard to the characteristic cascade, an L-shell electron is the only one that can fill a K-shell vacancy

the voltage ripple associated with high frequency generators is...

which of the following is/are components of the secondary or high voltage side of the x-ray circuit?

mA or mAs controls quantity of the x-ray beam

a transformer with 100 units on the primary side and 50 turns on the secondary side...

the voltage ripple for a half wave and full wave are

the effect known as differential absorption is:

a decrease from 200 to 100 mA will result in a decrease in which of the following?

according the line focus principle, a greater angle on the anode target will result in a ___ effective focal spot

this device is wired in the circuit between the autotransformer and the high-voltage transformer

which of the following are directly related to photon energy?

the autotransformer is in the primary circuit

the interaction between x-ray photons and matter illustrated in the picture can be associated with

solid-state diode can be referred to as a rectifier

solid-state diodes in the rectification system help:

part thickness, tissue density, and tissue Z # are all associated with differential absorption

the operating portion of this device consists of silicon-based n-type and p-type conductors

rotor is inside the anode

Ns/Np is turns ratio

the primary function of x-ray beam filtration is to

tissue of ___ atomic number attenuates the x-ray beam more than tissue of ___ atomic number

100% ripple in the x-ray system/circuit means that:

voltage wave forms are created 120 degrees out of phase with one another, this describes:

what metal is added to the filament to increase thermionic emission and extend tube life?

an increase in which of the following will result in an increase in quantity and quality of x-ray photons

Vs/Vp = Ns/Np is the transformer formula

opposing voltage created in a conductor by passing alternating current through it, describes:

according to the ___, the intensity of the x-ray beam is reduced in the ___ side

the device placed in the circuit between the autotransformer and the high-voltage transformer:

in the focusing cup, there is a self-limiting factor tht makes it difficult for additional electrons to be emitted

a high-frequency generator..

the voltage ripple associated with high-frequency generators and full-wave rectification is:

design characteristics of the x-ray tube targets that determine capacity include

kVp controls quality of the x-ray beam

the greater amount of diagnostic x-ray absorption is most likely to occur in which of the following tissues?

the ___ and ___ operate through mutual induction to rotate the anode

what helps make AC to DC?

the autotransformer...

the line focus principle expresses the relationship between

the reduction in intensity of an x-ray beam as it passes through material is termed

the probability of Compton interaction depends upon both the energy of the photon and the Z number of the atom

materials w/ a high Z # may be used when more photoelectric events are needed to differentiate soft tissue structures

which of the following is/are directly related to photon energy?

the fact that x-ray intensity across the primary beam can vary as much as 45% describes the...

which of the following is/are components of the filament circuit?

a cloud of electrons is called a space charge