Review 1
Review 2
Review 3
Review 4
Review 5
100

The voltage difference between cathode and anode is called: 

A) Voltage
B) Current
C) Resistance
D) Potential difference

D) Potential difference

100

Tungsten is used for the target because:
A) It is cheap
B) It glows
C) High melting point and efficiency
D) It is magnetic

C) High melting point and efficiency

100

Electrons carry a:
A) Positive charge
B) Negative charge
C) Neutral charge
D) No charge

B) Negative charge

100

Bremsstrahlung radiation is also called:
A) Braking radiation
B) Characteristic radiation
C) Ionizing radiation
D) Continuous emission

A) Braking radiation

100

The anode heel effect causes:
A) Variation in intensity across the beam
B) Increased scatter
C) Ghosting
D) Higher binding energy

A) Variation in intensity across the beam

200

The voltage difference between cathode and anode is called:
A) Resistance
B) Potential difference
C) Current flow
D) Ionization

B) Potential difference

200

The anode converts electron kinetic energy into:
A) Heat and X-rays
B) Electricity
C) Magnetic fields
D) Current

A) Heat and X-rays

200

The maximum number of electrons per shell is calculated with:
A) 2n²
B) n²
C) 2n
D) n+1

A) 2n²

200

To produce characteristic X-rays, incident electron energy must be:
A) Greater than the binding energy
B) Less than the binding energy
C) Equal to the filament current
D) Equal to kVp

A) Greater than the binding energy

200

Beam quality refers to:
A) Number of photons
B) Ability of photons to penetrate
C) Exposure time
D) Focusing of electrons

B) Ability of photons to penetrate

300

In the tube, electrons flow from:
A) Anode to Cathode
B) Cathode to Anode
C) Positive to Negative
D) Target to filament

B) Cathode to Anode

300

About what percent of interactions at the target produce heat?
A) 10%
B) 50%
C) 99%
D) 100%

C) 99%

300

Electron binding energy is the energy needed to:
A) Accelerate an electron
B) Remove an electron from its shell
C) Create an electron
D) Rotate the anode

B) Remove an electron from its shell

300

The photon energy in characteristic radiation is equal to:
A) Added binding energies
B) Difference between binding energies
C) Current squared
D) Wavelength

B) Difference between binding energies

300

Beam quantity refers to:
A) Number of photons
B) Energy of photons
C) Wavelength
D) Binding energy

A) Number of photons

400

The filament is made of:
A) Copper
B) Tungsten
C) Aluminum
D) Steel

B) Tungsten

400

High-speed electrons are controlled by:
A) kVp
B) mA
C) Time
D) Filament

A) kVp

400

Binding energy is greatest in which shell?
A) K shell
B) L shell
C) M shell
D) N shell

A) K shell

400

The line focus principle reduces the:
A) Effective focal spot size
B) Actual focal spot size
C) Target angle
D) Heat production

A) Effective focal spot size

400

Increasing kVp will:
A) Increase beam penetrability
B) Decrease beam penetrability
C) Only increase photon number
D) Only increase mA

A) Increase beam penetrability

500

The process of “boiling off” electrons is called:
A) Ionization
B) Thermionic emission
C) Binding energy release
D) Bremsstrahlung

B) Thermionic emission

500

Protons carry a:
A) Positive charge
B) Negative charge
C) Neutral charge
D) Double charge

A) Positive charge

500

Ionization occurs when:
A) An electron is removed from an atom
B) Protons leave the nucleus
C) Neutrons split
D) Binding energy decreases

A) An electron is removed from an atom

500

A Smaller effective focal spot results in:
A) Better resolution
B) Less resolution
C) More scatter
D) Lower detail 

A) Better resolution

500

mA controls the:
A) Tube current (# of electrons)
B) Electron speed
C) Penetrability
D) Binding energy

A) Tube current (# of electrons)

600

Exposure time controls:
A) Electron speed
B) Duration x-rays are produced
C) Focal spot size
D) Energy conversion

B) Duration x-rays are produced

600

Doubling the mA or mAs will:
A) Cut exposure in half
B) Double x-ray quantity
C) Increase penetrability
D) Decrease heat

B) Double x-ray quantity

600

The atomic number (Z number) equals:
A) Protons + Neutrons
B) Number of protons
C) Number of electrons
D) Binding energy

B) Number of protons

600

True or False: Binding energy increases the closer an electron is to the nucleus.
True
False

True

600

Characteristic X-rays are produced when:
A) Inner shell electrons are ionized
B) Outer shell electrons are ejected
C) Anode rotates
D) kVp is decreased

A) Inner shell electrons are ionized

700

Which interaction is most dependent on the atomic number of the target?
A) Bremsstrahlung
B) Characteristic
C) Scatter
D) Heel effect

B) Characteristic

700

Which exam would most likely use a small filament?
A) Hand X-ray
B) Abdomen X-ray
C) Chest X-ray
D) Lumbar spine

A) Hand X-ray

700

To take advantage of the heel effect, the thicker body part should be placed:
A) Under the cathode side
B) Under the anode side
C) Centered in the beam
D) Away from the tube

A) Under the cathode side

700

A dual focus x-ray tube refers to a tube that contains:
A)Two filaments, two anodes
B)Two filaments, one anode
C)One filament, two anodes
D) One filament, one anode 

B)Two filaments, one anode

700

X-rays carry a negative charge

A) True

B) False 

B) False 

X-rays are neutral. Electrons carry a negative charge

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