Question 1

Place the following events leading to the production of x-rays in order, from first to last I. electrons are boiled off filament
II) electricity leaves the autotransformer
III) electricity goes to primary side of step-down transformer
IV) filament is heated

Accepted Answer

The correct sequence for the production of x-rays starts with electricity leaving the autotransformer (II), then it goes to the primary side of the step-down transformer (III), which leads to the heating of the filament (IV), and finally, electrons are boiled off the filament (I).

Question 2

Lines of flux in the same direction attract each other.

Accepted Answer

Lines of flux in the same direction repel each other, while lines of flux in opposite directions attract each other. This is consistent with the behavior of magnetic fields.

Question 3

Place the following events leading to the production of x-rays in order, from first to last I. kilovoltage is rectified
II) voltage is adjusted at the autotransformer
III) anode and cathode develop large positive and negative charges
IV) voltage changes to kilovoltage

Accepted Answer

The correct sequence for the production of x-rays starts with adjusting the voltage at the autotransformer (II), which is then changed to kilovoltage (IV). Following this, the kilovoltage is rectified (I), and finally, the anode and cathode develop large positive and negative charges (III), facilitating the production of x-rays.

Question 4

A general purpose radiographic tube typically has ____ filament(s).

Accepted Answer

A general purpose radiographic tube typically has two filaments, a large and a small one, to accommodate different focal spot sizes for various imaging needs.

Question 5

Water is a good conductor.

Accepted Answer

The answer of Water is a good conductor....

Question 6

The purpose of the filament circuit is to

Accepted Answer

The purpose of the filament circuit in an X-ray tube is to heat the filament to a high temperature, which causes thermionic emission, or "boiling off" of electrons from the filament. This process is essential for generating the electron stream that is subsequently accelerated and focused onto the anode to produce X-rays.

Question 7

Which of the following occurs first in the sequence of events leading to x-ray production?

Accepted Answer

The sequence begins with the adjustment of current by the rheostat, which controls the amount of current flowing through the x-ray tube circuit.

Question 8

Place the following events leading to the production of x-rays in order, from first to last I. resistance is adjusted at the rheostat
II) filament is heated
III) filament current is increased
IV) electrons are boiled off filament

Accepted Answer

The correct sequence for the production of x-rays starts with adjusting the resistance at the rheostat (I), which controls the current flowing through the filament. Increasing the filament current (III) follows, which leads to the heating of the filament (II). As the filament heats up, electrons are boiled off the filament (IV), a process essential for generating x-rays.

Question 9

Determining which filament will be used during an exposure is done at the operating console by the selection of

Accepted Answer

The selection of a small or large focal spot at the operating console determines which filament will be used during an exposure, as the focal spot size is directly related to the filament size used in the x-ray tube.

Question 10

Which of the following occurs first in the sequence of events leading to x-ray production?

Accepted Answer

The answer of Which of the following occurs first in...

Question 11

The selection of the large or small filament in the cathode depends on the choice of focal spot size at the operating console and the

Accepted Answer

The mA station selected determines the filament size because different mA settings correspond to different filament currents, which in turn affect the focal spot size.

Question 12

Adjusting the rheostat changes the _______________ in the ______________ circuit.

Accepted Answer

Adjusting the rheostat changes the resistance in the filament circuit, allowing for control over the current and, consequently, the brightness or intensity of the filament.

Question 13

Only electrons are free to move in solid conductors.

Accepted Answer

In solid conductors, electrons are the charge carriers that are free to move, while the positive ions remain fixed in place within the lattice structure.

Question 14

Electric charges are found only on the outside of a conductor.

Accepted Answer

In a conductor, electric charges reside on the surface because they repel each other and seek to maximize their distance apart, which can only happen on the surface.

Question 15

mAs is

Accepted Answer

mAs (milliampere-seconds) is indeed the product of milliamperes (mA) and exposure time in seconds, which directly influences the amount of radiation the patient is exposed to during an X-ray procedure. This parameter is crucial in determining the quality and the dose of the radiographic exposure.

Question 16

How much current is needed to heat the filament enough to produce a 100-1000 mA tube current?

Accepted Answer

The answer of How much current is needed to heat...

Question 17

Which of the following requires the greatest amount of resistance in the filament circuit?

Accepted Answer

The amount of resistance required in a filament circuit is inversely proportional to the current. Therefore, the lower the current (50 mA), the greater the resistance needed.

Question 18

Place the following events leading to the production of x-rays in order, from first to last I. alternating current is converted to direct current
II) voltage is adjusted at the autotransformer
III) kilovoltage leaves the step-up transformer
IV) voltage goes to primary side of step-up transformer

Accepted Answer

The correct order is: II, IV, III, I. First, the voltage is adjusted at the autotransformer (II). Then, the voltage goes to the primary side of the step-up transformer (IV). Next, the kilovoltage leaves the step-up transformer (III). Finally, the alternating current is converted to direct current (I).

Question 19

The rate of flow of electrons passing through the x-ray tube during an exposure is

Accepted Answer

The rate of flow of electrons passing through the x-ray tube during an exposure is determined by the tube current, which is measured in milliamperes (mA).

Question 20

The primary purpose of the step-down transformer is to

Accepted Answer

The answer of The primary purpose of the step-down transformer...

Quiz 4: The X-Ray Circuit

Place the following events leading to the production of x-rays in order, from first to last I. electrons are boiled off filament II) electricity leaves the autotransformer III) electricity goes to primary side of step-down transformer IV) filament is heated

Lines of flux in the same direction attract each other.

Place the following events leading to the production of x-rays in order, from first to last I. kilovoltage is rectified II) voltage is adjusted at the autotransformer III) anode and cathode develop large positive and negative charges IV) voltage changes to kilovoltage

A general purpose radiographic tube typically has ____ filament(s) .

Water is a good conductor.

The purpose of the filament circuit is to

Which of the following occurs first in the sequence of events leading to x-ray production?

Place the following events leading to the production of x-rays in order, from first to last I. resistance is adjusted at the rheostat II) filament is heated III) filament current is increased IV) electrons are boiled off filament

Determining which filament will be used during an exposure is done at the operating console by the selection of

Which of the following occurs first in the sequence of events leading to x-ray production?

The selection of the large or small filament in the cathode depends on the choice of focal spot size at the operating console and the

Adjusting the rheostat changes the _ in the circuit.

Only electrons are free to move in solid conductors.

Electric charges are found only on the outside of a conductor.

mAs is

How much current is needed to heat the filament enough to produce a 100-1000 mA tube current?

Which of the following requires the greatest amount of resistance in the filament circuit?

Place the following events leading to the production of x-rays in order, from first to last I. alternating current is converted to direct current II) voltage is adjusted at the autotransformer III) kilovoltage leaves the step-up transformer IV) voltage goes to primary side of step-up transformer

The rate of flow of electrons passing through the x-ray tube during an exposure is

The primary purpose of the step-down transformer is to