Question 1

What is direct current?

Accepted Answer

A)  Circuit connected in series 
B)  Circuit connected in parallel 
C)  Current that alternates in flow from positive to negative 
D)  Current that flows in only one direction 
A)  Circuit connected in series 
B)  Circuit connected in parallel 
C)  Current that alternates in flow from positive to negative 
D)  Current that flows in only one direction D

Question 2

In radiology,high-frequency generators can use up to what electrical frequency?

Accepted Answer

A)  6,000 Hz 
B)  8,000 Hz 
C)  10,000 Hz 
D)  10,000 MHz 
A)  6,000 Hz 
B)  8,000 Hz 
C)  10,000 Hz 
D)  10,000 MHz A

Question 3

What is the name of the innermost shell of an atom?

Accepted Answer

A)  A shell 
B)  K shell 
C)  Z shell 
D)  Nuclear shell 
A)  A shell 
B)  K shell 
C)  Z shell 
D)  Nuclear shell B

Question 4

Which electron shell in the electron has the greatest binding energy?

Accepted Answer

A)  K 
B)  L 
C)  M 
D)  N 
A)  K 
B)  L 
C)  M 
D)  N

Question 5

The milliamperage used in radiology is:

Accepted Answer

A)  25. 
B)  500. 
C)  100 to 200. 
D)  25 to 500. 
A)  25. 
B)  500. 
C)  100 to 200. 
D)  25 to 500.

Question 6

The purpose of a transformer is to:

Accepted Answer

A)  convert alternating current into direct current. 
B)  convert direct current into alternating current. 
C)  increase or decrease voltage. 
D)  vary the amperage in a circuit. 
A)  convert alternating current into direct current. 
B)  convert direct current into alternating current. 
C)  increase or decrease voltage. 
D)  vary the amperage in a circuit.

Question 7

Which of the following is an accurate statement regarding the characteristics of x-rays? They can:

Accepted Answer

A)  penetrate matter. 
B)  cause certain crystals to become radioactive. 
C)  be refracted by a lens. 
D)  be detected by the human senses. 
A)  penetrate matter. 
B)  cause certain crystals to become radioactive. 
C)  be refracted by a lens. 
D)  be detected by the human senses.

Question 8

Which of the following are forms of matter?
1) Electric current
2) Solids
3) Gases

Accepted Answer

A)  1 and 2 only 
B)  1 and 3 only 
C)  2 and 3 only 
D)  1, 2, and 3 
A)  1 and 2 only 
B)  1 and 3 only 
C)  2 and 3 only 
D)  1, 2, and 3

Question 9

If the voltage across the primary side of a step-up transformer is 100 V and the transformer has a 500:1 ratio,what is the voltage on the secondary side?

Accepted Answer

A)  25,000 
B)  50,000 
C)  75,000 
D)  100,000 
A)  25,000 
B)  50,000 
C)  75,000 
D)  100,000

Question 10

The unit of potential difference is the:

Accepted Answer

A)  ampere. 
B)  volt. 
C)  ohm. 
D)  milliampere. 
A)  ampere. 
B)  volt. 
C)  ohm. 
D)  milliampere.

Question 11

The frequency of a sine wave is measured by the:

Accepted Answer

A)  number of times per minute that a crest passes a given point. 
B)  number of times per second that a crest passes a given point. 
C)  velocity multiplied by the wavelength. 
D)  velocity minus the wavelength. 
A)  number of times per minute that a crest passes a given point. 
B)  number of times per second that a crest passes a given point. 
C)  velocity multiplied by the wavelength. 
D)  velocity minus the wavelength.

Question 12

What term refers to the force or strength of the electron flow in the current?

Accepted Answer

A)  Potential difference 
B)  Resistance 
C)  Circuit 
D)  Ampere 
A)  Potential difference 
B)  Resistance 
C)  Circuit 
D)  Ampere

Question 13

Of the following types of electromagnetic energy,which has the shortest wavelength?

Accepted Answer

A)  Radio waves 
B)  X-rays 
C)  Microwaves 
D)  Ultraviolet light 
A)  Radio waves 
B)  X-rays 
C)  Microwaves 
D)  Ultraviolet light

Question 14

The standard voltage provided by utility companies for household use is _____ volts.

Accepted Answer

A)  100 
B)  120 
C)  220 
D)  440 
A)  100 
B)  120 
C)  220 
D)  440

Question 15

The "building blocks" of all matter are called:

Accepted Answer

A)  electrons. 
B)  atoms. 
C)  protons. 
D)  neutrons. 
A)  electrons. 
B)  atoms. 
C)  protons. 
D)  neutrons.

Question 16

X-rays consist of:

Accepted Answer

A)  tungsten atoms. 
B)  electricity. 
C)  electromagnetic energy. 
D)  fast-moving electrons. 
A)  tungsten atoms. 
B)  electricity. 
C)  electromagnetic energy. 
D)  fast-moving electrons.

Question 17

Which of the following transformers would have more windings on the primary side?

Accepted Answer

A)  High-tension transformer 
B)  Step-up transformer 
C)  Step-down transformer 
D)  Autotransformer 
A)  High-tension transformer 
B)  Step-up transformer 
C)  Step-down transformer 
D)  Autotransformer

Question 18

The basis for the operation of a transformer is:

Accepted Answer

A)  60-Hz electric current. 
B)  rectification. 
C)  step-up or step-down windings. 
D)  electromagnetic induction. 
A)  60-Hz electric current. 
B)  rectification. 
C)  step-up or step-down windings. 
D)  electromagnetic induction.

Question 19

Which of the following energy types occurs in the form of a sine wave?

Accepted Answer

A)  Magnetic energy 
B)  Kinetic energy 
C)  Electromagnetic energy 
D)  Thermal energy 
A)  Magnetic energy 
B)  Kinetic energy 
C)  Electromagnetic energy 
D)  Thermal energy

Question 20

Ionization is the process:

Accepted Answer

A)  of producing an electric current. 
B)  required for producing antimatter. 
C)  of producing an atom with an electric charge. 
D)  of destroying an atom. 
A)  of producing an electric current. 
B)  required for producing antimatter. 
C)  of producing an atom with an electric charge. 
D)  of destroying an atom.

Exam 4: Basic Physics of Radiography

What is direct current?

In radiology,high-frequency generators can use up to what electrical frequency?

What is the name of the innermost shell of an atom?

Which electron shell in the electron has the greatest binding energy?

The milliamperage used in radiology is:

The purpose of a transformer is to:

Which of the following is an accurate statement regarding the characteristics of x-rays? They can:

Which of the following are forms of matter? 1) Electric current 2) Solids 3) Gases

If the voltage across the primary side of a step-up transformer is 100 V and the transformer has a 500:1 ratio,what is the voltage on the secondary side?

The unit of potential difference is the:

The frequency of a sine wave is measured by the:

What term refers to the force or strength of the electron flow in the current?

Of the following types of electromagnetic energy,which has the shortest wavelength?

The standard voltage provided by utility companies for household use is _____ volts.

The "building blocks" of all matter are called:

X-rays consist of:

Which of the following transformers would have more windings on the primary side?

The basis for the operation of a transformer is:

Which of the following energy types occurs in the form of a sine wave?

Ionization is the process:

Role of the Limited X-Ray Machine Operator

Introduction to Radiographic Equipment

Basic Mathematics for Limited Operators

X-Ray Production

X-Ray Circuit and Tube Heat Management

Principles of Exposure and Image Quality

Digital Image Receptor Systems

Scatter Radiation and Its Control

Formulating X-Ray Techniques

Radiobiology and Radiation Safety

Introduction to Anatomy, positioning, and Pathology

Upper Extremity and Shoulder Girdle

Lower Extremity and Pelvis

Spine

Bony Thorax, Chest, and Abdomen

Skull, Facial Bones, and Paranasal Sinuses

Radiography of Pediatric and Geriatric Patients

Image Evaluation

Ethics, Legal Considerations, and Professionalism

Safety and Infection Control

Assessing Patients and Managing Acute Situations

Medications and Their Administration

Medical Laboratory Skills

Additional Procedures for Assessment and Diagnosis

Bone Densitometry

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