PPI midterm practice (v. 3.0)

The inventor of the hot cathode x-ray tube was _?

• Crookes

• Roentgen

• Coolidge

• Edison

The majority of radiography education programs are based in _?

• colleges

• clinics

• hospitals

• the Internet

A cassette containing a photostimulable phosphor plate is one form of _?

• fluoroscope

• image receptor

• grid device

• transformer

X-rays were discovered in 1895 _?

• United States

• England

• Germany

• China

Which of the following is not basic requirement for the production of x-rays?

• A vacuum

• A source of electrons

• A photostimulable phosphor

• A target

When fast-moving electrons collide with the target of an x-ray tube, the kinetic energy of their motion is converted ino x-rays and _?

• a space charge

• heat

• potential difference (voltage)

• scatter radiation

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

• Radio waves

• Gamma rays

• Microwaves

• Ultraviolet light

Which of the following is not an accurate statement regarding the characteristics of x-rays?

• They can penetrate matter that is impenerable to light.

• They can be refracted by a lens.

• They have an exposure effect on photographic emulsions.

• They cannot be detected by the human senses.

The characteristic most often used to describe the energy of an x-ray beam is its _

• velocity

• space charge

• wavelength

• amplitude

An x-ray beam that has been attenuated by matter is called _

• remnant radiation

• primary radiation

• secondary radiation

• scatter radiation