A general rule governing the application of the geometric principles of shadow formation states that the:

All other factors being the same, radiographic sharpness or definition is improved by using:

The minimum source-to-film distance needed to produce acceptable radiographs depends on the focal spot (source) size, the maximum allowable unsharpness, and the:

Which of the following should be done to preserve radiographs during long-term storage?

The difference in density between different parts of a radiograph is called:

Heat affected zone cracking is not easily detected with radiographic testing because:

Inherent discontinuities are those found in:

A front filter at the film or at the source, or multiple-films in the same holder, are techniques that are used to compensate for

The energy level of X-rays is controlled by the:

The specific activity of a gamma ray source is important because it determines:

In radiography the term “RBE” stands for:

The radiation effects which can be passed on to the offspring or to a later generation of a person receiving radiation are called:

The pocket dosimeter has the advantage of:

. When ionizing radiation enters the ion chamber of an ionization chamber survey meter, positive ions flow to the negative electrode(s) and negative ions flow to the positive electrode(s).

The formula for the inverse square law is:

Inherent unsharpness is caused by free electrons that are generated by the radiographic ray as it passes through:

Lead foil is placed behind the film to:

M1 x T1 = M2 x T2 and C2 x T2 = C2 x T2 are equations for the:

The factor equation is:

The maximum film density to which the radiograph should be exposed is dependent upon

The emulsion or image layer of the unexposed film contains grains of:

All other factors being equal, which two types of film would give the sharpest images?

Low voltage X-ray tubes are generally fitted with windows made of:

A monochromatic X-ray beam is:

The velocity of electrons striking the target in an X-ray tube is a function of the:

The uneven distribution of developed grains within the emulsion of a processed X-ray film causes the subjective impression of:

Of the following, the source providing the most penetrating radiation is:

The focal spot in an X-ray tube:

The quantity of radiation which will produce, by means of ionization, one electrostatic unit of electricity in 0.001293 g of dry air is known as:

An X-ray tube with a small focal spot is considered better than one with a large focal spot when it is desired to obtain:

A voltage selector consisting of an iron core transformer with a single winding having a series of taps at various points on the winding is called:

Filters placed between the X-ray tube and specimen tend to reduce scatter radiation undercutting the specimen by

The amount of unsharpness or blurring of a radiograph is:

Images of discontinuities close to the source side of the specimen become less clearly defined as:

The inherent filtration of an X-ray tube is a function of the:

The formula (milliamperes x time) ÷ distance² is:

The load that can be handled by an X-ray tube focal spot is governed by:

In certain cases, it may advantageous to pack lead shot around a specimen. The purpose for doing this is to:

The absorption of radiation by a material varies:

Which of the following X-ray generators would produce the narrowest cone of X-radiation?