NR Level 1 :: Neutron Radiographic Testing MCQ’s Part-2 | Quiz Practice for ASNT/NDT Exam Questions

Non-Destructive Testing: Total 120′ Questions for Conduct of Examinations at NDT NR Level-1. (Quiz Part-1 60′ Part-2 60′.).

Neutron Radiographic Level -1 (NR) General Examination Part-2

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NR Level 1 ASNT / NDT Test 2. This is a quiz over the various topics covered throughout the Neutron Radiographic Testing Level 1 section to test your understanding. Click “below button ‘or ‘Scroll down” to start your test.

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NR Level 1 :: NDT Neutron Radiographic MCQ’s Part-2

1.

Radiographic contrast in a neutron radiograph is least affected by:

 
 
 
 

2.

When doing neutron radiography on radioactive materials, the materials are best handled:

 
 
 
 

3.

Movement, geometry, and screen contact are three factors that affect radiographic:

 
 
 
 

4.

An Image Quality Indicator is used to measure the:

 
 
 
 

5.

Conversion screens are used in neutron radiography:

 
 
 
 

6.

A densitometer is:

 
 
 
 

8.

As a check on the adequacy of the neutron radiographic technique, it is customary to place a standard test piece on the source side of the cassette. This standard test piece is called:

 
 
 
 

9.

Which elements are commonly used in the indirect transfer method?

 
 
 
 

10.

In order to increase the neutron beam intensity:

 
 
 
 

11.

Hydrogenous material has a :

 
 
 
 

12.

Possible reactions that can occur when a fast neutron strikes a nucleus are:

 
 
 
 

13.

The neutron cross section is the term normally used to denote:

 
 
 
 

14.

Gadolinium conversion screens emit:

 
 
 
 

15.

The mass absorption coefficients for thermal neutrons when plotted against regularly increasing atomic numbers of periodic elements present a:

 
 
 
 

16.

The ability to detect a small discontinuity or flaw is called:

 
 
 
 

17.

Radiographic sensitivity, in the context of defining the minimum detectable flaw, depends on:

 
 
 
 

18.

Neutron exposure may be due to:

 
 
 
 

19.

In order to decrease geometric unsharpness:

 
 
 
 

20.

Neutron penetration is greatest in which of the following materials?

 
 
 
 

21.

Materials in common usage for moderation of fast neutron sources include:

 
 
 
 

22.

The time required for one-half of the atoms in a particular sample of radioactive material to disintegrate is called:

 
 
 
 

23.

A photographic record produced by the passage of neutrons through a specimen onto a film is called:

 
 
 
 

24.

The selection of the proper type of film to be used for neutron radiographic examination of a particular part depends on the:

 
 
 
 

26.

Converter screen material characterized by lithium, boron, and gadolinium has little tendency to become radioactive but does:

 
 
 
 

27.

The highest quality direct neutron radiographs obtainable today use:

 
 
 
 

28.

A curie is an equivalent of:

 
 
 
 

29.

Neutron converter screens should be inspected for flaws or dirt:

 
 
 
 

30.

When radiographing a part that contains a large crack, the crack will appear on the radiograph as:

 
 
 
 

31.

In the converter screen technique, the neutron image is produced by alpha, beta, or gamma radiation and it is thereby:

 
 
 
 

32.

The difference between the densities of two areas of a radiographic film is called:

 
 
 
 

33.

Which of the following materials is best for making identification labels when using the neutron radiographic process?

 
 
 
 

34.

The accidental movement of the specimen or film during exposure or the use of a source-film that is too small will:

 
 
 
 

35.

Many of the absorption differences between neutrons and X-rays indicate clearly that the two techniques:

 
 
 
 

36.

Unwanted inclusions in a part will appear on a radiograph as:

 
 
 
 

37.

The main reason for using neutron radiography in place of X-radiography is:

 
 
 
 

38.

A type of neutron beam collimator is a:

 
 
 
 

39.

Gadolinium is frequently employed as a neutron absorber because of its:

 
 
 
 

40.

Commonly used converter screens are:

 
 
 
 

41.

A sheet of cadmium with an opening cut in the shape of the part to be radiographed may be used to decrease the effect of scattered neutrons, which undercuts the specimens. Such a device is called a:

 
 
 
 

42.

In general, by increasing the neutron energy from a neutron radiographic source:

 
 
 
 

43.

The penetrating ability of a thermal neutron beam is governed by:

 
 
 
 

45.

Higher resolution can be achieved in direct neutron radiography by:

 
 
 
 

46.

Neutron beams used in nondestructive testing normally contain:

 
 
 
 

47.

Materials that are exposed to thermal neutron beams:

 
 
 
 

48.

Gadolinium conversion screens are usually mounted in rigid holders called:

 
 
 
 

49.

The three main steps in processing a radiograph are:

 
 
 
 

50.

Dysprosium conversion screens emit:

 
 
 
 

51.

The best high-intensity source of thermal neutrons is:

 
 
 
 

52.

The primary advantage of using a Cf-252 source for neutron radiography is its:

 
 
 
 

53.

High-resolution gadolinium conversion screens are produced by:

 
 
 
 

54.

Scattered radiation caused by any material, such as a wall or floor, on the film side of the specimen, is referred to as:

 
 
 
 

55.

The best material for mounting specimens for neutron radiographic inspection is:

 
 
 
 

56.

An excellent radiograph is obtained under given exposure conditions with a thermal neutron flux of 2 x 10% n/cm2-s for 10 minutes. If other conditions are not changed, what exposure time would be required if the neutron flux was lowered to 1 x 106 n/cm2-s?

 
 
 
 

57.

Generally, the attenuation of neutrons by a given material is:

 
 
 
 

58.

For inspection of radioactive objects or those that emit gamma radiation when bombarded with neutrons, a preferable detection method is the:

 
 
 
 

59.

Short wavelength electromagnetic radiation produced during the disintegration of nuclei of radioactive substances is called:

 
 
 
 

60.

A graph showing the relationship between film optical density and exposure is called:

 
 
 
 

Question 1 of 60

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