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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Also Read:  IRT Level 1 :: Infrared Thermography Testing MCQ's Part-1| Quiz Practice for ASNT/NDT Exam Questions

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

1.

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

 
 
 
 

2.

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

 
 
 
 

3.

A type of neutron beam collimator is a:

 
 
 
 

4.

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:

 
 
 
 

6.

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

 
 
 
 

7.

High-resolution gadolinium conversion screens are produced by:

 
 
 
 

8.

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

 
 
 
 

9.

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

 
 
 
 

10.

What has the highest thermal neutron absorption cross section?

 
 
 
 

11.

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

 
 
 
 

12.

Neutron converter screens should be inspected for flaws or dirt:

 
 
 
 

13.

Neutron exposure may be due to:

 
 
 
 

14.

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

 
 
 
 

15.

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

 
 
 
 

17.

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

 
 
 
 

18.

Radiographic contrast in a neutron radiograph is least affected by:

 
 
 
 

19.

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

 
 
 
 

20.

Which elements are commonly used in the indirect transfer method?

 
 
 
 

21.

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

 
 
 
 

22.

The sharpness of the outline in the image of the radiograph is a measure of:

 
 
 
 

23.

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

 
 
 
 

24.

A curie is an equivalent of:

 
 
 
 

25.

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

 
 
 
 

26.

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

 
 
 
 

27.

The three main steps in processing a radiograph are:

 
 
 
 

28.

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

 
 
 
 

29.

Dysprosium conversion screens emit:

 
 
 
 

30.

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?

 
 
 
 

31.

Neutron beams used in nondestructive testing normally contain:

 
 
 
 

32.

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

 
 
 
 

33.

Hydrogenous material has a :

 
 
 
 

34.

In neutron radiography, L/D refers to the:

 
 
 
 

35.

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

 
 
 
 

36.

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

 
 
 
 

37.

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

 
 
 
 

38.

Materials that are exposed to thermal neutron beams:

 
 
 
 

39.

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:

 
 
 
 

40.

Conversion screens are used in neutron radiography:

 
 
 
 

41.

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

 
 
 
 

42.

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

 
 
 
 

43.

The highest quality direct neutron radiographs obtainable today use:

 
 
 
 

44.

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

 
 
 
 

45.

The best high-intensity source of thermal neutrons is:

 
 
 
 

46.

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

 
 
 
 

47.

An Image Quality Indicator is used to measure the:

 
 
 
 

48.

Neutron penetration is greatest in which of the following materials?

 
 
 
 

49.

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

 
 
 
 

50.

In order to increase the neutron beam intensity:

 
 
 
 

51.

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

 
 
 
 

52.

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

 
 
 
 

53.

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

 
 
 
 

54.

Commonly used converter screens are:

 
 
 
 

55.

Gadolinium conversion screens are usually mounted in rigid holders called:

 
 
 
 

56.

In order to decrease geometric unsharpness:

 
 
 
 

57.

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

 
 
 
 

58.

A densitometer is:

 
 
 
 

59.

Gadolinium conversion screens emit:

 
 
 
 

60.

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

 
 
 
 

Question 1 of 60

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