RT Level 1 :: ASNT/NDT Mock Test Practice Quiz | NDT Radiographic Testing MCQ’s Part-1

Non-Destructive Testing: 50′ Questions for Conduct of Examinations at NDT RT Levels-1

Radiographic Testing Level -1 (RT-1) General Examination Part-1

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RT Level 1 :: NDT Mock Test Practice Quiz MCQ’s Part-1

1.

An effect of scattered radiation is to:

 
 
 
 

2.

Which of the following statements should be true to achieve the highest level of radiographic sharpness (definition)?

 
 
 
 

4.

The intensifying action of lead screens is caused by:

 
 
 
 

5.

Which of the following types of radiation is particulate?

 
 
 
 

6.

The film processing step in which the undeveloped silver bromide is removed from the film emulsion is called:

 
 
 
 

7.

Cobalt-60 is produced by:

 
 
 
 

8.

A densitometer is an instrument that measures:

 
 
 
 

9.

Which one of the following steps is necessary to dissolve the undarkened silver salt crystals in the film emulsion:

 
 
 
 

10.

A silver nitrate spot test might be used to:

 
 
 
 

11.

The silver nitrate spot test can be used to:

 
 
 
 

12.

Which of the following is a function of lead screens?

 
 
 
 

13.

Most of the energy applied to an X-ray tube is converted into:

 
 
 
 

14.

Thicker materials would normally be inspected using:

 
 
 
 

15.

A linear accelerator is used to produce X rays having energy in the range of:

 
 
 
 

16.

A wetting agent is used in film processing to

 
 
 
 

17.

The normal range of steel that is radiographed using Ir-192 is:

18.

One half-value layer of lead for Iridium-192 is approximate:

 
 
 
 

19.

A straight, dark line in the center of the film of a weld cap would probably be:

 
 
 
 

20.

Which of the following is an isotope not artificially produced for industrial use:

 
 
 
 

21.

The focal spot size of an X-ray machine must be known in order to determine:

 
 
 
 

23.

Most scattered radiation which adversely affects the radiographic image quality originates:

 
 
 
 

24.

Which of the following correctly expresses the inverse square law if I1=dose rate nearest source, I2 =dose rate furthest from the source, D1=distance nearest to source and D2=distance furthest from the source:

 
 
 
 

25.

Betatrons are used to produce X rays in what range?

 
 
 
 

26.

A casting flaw which is formed when two masses of molten metal flowing from different directions flow together but fail to fuse is called:

 
 
 
 

27.

Pinhole radiography would be used to:

 
 
 
 

28.

Film intensifying screens are normally used to:

 
 
 
 

29.

An advantage of a gamma-ray source is:

 
 
 
 

30.

What is the minimum age in years at which a person may perform radiography :

 
 
 
 

31.

Radiographic enlargement to distinguish small defects is possible:

 
 
 
 

32.

One half-value layer of lead for Cobalt-60 is approximate:

 
 
 
 

33.

The difference in densities seen on a radiograph due to section changes in an item is:

 
 
 
 

34.

A radiation producing device that emits radiation of one or a few discreet wavelengths is:

 
 
 
 

35.

The penetrating power of an X-ray machine is indicated by:

 
 
 
 

36.

Which type of film would exhibit the coarsest grain?

 
 
 
 

37.

What is the most important factor in determining the archival quality of the radiographic film?

 
 
 
 

39.

Another name for a penetrameter is:

 
 
 
 

40.

Reticulation may be the result of:

 
 
 
 

41.

How is the wavelength of scattered radiation compared to the primary beam?

 
 
 
 

42.

Higher X ray tube voltages result in:

 
 
 
 

43.

For a particular isotope, the gamma radiation intensity is determined by:

 
 
 
 

44.

The main advantage of having a small focal spot on an X-ray tube is:

 
 
 
 

45.

A detrimental effect of fluorescent screens might be:

 
 
 
 

46.

Radiography of tubular sections using a double-wall, double viewing technique is mainly applicable to sections:

 
 
 
 

47.

X rays are produced by:

 
 
 
 

48.

48 Which of the following is the correct formula to use for calculating geometric unsharpness if F=source size, T=specimen thickness, D=source to object distance and Ug =geometric unsharpness:

 
 
 
 

49.

X-ray intensity is a function of :

 
 
 
 

50.

Which of the following is the most common method of packaging film?


Question 1 of 50

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