UT Level 1 :: Quiz Practice for ASNT/NDT Exam | Ultrasonic Testing MCQ’s Part-2

Non-Destructive Testing: Total 125′ Questions for Conduct of Examinations at NDT RT Level-1. (Quiz Part-1 60′ MCQs, Part-2 65′ MCQs.).

Ultrasonic Testing Level -1 (UT) General Examination Part-1

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UT Level 1 :: NDT Mock Test Practice Quiz MCQ’s Part-2

1.

A type of cast iron that has ultrasonic properties similar to steel is:

 
 
 
 

2.

An effective method of testing for air bubbles in a pipe is to:

 
 
 
 

3.

What effect does hardening have on acoustic velocity in steel?

 
 
 
 

4.

The 2 mm wide notch in the IIW block is used to:

 
 
 
 

5.

When contouring an angle beam wedge for a convex surface, an undesirable result of a wedge that is contoured too well might be:

 
 
 
 

6.

Other factors being equal, which of the following transducers would have the greatest beam spread?

 
 
 
 

7.

Which of the following is the least efficient generator of ultrasonic waves:

 
 
 
 

9.

The angle formed by an ultrasonic wave as it enters a medium of different velocity than the one from which it came and a line drawn perpendicular to the interface between the two media is called:

 
 
 
 

10.

Variation in acoustic velocity from one type of steel to another is usually less than:

 
 
 
 

11.

Which of the following may result in a long narrow rod if the beam divergence results in a reflection from a side of the test piece before the sound wave reaches the back surface?

 
 
 
 

12.

Abnormally large grain size in the test material may be indicated by:

 
 
 
 

13.

Attenuation is made up of:

 
 
 
 

14.

One of the most common applications of ultrasonic tests employing shear waves is the:

 
 
 
 

15.

Which of the following conditions would be most likely to cause strong, interfering surface waves?

 
 
 
 

16.

Sound waves with particle displacement transverse to the direction of wave travel are known as:

 
 
 
 

17.

Which of the following is the most durable piezoelectric material?

 
 
 
 

18.

Flaw sizing by the 6 dB drop technique is applicable to:

 
 
 
 

19.

A reason for using a dual element search unit is:

 
 
 
 

20.

Resolution is inversely proportional to:

 
 
 
 

21.

Spurious indications may be caused by which of the following?

 
 
 
 

22.

Most contact testing is performed by which of the following techniques?

 
 
 
 

23.

When a sound beam is an incident on an acoustic interface at some angle other than normal incidence, which of the following occurs?

 
 
 
 

24.

Gas discontinuities are reduced to flat discs or other shapes parallel to the surface by:

 
 
 
 

25.

A divergent sound beam is produced by:

 
 
 
 

26.

Inspection of castings is often impractical because of:

 
 
 
 

27.

An increase in gain of how many decibels corresponds to a 5:1 increase in flaw echo amplitude?

 
 
 
 

29.

Which of the following is the least efficient receiver of ultrasonic Energy?

 
 
 
 

30.

The fundamental frequency of a piezoelectric crystal is primarily a function of:

 
 
 
 

31.

Of the piezoelectric materials listed below, the most efficient sound transmitter is:

 
 
 
 

32.

Which of the following methods are used to produce ultrasonic waves?

 
 
 
 

33.

A 50 percent decrease in echo amplitude is equal to a loss of how many decibels?

 
 
 
 

34.

Which of the following is not an advantage of a focused transducer?

 
 
 
 

35.

A wheel transducer is normally considered:

 
 
 
 

36.

Compared to the echo returned from a smooth reflector, the echo returned from a natural flaw of the same area and orientation is:

 
 
 
 

37.

Acoustic energy propagates in different modes. Which of the following represent a mode?

 
 
 
 

38.

The ultrasonic test method in which finger damping is most effective in locating a discontinuity is:

 
 
 
 

39.

The length of the zone adjacent to a transducer in which fluctuations in sound pressure occur is mostly affected by:

 
 
 
 

40.

Laminations would most likely be encountered in which of the following product forms?

 
 
 
 

41.

A smooth flat discontinuity whose major plane is not perpendicular to the direction of sound propagation may be indicated by:

 
 
 
 

42.

It is possible for a discontinuity smaller than the transducer to produce indications of fluctuating amplitude as the search unit is moved laterally if testing is being performed in the:

 
 
 
 

43.

In which zone does the amplitude of an indication from a given discontinuity diminish exponentially as the distance increases?

 
 
 
 

44.

In general, which of the following materials would have the least ultrasonic attenuation?

 
 
 
 

45.

The velocity of lamb waves depends on:

 
 
 
 

46.

How many decibels of attenuation corresponds to an ultrasonic signal loss of from 100% to 25% on full-screen height?

 
 
 
 

47.

Reflection indications from a weld area being inspected by the angle beam technique may represent:

 
 
 
 

48.

The coated inside surface of the large end of a cathode ray tube which becomes luminous when struck by an electron beam is called:

 
 
 
 

50.

The 50 mm diameter hole in an IIW block is used to:

 
 
 
 

51.

Which of the following frequencies would probably result in the greatest ultrasonic attenuation losses?

 
 
 
 

52.

Waves whose particle displacement is parallel to the direction of propagation are called:

 
 
 
 

53.

A significant limitation of a lower frequency, single element transducer is:

 
 
 
 

54.

A primary purpose of a reference standard is:

 
 
 
 

55.

What type of search unit allows the greatest resolving power with standard ultrasonic testing equipment?

 
 
 
 

56.

The scattering of the rays of an ultrasonic beam due to reflection from a highly irregular surface is called:

 
 
 
 

57.

Which of the following is a disadvantage of immersion test units?

 
 
 
 

58.

An advantage of a dual crystal search unit is that:

 
 
 
 

59.

Which of the following would be considered application(s) of ultrasonic testing?

 
 
 
 

60.

The most important factor required for the proper interpretation of ultrasonic test results is:

 
 
 
 

61.

A focused sound beam is produced by a:

 
 
 
 

62.

In steel, the velocity of sound is greatest in which of the following modes of vibration?

 
 
 
 

63.

The only sound waves which travel in liquids are:

 
 
 
 

64.

The 100 mm radius in an IIW block is used to:

 
 
 
 

65.

To avoid interfering surface waves, low frequencies should only be used on:

 
 
 
 

Question 1 of 65

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