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

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-1

1.

Calculate the refracted shear wave angle in aluminium [VS = 0.31cm/microsec] for an incident longitudinal wave of 53 degrees in Plexiglas [VL = 0.267cm/microsec]

 
 
 
 

2.

When inspecting a long bar with a longitudinal wave from one end, a series of additional echoes are seen immediately after the bottom surface reflection. these are most likely:

 
 
 
 

3.

The most effective liquid ultrasonic couplant (highest acoustic impedance) is:

 
 
 
 

4.

During immersion ultrasonic testing of pipe or tubing, spurious echoes may be caused by:

 
 
 
 

5.

Near-surface resolution can be improved by:

 
 
 
 

6.

Which of the following is an advantage of contact testing over immersion?

 
 
 
 

7.

The purpose of adding a wetting agent to an immersion bath is:

 
 
 
 

8.

When variations are noticed in the front surface reflection, the test piece should be inspected for possible near-surface discontinuities by:

 
 
 
 

9.

What useful purpose may be served by maintaining the grass on the baseline?

 
 
 
 

10.

A typical application for a through-transmission technique is:

 
 
 
 

11.

One of the most apparent characteristics of a discontinuity echo, as opposed to a non relevant indication, is:

 
 
 
 

12.

An ultrasonic data display that shows a plan view presentation of the data is called:

 
 
 
 

13.

A wider entry surface indication or pulse may result from:

 
 
 
 

14.

Which of the following is intended to be a ‘first cut’ or rough inspection device to be followed by a more precise evaluation of any discontinuities found?

 
 
 
 

15.

Polished, flat surfaces are undesirable for ultrasonic testing consideration because:

 
 
 
 

16.

An advantage of using lower frequencies during ultrasonic testing is that:

 
 
 
 

17.

For a transducer with any given Q, resolution increases with:

 
 
 
 

18.

The excessive ringing of the transducer could be caused by:

 
 
 
 

19.

When testing a test piece with parallel front and back surfaces, no back wall echo can be obtained. Which of the following actions might enable you to obtain a back wall echo?

 
 
 
 

20.

The resolving power of a transducer is directly proportional to its:

 
 
 
 

21.

Most commercial ultrasonic testing is performed at frequencies between:

 
 
 
 

22.

An ultrasonic display that shows echo locations and amplitude is called:

 
 
 
 

23.

Strong signals which travel across the horizontal time base of an A-scan presentation while the transducer is motionless on the test piece are probably:

 
 
 
 

24.

Typical frequencies which might be used to perform ultrasonic testing of concrete are:

 
 
 
 

25.

An advantage of immersion testing is that:

 
 
 
 

26.

Which of the following is an advantage of a focused transducer?

 
 
 
 

27.

Typical frequencies which might be used to perform ultrasonic testing of ferrous and non-ferrous welds are:

 
 
 
 

28.

When comparing discontinuity echoes to equivalent flat bottom hole echoes in materials with similar impedance, surface finish, and attenuation:

 
 
 
 

29.

During immersion testing of pipe or tubing, the incident longitudinal wave angle must be limited to a narrow range. The reason for the upper limit is:

 
 
 
 

30.

Which of the following product forms would probably be tested at the lowest frequency?

 
 
 
 

31.

For an ultrasonic beam with normal incidence, the transmission coefficient is given by:

 
 
 
 

32.

Which of the following cast materials could most likely be successfully ultrasonically tested?

 
 
 
 

33.

An advantage of immersion testing is that:

 
 
 
 

34.

When a probe is coupled to a solid, strong surface wave may be produced:

 
 
 
 

35.

The addition of approximately 6% antimony as an alloying element could be expected to increase the ultrasonic inspectability of which of the following materials?

 
 
 
 

36.

The most important requirement for a paintbrush transducer is:

 
 
 
 

37.

Calculate the refracted shear wave angle in steel [VS = 0.323cm/microsec] for an incident longitudinal wave of 45.7 degrees in Plexiglas [VL = 0.267cm/microsec]

 
 
 
 

38.

The particle motion for compression waves is:

 
 
 
 

39.

Which of the following describes the sound field propagating in a piece of a steel bar stock which is being tested from one end with longitudinal waves?

 
 
 
 

40.

Materials that can readily be inspected with frequencies of 1 to 5 MHz are:

 
 
 
 

41.

A calibration for immersion ultrasonic testing of pipe or tubing should establish a transducer position such as:

 
 
 
 

42.

A method of compensating for the ‘dead zone’ or near-surface resolution problems is to:

 
 
 
 

43.

When using a straight beam technique to examine a thick test piece what change(s) would you expect to see in back wall echo size as you approach the side of the test piece? (Transducer remains completely on test piece)

 
 
 
 

44.

Forging bursts are most often orientated:

 
 
 
 

45.

Snell’s law is given by which of the following:

 
 
 
 

46.

The term is used to refer to the product of wave velocity and density is:

 
 
 
 

47.

For an ultrasonic beam with normal incidence, the reflection coefficient is given by:

 
 
 
 

48.

Calculate the refracted shear wave angle in aluminium [VS = 0.31cm/microsec] for an incident longitudinal wave of 43.5 degrees in Plexiglas [VL = 0.267cm/microsec]

 
 
 
 

49.

Snell’s law is used to calculate:

 
 
 
 

50.

An ultrasonic display that shows a cross-section of the test piece and any flaws which are found are called:

 
 
 
 

51.

Which of the following methods might be used to reduce attenuation losses in an ultrasonic test?

 
 
 
 

52.

Which of the following materials would probably require testing at the lowest frequency?

 
 
 
 

53.

Typical immersion test frequencies for wrought aluminum are:

 
 
 
 

54.

Which of the following is a disadvantage of contact testing?

 
 
 
 

55.

Lithium sulfate, barium titanate and lead meta niobate are examples of:

 
 
 
 

56.

Shear waves for ultrasonic testing are usually produced:

 
 
 
 

57.

Choice of ultrasonic test frequency depends upon which of the following?

 
 
 
 

58.

Calculate the refracted shear wave angle in steel [VS = 0.323cm/microsec] for an incident longitudinal wave of 37.9 degrees in Plexiglas [VL = 0.267cm/microsec]

 
 
 
 

59.

An ultrasonic technique in which two transducers are used, in a constant position relative to each other, is:

 
 
 
 

60.

One way of identifying spurious echoes in an ultrasonic test is:

 
 
 
 

Question 1 of 60

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