1.

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

2.

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:

3.

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

4.

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

5.

An advantage of immersion testing is that:

6.

Snell’s law is used to calculate:

7.

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

8.

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]

9.

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

10.

Shear waves for ultrasonic testing are usually produced:

11.

Which of the following is a disadvantage of contact testing?

12.

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

13.

A wider entry surface indication or pulse may result from:

14.

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

15.

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

16.

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

17.

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

18.

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

19.

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

20.

The particle motion for compression waves is:

21.

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

22.

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

23.

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

24.

The excessive ringing of the transducer could be caused by:

25.

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

26.

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?

27.

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

28.

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

29.

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)

30.

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

31.

An advantage of immersion testing is that:

32.

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

33.

Most commercial ultrasonic testing is performed at frequencies between:

34.

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

35.

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

36.

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?

37.

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]

38.

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

39.

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

40.

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

41.

Forging bursts are most often orientated:

42.

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

43.

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?

44.

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

45.

Typical immersion test frequencies for wrought aluminum are:

46.

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

47.

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]

48.

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

49.

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

50.

Near-surface resolution can be improved by:

51.

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

52.

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:

53.

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

54.

A typical application for a through-transmission technique is:

55.

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

56.

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

57.

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

58.

The most important requirement for a paintbrush transducer is:

59.

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:

60.

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]