Free Exam: PHYSICS: Chap 9: Sound Beams - Practice Quiz
Number of Questions in Test: 32
Number of Questions in Preview: 5
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[cmimg]0/7499281_VPDBXOL9.png[/cmimg]
The near field depth of a 5 mm diameter crystal operating at 5 MHz is:
The near field depth of a 5 mm diameter crystal operating at 5 MHz is:
| Type: | Multiple choice |
| Points: | 1 |
| Randomize answers: | Yes |
Question 2
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What is the angle of the far field divergence for a 5 MHz transducer with a crystal diameter of 5 mm?
What is the angle of the far field divergence for a 5 MHz transducer with a crystal diameter of 5 mm?
| Type: | Multiple choice |
| Points: | 1 |
| Randomize answers: | Yes |
Question 3
A reduction in the beam diameter in the near zone may be accomplished by:
| Type: | Multiple choice |
| Points: | 1 |
| Randomize answers: | Yes |
Question 4
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Focusing:
Focusing:
| Type: | Multiple choice |
| Points: | 1 |
| Randomize answers: | No |
Question 5
The two basic methods of focusing are:
| Type: | Multiple choice |
| Points: | 1 |
| Randomize answers: | No |