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Some examples from this set of practice questions
1.
__________ cannot travel through a vacuum.
Answer: sound cannot travel in a vaccum
2.
______________ is the time from the start of a pulse to the start of the next pulse.
Answer: pulse repetition period (PRP)
3.
1540 can be expressed in scientific notation as..
Answer: 1.54 x 10 ^3
4.
linear format will produce what image shape on the display?
Answer: rectangle image shape
5.
All of the following are acoustic variables, except for.. pressure density power particle motion
Answer: power is not an acoustic variable
6.
attenuation drop of 6 decibels corresponds to an intensity reduction of ______ its original value.
Answer: 1/4
7.
can Duty Factor be changed by the sonographer?
Answer: yes, it can be changed indirectly by adjusting the imaging depth
8.
frequency is..
Answer: number of cycles per second
9.
frequency increases, what happens to wavelength?
Answer: it decreases. (they are indirectly proprtional)
10.
if frequency is 1 MHz, what is the period?
Answer: 1 microsecond
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