True/False. Determine whether each of the following statements is true or false

Question

True/False. Determine whether each of the following statements is true or false based on
the course materials. Please provide explanations to your answers.
a. In a hospital, among infusion pump, incubator, and pulse oximeter, a cell phone
would most affect the incubator.
b. Autocoorelation involves the shifting of the signals.
c. A DC offset can be identified since it is similar to a 60Hz noise.
d. Ultrasound velocity in bone is more than in the brain
e. As far as acoustics are concerned, soft tissue behaves as a liquid.

Explanation / Answer

1.

The most affected device due to a cell phone in the vicinity would be an infusion pump. Cell phones emit electromagnetic rediation and infusion pumps have shown vulnerability to electromagnetic radiation due to cell phones. Due to involvement of digital circuits and motor, infusion pumps get affected by electromagnetic interferece more often than not. Hence the statement is FALSE.

2.

Autocorelation is a measure of similarity of a given function with itself when shifted by some amount. In other words, Autocorelation involves averaging of the product of of the time signal and time shifted version of the same sjgnal. Therefore it involves shifting of signals. So the statement is TRUE.

As per answering guidelines we are supposed to answer only one question at once. Then also i have answered the first two questions completely with explanation. Please repost the other questions separately to get their solution.

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