BE/B Eng Bachelor of Engineering Bachelor of Biomedical Engineering 2

Question 1

Which type of signal processing technique is most commonly used to remove power-line interference (60 Hz noise) from an ECG signal?

Accepted Answer

Notch filter

Answer

A notch (band-stop) filter is designed to attenuate a very narrow frequency band, making it ideal for removing 60 Hz power-line interference while preserving the rest of the ECG signal.

Question 2

In a biomechanical analysis of the knee joint, the medial collateral ligament (MCL) primarily resists which type of force?

Accepted Answer

Valgus (abduction) stress

Answer

The MCL is a ligament on the medial side of the knee and primarily resists valgus stress, which is the outward bending force applied at the knee.

Question 3

Which FDA regulatory pathway is typically used for a Class II medical device that is substantially equivalent to a legally marketed predicate device?

Accepted Answer

510(k) Premarket Notification

Answer

The 510(k) pathway allows a manufacturer to demonstrate that a new Class II device is substantially equivalent to a predicate device already on the market, avoiding the full PMA process.

Question 4

What is the primary role of surfactant in the lungs from a biofluid mechanics perspective?

Accepted Answer

Reducing alveolar surface tension to prevent alveolar collapse

Answer

Pulmonary surfactant reduces surface tension at the air-liquid interface within alveoli, preventing their collapse (atelectasis) during exhalation.

Question 5

In tissue engineering, what is the function of a scaffold?

Accepted Answer

To provide a three-dimensional structure that supports cell attachment and tissue formation

Answer

A scaffold provides a temporary three-dimensional framework that mimics the extracellular matrix, enabling cells to attach, proliferate, and organize into functional tissue.

BE/B Eng Bachelor of Engineering Practice Test

BE/B Eng Bachelor of Engineering Practice Test

BE/B Eng Bachelor of Engineering Bachelor of Biomedical Engineering 2