Measurement and Instrumentation Quiz

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Questions and Answers

Which of the following is the correct definition of a sensor?

A device that transmits energy from one system to another

A device that measures electrical signals and quantities

An element of a measurement device that is affected by the measured quantity

A device that detects a change in a physical quantity and expresses it as a signal (correct)

Which of the following is an example of a non-electrical quantity that can be measured using a sensor?

Temperature (correct)

Resistance

Voltage

Current

What is the purpose of a transducer?

To convert electrical energy into mechanical energy

To detect a change in a physical quantity and express it as a signal

To measure electrical signals and quantities

To transmit energy from one system to another (correct)

Which of the following is an example of a transducer?

Pressure sensor Signup and view all the answers

What is the SI system used for in measurements?

To ensure accuracy and consistency in measurements Signup and view all the answers

Which of the following is the correct translation of 'Système international d'unités' in English?

International System of Units Signup and view all the answers

What is the main purpose of traceability in the International System of Units?

To ensure the accuracy and consistency of measurements Signup and view all the answers

What is the topic of Lecture 3 in the International System of Units?

Realization of the units Signup and view all the answers

Which of the following examples is mentioned in the text as an application of the International System of Units?

Humidity Meter Signup and view all the answers

What was the significance of the 1st electrocardiograph created in 1903?

Enabled measurement of electrical changes during heartbeats Signup and view all the answers

What technology allowed for the visualization of small cells in the 1950s?

Electron microscope Signup and view all the answers

Which technique was developed post-WWII to study the electrical behavior of the central nervous system?

Electrocardiograph Signup and view all the answers

When did the concept of artificial organs gain acceptance?

1970s Signup and view all the answers

Which medical imaging technique was first developed in the 1970s?

Computerized tomography (CT) Signup and view all the answers

What is a key feature of PET scanners in detecting tumors?

Use of positron-emission tomography Signup and view all the answers

Which field developed post-WWII and focused on rehabilitation engineering?

Prosthetics Signup and view all the answers

'Artificial organs' concept gaining acceptance was a milestone after which medical breakthrough?

'1st successful kidney transplant' Signup and view all the answers

What technology allowed for surgery using robotics in the 21st century?

Computerized tomography (CT) Signup and view all the answers

Study Notes

Advances in Biomedical Engineering

Prosthetic devices are increasingly sophisticated; they can be internal or external, aiming to replace lost functions of the neuro-skeletomotor system.
Tissue engineering focuses on creating biological tissue or aiding in the repair and growth of existing tissues.
Stem cell research is pivotal for potentially replacing and regenerating damaged tissues within the body.

Recent Advances in Prosthetics

Orthopedic Prosthetics include artificial limbs designed to replace human body parts but face challenges in mimicking natural movement.
The C-Leg is a notable example of an advanced orthopedic prosthetic, notably used by Paralympic sprinter Oscar Pistorius.
Designing for functionality, rather than direct human mimicry, often proves more effective in prosthetic development.

Neural Prosthetics

Neural Prosthetics such as the Luke Arm, developed by Dean Kamen, utilize myoelectric signals for operation and are in clinical trial phases.
These devices can be powered by the human body through electrical signals from external sources or their own power supply.
Achieving smooth motion in neural prosthetics requires stimulation via electrodes to meet a threshold frequency, especially complex for upper extremities due to fine motor control needs.

Challenges in Prosthetic Development

The intricate strength and flexibility required for complex hand functions create significant challenges for recreating natural hand movements.
Lower limbs typically involve simpler joint functions, making prosthetic development less complicated compared to upper limb prosthetics.

Innovations in Tissue Engineering

Tissue engineering includes manufacturing biological tissues outside (ex vivo) or inside (in vivo) the body to facilitate repair and growth.
Bio-artificial tissues serve as alternatives to organ transplants and assist in studying tissue behavior under laboratory conditions.
Improved control over cell organization and regeneration enhances the potential applications of bio-artificial tissues, including joint replacements and liver cancer treatment.

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Description

Test your knowledge on measurement and instrumentation with this quiz! Covering topics such as sensors, SI-system, uncertainty in measurements, electrical and non-electrical quantities, and more. Perfect for ELEG 323 students.