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Active Grasp Mechanisms Quiz

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Questions and Answers

What characterizes a voluntary-opening mechanism?

It is typically the lightest type of grasp device.

It operates similarly to a battery-powered device.

It remains open by default and closes with a pull.

It is held closed at rest and opens when the control cable is pulled. (correct)

Which statement about voluntary-closing mechanisms is true?

They require continuous power to function.

They usually tend to be heavier and less durable than their counterparts. (correct)

They are designed to be held open at rest.

They are generally lighter than voluntary-opening mechanisms.

Which of the following features distinguishes voluntary-opening mechanisms from voluntary-closing ones?

Voluntary-opening mechanisms open through a cable pull. (correct)

Voluntary-opening mechanisms can operate underwater.

Voluntary-opening mechanisms are actuated by battery power.

Voluntary-opening mechanisms are typically heavier.

In comparison to voluntary-closing mechanisms, voluntary-opening mechanisms are generally:

<p>More efficient and require less force to operate. (C)</p> Signup and view all the answers

Which of the following statements correctly contrasts both types of mechanisms?

<p>Voluntary-opening mechanisms are durable due to their spring mechanism, while voluntary-closing mechanisms are typically less durable. (A)</p> Signup and view all the answers

Study Notes

Active or Prehensors

Active grasp mechanisms can exhibit two distinct operational types based on how they function: voluntary-opening and voluntary-closing.

Voluntary-Opening

Typically remains in a closed position at rest due to a spring or rubber band mechanism.
Activation occurs when a control cable is pulled, resulting in the device opening.

Voluntary-Closing

Functions oppositely, operating by closing when activated.
Generally heavier and less durable compared to voluntary-opening mechanisms.

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Description

Explore the various types of active grasp mechanisms used in prosthetics through this quiz. Understand the differences between voluntary-opening and voluntary-closing devices. Test your knowledge on their functions, durability, and operational mechanics.