CEU Quiz

Certified Professionals may earn .2 CEUs by completing quizzes based on selected articles in each issue of Assistive Technology®. Each quiz is in a multiple-choice format. You must select the correct answer for 75% of the questions to earn the .2 CEU credit. Results of the quiz will be emailed (or mailed by request) upon completion. Complete the quiz by circling the correct answers. Mail, scan or fax the completed quiz with payment to: RESNA Quizzes, 1700 N. Moore St., Suite 1540, Arlington, VA 22209. FAX: [phone] or [email protected].

Fee $28 Member $40 Non-Member

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Other quizzes from Assistive Technology® articles may be found on the RESNA website (www.RESNA.org). The primary program learning objective is to keep abreast of current findings and practices in assistive technology, research and rehabilitative engineering.

□YES □NO Was the content of the article relevant to current AT practice?

□YES □NO Was reading the article and completing the quiz a good way for you to learn?

1. What are the major factors influencing propulsion effort?

   1. resistance and caloric expenditure

   2. momentum and traction

   3. inertia and frictional energy losses

   4. force and inertia

2. What was the goal of biomechanics researchers when studying propulsion?

   1. decreasing friction

   2. increasing efficiency

   3. decreasing torque

   4. increasing torque

3. What effect did axle position have while propelling on tile?

   1. no effect

   2. a small effect

   3. a significant effect

   4. a minor effect initially and then a significant effect

4. How do wheelchair users perform propulsion work?

   1. by harnessing kinetic energy and channeling it toward the handrim

   2. by channeling torque to the handrims through the drive wheels

   3. by converting mechanical energy to kinetic energy in the drive wheels

   4. by applying torque to the drive wheels through the handrims

5. What reflects the resistance to any change in velocity?

   1. torque

   2. resistance

   3. friction

   4. inertia

6. What are the three types of inertia used for maneuvering a wheelchair?

   1. transactional, turning, rotational

   2. rotational, turning, translational

   3. revolving, rotating, transformational

   4. translational, turning, revolving

7. What is the ever-present resistive energy loss during wheelchair movement?

   1. resistence

   2. inertia

   3. friction

   4. energy

8. An effect size of 1.0 indicates that the mean torque of the tested wheelchair is at the ______________ percentile of the 12kg&70% wheelchair, and an effect size of 2.0 indicates that the tested wheelchair is at the ________________ percentile of the base ULW wheelchair configuration.

   1. 74^th … 93^rd

   2. 95^th … 87^th

   3. 84^th … 97.7^th

   4. 97.7^th … 82^nd

9. What is the term used to denote the combined drive wheel torques?

   1. the inversion torque

   2. the propulsion torque

   3. the resistance torque

   4. the acceleration torque

10. What type of influences did mass and weight distribution have while turning on carpet during both the acceleration and steady-state phases?

    1. vastly different

    2. nearly equal

    3. exactly the same

    4. none whatsoever

11. When is drive wheel scrub greater?

    1. during turning when 70% of weight is placed upon the drive wheels

    2. during deceleration when 40% of weight is placed upon the drive wheels

    3. during acceleration when 75% of weight is placed upon the drive wheels

    4. during steady-state velocity when 60% of weight is placed upon the drive wheels

12. When did the greatest torque differences exist?

    1. during the steady-state phases of both trajectories

    2. during the turning acceleration state of both trajectories

    3. during the straight steady-state of one trajectory

    4. during the turning steady-state of one trajectory