Questions: neumatic DCV Applications Quiz Question 5 of 6 The deceleration method used to slow pneumatic cylinders by switching to a slower flow control speed is 2-speed control with a cam valve Power braking External shock absorbers None of the above; this is not attempted

The answer is the first one: 2-speed control with a cam valve.

Explanation for each option:

1. 2-speed control with a cam valve: This method involves using a cam valve to switch the flow control speed of the pneumatic cylinder, allowing it to decelerate by transitioning to a slower speed. This is a common technique used to control the speed of pneumatic cylinders effectively.

2. Power braking: This term generally refers to a method used in automotive or mechanical systems to apply brakes using power assistance. It is not typically associated with controlling the speed of pneumatic cylinders.

3. External shock absorbers: While external shock absorbers can be used to cushion the impact at the end of a cylinder's stroke, they do not control the speed of the cylinder during its operation.

4. None of the above; this is not attempted: This option is incorrect because the method of decelerating pneumatic cylinders by switching to a slower flow control speed is indeed attempted and is known as 2-speed control with a cam valve.

Summary: The deceleration method used to slow pneumatic cylinders by switching to a slower flow control speed is 2-speed control with a cam valve.