Quiz on Chapter 17

1. Air-oil systems use_______for power and_______as the controlling medium.

  1. oil, air
  2. water, oil
  3. air, oil

2. Attached oil control units can control cylinder action:

  1. both ways
  2. on extension only
  3. on retraction only

3. Large-diameter air-oil tanks:

  1. increase pressure at the outlet
  2. decrease pressure at the outlet
  3. have no effect on pressure at the outlet

4. You should size oil-flow lines in an air-oil circuit for:

  1. 2 to 4 fps velocity
  2. 4 to 8 fps velocity
  3. 10 to 15 fps velocity

5. Tandem cylinders can be used in:

  1. synchronizing circuits
  2. circuits that require mid-stroke stopping
  3. two-speed circuits
  4. all of the above

6. The oil output volume from an air-to-oil intensifier is equal to:

  1. air input volume
  2. a large portion of air input volume
  3. a small portion of air input volume

7. Output pressure from an air-to-oil intensifier is controlled by.

  1. the area ratio of the pistons and/or rams involved
  2. the length of stroke
  3. the size of the outlet port

8. Air-to-air intensifiers:

  1. run continuously, regardless of output pressure
  2. stall when output pressure on the intensifier piston reaches input pressure
  3. stall when output pressure on the intensifier piston tries to go higher than input pressure times area ratio

9. Air-to-air intensifiers are good for:

  1. high volumes of air at increased pressure
  2. medium volumes of air at increased pressure
  3. low volumes of air at increased pressure

10. This symbol represents:
  1. a double-rod cylinder
  2. an intensifier
  3. a hi-lo pump