Basic Pneumatic Systems 2

Cam-operated pneumatic valves are designed to function like _____

• A. Two-position DCVs

• B. Electrical limit switches

• C. Roller-operated brakes

• D. Mechanical logic gates

Roller-plunger type cam valves are available in 2, 3, and 5-ported designs with _____ positions

• A. Four

• B. Three

• C. Two

• D. Zero

Cam-operated valves are commonly used in 2-speed circuits such as the _____ circuits

• A. Forward stroke-reverse bleed

• B. Backpressure cylinder drive

• C. Rapid traverse-slow feed

• D. Variable meter-off

_____ are internal shock absorbers that absorb the impact of an actuator's rod to slow it down

• A. Power brakes

• B. Air cams

• C. Cylinder struts

• D. Cushions

Two-way valves control flow rate in either direction by functioning as _____ valves

• A. On-off

• B. Directional control

• C. Bi-directional

• D. Flow control

_____ are used in general piping and process control systems since they require many turns to fully open to close

• A. Plug valves

• B. Gate valves

• C. Ball valves

• D. Butterfly valves

Externally air-piloted DCVs use _____ to actuate

• A. Remote air pressure

• B. Electrical solenoids

• C. Manual overrides

• D. Automatic operators

A(n) _____ is a mechanical notch or grip in a DCV spool that holds it in place once power is removed

• A. Indention

• B. Catch

• C. Bar

• D. Detent

A _____ spool designs on a pneumatic DCV has no seals between the spools and the bore

• A. Packed

• B. Lapped

• C. Packed bore

• D. Grooved

A location where you might find air logic is in _____

• A. An automobile factory

• B. A paper mill

• C. An oil refinery

• D. An appliance assembly plant