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WorksheetsPneumatic Troubleshooting System
Total questions: 32
Worksheet time: 16mins
A(n) ______ is the malfunction you observe in a pneumatic system caused by a fault
A. Cause
B. Remedy
C. Error
D. Symptom
_____ level troubleshooting is the process of determining what failed inside a particular component
A. First
B. System
C. Component
D. Final
to perform an out-of-circuit test, a component can be placed on a _____ to provide a basic circuit to test the component
A. Work cell
B. Test bench
C. Calibration tester
D. Switch board
A complete lockout/tagout program requires that _____ be locked out for servicing or maintenance
A. All power sources
B. All electrical power
C. All pneumatic power
D. All dangerous machines
When performing an electrical lockout/tagout, the last thing the worker should do is _____
A. Put the lock on the disconnect
B. Put the tag on the disconnect
C. Test the locked-out equipment for power
D. Leave the key in the lock for others
A lockout valve is a two-position valve that in its closed position blocks the supply line and _____ downstream air pressure
A. Vents
B. Increases
C. Regulates
D. Maintains
When working around pneumatic equipment you should
A. Wear canvas shoes
B. Keep loose fitting clothing cuffed tight
C. Remove any rings
D. Wear long sleeves
Before removing system pressure, you should always _____
A. Inspect all safety shields
B. Support any overrunning loads
C. Take a pressure reading of the compressor
D. Locate any overheating components
When you first approach a pneumatic system that requires troubleshooting, take the time to _____ the entire system
A. Visually inspect
B. Pressure test
C. Wipe down
D. Manually override
Inserting a pressure gauge into the pneumatic system using a tee creates a test station or _____
A. Tap line
B. Test zone
C. Test point
D. Bypass
Flow rate measurements are taken using special decives like pilot tubes, orifice plates, and ______
A. Test gauges
B. Barometer
C. Rotameters
D. Bourdon tubes
A sludge collector is used in pneumatic system to _____
A. Eliminate all water and contaminants from the system
B. Trap rust, dirt, and other contaminates
C. Lubricate the compressed air
D. To cool the compressed air
If a filyer has a large pressure differential between its inlet and outlet, it means that _____
A. The pressure regulator is defective
B. The filter element is oversized
C. The filter element is dirty
D. The filter element was not installed horizontally
E. All of the above
The first step in troubleshooting a pneumatic system is to _____
A. Look up possible faults
B. Identify the possible causes
C. Identify possible test methods
D. Identify the symptoms
A pressure drop measured across a filter indicates a(n) _____
A. Bad regulator
B. Oversized filter element
C. Improperly mounted element
C. Dirty filter element
A lubricator that is supplying too much oil to the system can be noticed by _____
A. Overheating components
B. Broken or crazed bowls
C. A pinging sound from actuators
D. Oil dripping from the exhaust ports of components
Delayed oil delivery from a lubricator is probably the result of a mis-adjustment or a(n) _____
A. Clogged filtering element
B. Overfilled bowl
C. Partially clogged pick-up tube
D. Incompatible lubricant
What will happen if the vent of a pressure regulator is blocked
A. The pressure downstream will increase
B. There will be increased contamination in the hoses
C. There will be too little lubricant in the hoses
D. There will be too much lubricant in the hoses
A noisy regulator may be caused by _____
A. An oversized regulator
B. An undersized regulator
C. A blocked port
D. Air escaping from the vent port
A pneumatic actuator might have erratic movement if _____
A. The cylinder bore size is large compared to the load
B. Is has excessive lubrication
C. It has a high system pressure compared to the load
D. It has a worn piston seal
A cylinder that drifts may be the result of _____
A. A decreased load
B. An increased load
C. A bent rod
D. Contaminated lines
Rotary actuators have a range of motion of _____ degrees or less
A. 45
B. 90
C. 180
D. 280
The _____ of a rotary actuator contains the inlet and outlet ports
A. Piston
B. Vane
C. Head
D. Body
Which of the following can cause a rotary actuator not to move
A. The shaft is broken
B. The load is too light
C. The rod seal is worn
D. High backpressure across the load
_____ is a symptom of loose fittings on a rotary actuator's ports
A. Slow actuator speed
B. Shaft misalignment
C. External leakage
D. Speed fluctuation
The _____ is used to control the pilot plungers movement in a pilot-operated DCV
A. Piston
B. Tap
C. Solenoid coil
D. Spool
If the pilot on a solenoid operated valve chatters, it is an indication that the _____
A. Air supply is low
B. Main valve is stuck
C. Plunger is bent or stuck
D. Pilot vent is clogged
The _____ can be used to determine if the DCV's spool is stuck or if the solenoid is not working
A. Manual override
B. External pilot
C. Spring offset
D. Electrical wiring
Flow control valves are used to control actuator speed and _____
A. Sequence timing
B. Downstream pressure
C. Outlet bore size
D. Apply force
A decreased in flow through a flow control valve can be caused by _____
A. A worn valve seat
B. A worn poppet
C. A blocked port
D. A broken spring
QEVs boost an actuaters cycle speed by _____
A. Connecting the outlet exhaust to the inlet
B. Always remaining open
C. Restricting the exhaust rate
D. Exhausting directly to atmosphere
Actuator drift is a symptom that a QEV's _____
A. Gasket is improperly sealed
B. Poppet is stuck closed
C. Exhaust port is practically blocked
D. Diaphragm is too rigid
