F.P.

Front

What is necessary to use a vacuum cup to lift a porous material, like a corrugated sheet, for stacking?

Back

A cup with a very thin flexible lip

Answer explanation

A cup with a very thin flexible lip is necessary to conform to the irregularities of a porous material like a corrugated sheet, ensuring a proper seal for effective lifting. This design allows for better suction and grip.

Front

To determine why a Venturi vacuum isn't working properly, you should check: The minimum required psi and cfm at the input

Back

The minimum required psi and cfm at the input

Answer explanation

The correct choice is to check the minimum required psi and cfm at the input, as insufficient pressure or flow can directly affect the performance of a Venturi vacuum.

Front

A space with absolute pressure less than one atmosphere may be considered _________.

Back

a partial vacuum

Answer explanation

A space with absolute pressure less than one atmosphere indicates that it has lower pressure than the surrounding atmosphere, which is characteristic of a partial vacuum. Thus, the correct answer is 'a partial vacuum'.

Front

Shortly after you replace the actuator, it fails again. What's the likely cause of this problem? Options: Failed pressure regulating valve, Failed quick exhaust valve, The trap is empty, Overfilled accumulator

Back

Failed pressure regulating valve

Answer explanation

The actuator's repeated failure likely indicates a failed pressure regulating valve, which can cause improper pressure levels, leading to actuator malfunction. Other options do not directly relate to actuator failure.

Front

Which of the following is NOT a probable cause of low system air pressure?
Pipe rust and scale particles, Compression oil in cylinders, Worn seals from no lubrication

Back

Side load mounting forces

Answer explanation

Side load mounting forces do not directly affect system air pressure, unlike the other options which can lead to pressure loss due to physical degradation or contamination.

Front

Which one is NOT a good troubleshooting method? Options: System compressor to actuator, From the actuator back to the compressor, Part replacement based on maintenance history log, Shotgun technique part replacement

Back

Shotgun technique part replacement

Answer explanation

The shotgun technique part replacement is not a good troubleshooting method because it involves replacing multiple parts without proper diagnosis, which can lead to unnecessary costs and may not resolve the actual issue.

Front

Which indicates to a control system that a vacuum system has reached the setpoint? Options: Vacuum generator, Analog vacuum gauge, Vacuum switch, Vacuum relief valve

Back

Vacuum switch

Answer explanation

A vacuum switch indicates when the vacuum system has reached the setpoint by closing or opening a circuit based on the vacuum level, making it the correct choice. Other options do not provide this direct indication.

Front

A decent fluid power troubleshooting flow chart will aid the technician by:

Back

progressively narrowing down the range of probably causes

Answer explanation

A decent fluid power troubleshooting flow chart helps by progressively narrowing down the range of probable causes, allowing technicians to focus on the most likely issues rather than considering all possible causes at once.

Front

A troubleshooting tool that asks a series of questions requiring a 'yes' or 'no' answer is a:

Back

flow chart

Answer explanation

A flow chart is a troubleshooting tool that uses a series of questions with 'yes' or 'no' answers to guide users through a process, making it the correct choice compared to the other options.

Front

Which of the following describes when the test valve would be opened when taking a pressure measurement at a built-in test fitting?
After attaching the measuring device,
Before attaching the measuring device,
Before taking samples on negative pressure systems,
After quick bleeding of cylinders on high pressure systems

Back

After attaching the measuring device

Answer explanation

The test valve should be opened after attaching the measuring device to ensure accurate pressure readings. Opening it beforehand could lead to incorrect measurements or system exposure.