Welcome to our Online Hydraulics Quiz.  The quiz below should be administered to all maintenance personnel responsible for hydraulic equipment. A score of less than 70% is a strong indication that  GPM's  Basic Hydraulic Troubleshooting workshop should be attended prior to our Machine-Specific Hydraulic Troubleshooting workshop to reap significant savings in unnecessary parts changing and plant downtime.

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1. Pascal’s law states that pressure in a confined body of fluid will act_______________in all directions.
2. Pressure in a hydraulic system is generated by ___________ to flow.
3. Force = __________ x ____________
4. Most of the energy not used to move the load in a hydraulic system turns into____________.
5. The relief valve is a normally closed valve. The term “closed” means that in the power off condition the valve is:
6. When the compensator setting of a pressure compensating hydraulic pump is reached the pump volume will:
7. What is the number one reason why pumps cavitate?
8. What five characteristics does the valve below have?

9. Which valve center position would be best to use with a fixed displacement pump?

A               B               C
10. Which of the valve actuators indicates a larger valve?

                                     B
11. The pressure reducing valve shown below is:

12. What type gas should normally be used to charge an accumulator?
13. In precharging an accumulator used for volume, if there are no designer recommendations a good setting for most systems is
14. When using a hydraulic accumulator for volume and the accumulator is operating properly, heat should be felt:
15. When using an accumulator for shock it should be:
16. The symbol shown below indicates:

17. A purpose of the crossport relief valve in a hydraulic motor circuit is to:
18. Servo and proportional valves operate from a:
19. A servo valve should be nulled:
20. The purpose of a Temposonic transducer is:
21. When a problem exists with a linear positioner circuit, the first thing you would do is to:
22. What is the most reliable indication of a faulty variable displacement hydraulic pump?
23. What determines the speed of a hydraulic cylinder or a motor?
24. Which of the following applications would require a non bypassing type filter?
25. To prevent seal leakage, the case drain line of a hydraulic motor should:


Once you click "Get My Score!" you will be shown your score and will receive an email with the answers you submitted and the correct answers to each of the questions.