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Diesel Mechanic Practice Test: Hydraulics & Pneumatics
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Diesel Mechanic Practice Test: Hydraulics & Pneumatics
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25 Questions

1. Which formula is used to calculate the absolute pressure?
2. How hydraulic transmission force is controlled?
3. What is the value of bar in metric unit of pressure?
4. Which valve is a orifice or restrictor in hydraulic system?
5. Which device is used for handling and removing contaminations from hydraulic oil?
6. Which formula is used to calculate the pressure?
7. What is the property of lubricant the temperature at that the vapour is given off from the oil?
8. Which property of oil catches fire and continue to be in flame?
9. Which valve block flow in one direction and allow free flow in the other direction?
10. Which term is used to move load with less efforts?
11. Which valve is used to remove the excess amount of oil in the hydraulic system?
12. Which valve has two inlet / one outlet in hydraulic / pneumatic system?
13. Which valve prevents the system pressure from rising too high if the pressure regulating valve fails?
14. Which one of the following comes under the applications of pneumatics?
15. Which formula is used to calculate force?
16. Which valves are used to control the direction of the flow of fluid?
17. Which System gets compressed air as energy inputs?
18. What is the name of the device used to remove dust, chips and other foreign particles from the fluid?
19. What is the unit of force in SI unit?
20. Which bearing material is used in connecting rod and electrical motors?
21. Which valve is used to permit fluid to flow in one direction and block the flow in opposite direction?
22. Which energy is present in oil by virtue of its motion?
23. Which part of double acting cylinder prevents air leakage from cylinder to atmosphere?
24. Which Pressure value is measured with respect to perfect vacuum?
25. Which pressure value is read through pressure gauge?

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