Question 205General Subjects - Assistant Engineer70% to pass
When normal operating pressure is applied to the hydraulic oil in a high-pressure system, the oil _______________.
AI Explanation
The correct answer is A) viscosity will increase.
When normal operating pressure is applied to the hydraulic oil in a high-pressure system, the viscosity of the oil will increase. This is due to the compressibility of the oil - as the pressure increases, the molecules in the oil are forced closer together, resulting in an increase in viscosity.
The other answer choices are incorrect:
B) viscosity will decrease - the opposite is true, viscosity increases with increased pressure.
C) volume will increase - the volume of the oil will actually decrease as the pressure increases, due to the compressibility of the oil.
D) floc point will increase - the floc point, which is the temperature at which wax crystals form in the oil, is not affected by the applied pressure.
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