Governing Principles of Hydraulic System - 1 - MCQs and Answers

Governing Principles of Hydraulic System – 1 – MCQs and Answers

1. Generally liquids are non-compressible but when a large pressure of 70 bar is applied, petroleum oil can be compressed up to

a. 0.5% of its original volume
b. 1% of its original volume
c. 5% of its original volume
d. none of the above

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2. Can all hydraulic fluids be compressed when extremely large pressure is applied

a. Yes
b. No

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3.The resistance offered to the flow of fluid inside a piston develops into

a. pressure
b. force
c. stress
d. all of the above

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4. At low pressures, liquids are

a. compressible
b. non-compressible
c. unpredictable

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5.Which of the following statements are false?

1. pressure is resistance to flow
2. friction creates pressure
3. load cannot create pressure on the system
4. the pressure developed decreases if load offers more resistance

a. 1, 2 and 4
b. 1 and 2
c. 3 and 4
d. none of these

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6. If no load is attached to piston rod, the movement of piston assembly is possible when

a. oil overcomes its self weight
b. oil overcomes friction in the piston rod assembly
c. both a and b
d. none of these

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7.If capacity of pump is more, it pumps less oil per unit time.

a. True
b. False

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