Fluid Characteristics - 2 - MCQs with Answers

Fluid Characteristics – 2 – MCQs with Answers

1. What is the disadvantage of petroleum based fluids?

a. low flash point
b. low density
c. light weight
d. all the above

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2. How is the water content in High Water Fluids (HFA) compared to oil content?

a. more oil than water
b. oil and water are in same proportion
c. more water than oil
d. contains only water

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3. A fluid used in hydraulic systems should have

a. low oxidation resistance
b. high oxidation resistance
c. high oxidation enhancing ability
d. none of these

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4. At which pressure, petroleum oil used in hydraulic systems gets compressed by 1/2 % ?

a. 70 bar
b. 40 bar
c. 30 bar
d. 95 bar

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5. What is the relation between temperature and specific weight for water glycol?

a. as temperature increases specific weight decreases
b. as temperature increases specific weight increases
c. temperature and specific weight vary linearly
d. none of the above

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6. What is the relation between temperature and viscosity for hydraulic oil?

a. temperature and viscosity vary linearly
b. as temperature decreases viscosity decreases at atmospheric pressure
c. as temperature increases viscosity decreases at atmospheric pressure
d. none of the above

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