1) One litre of a certain fluid weighs 8N. What is its specific volume?
a. 2.03 x 10 ^{– 3} m ^{3}/kg
b. 20.3 x 10 ^{– 3} m ^{3}/kg
c. 12.3 x 10 ^{– 3} m ^{3}/kg
d. 1.23 x 10 ^{– 3} m ^{3}/kg
Answer
Explanation

ANSWER: 1.23 x 10^{– 3} m^{3}/kg
Explanation: No explanation is available for this question!


2) What is the correct formula for absolute pressure?
a. P _{abs} = P _{atm} – P _{gauge}
b. P _{abs} = P _{vacuum} – P _{atm}
c. P _{abs} = P _{vacuum} + P _{atm}
d. P _{abs} = P _{atm}+ P _{gauge}
Answer
Explanation

ANSWER: P_{abs} = P_{atm}+ P_{gauge}
Explanation: No explanation is available for this question!


3) According to Archimede's principle, if a body is immersed partially or fully in a fluid then the buoyancy force is _______ the weight of fluid displaced by the body.
a. equal to
b. less than
c. more than
d. unpredictable
Answer
Explanation

ANSWER: equal to
Explanation: No explanation is available for this question!


4) When is a liquid said to be not in a boiling or vaporized state?
a. If the pressure on liquid is equal to its vapour pressure
b. If the pressure on liquid is less than its vapour pressure
c. If the pressure on liquid is more than its vapour pressure
d. Unpredictable
Answer
Explanation

ANSWER: If the pressure on liquid is more than its vapour pressure
Explanation: No explanation is available for this question!


5) Bulk modulus is the ratio of
a. shear stress to volumetric strain
b. volumetric strain to shear stress
c. compressive stress to volumetric strain
d. volumetric strain to compressive stress
Answer
Explanation

ANSWER: compressive stress to volumetric strain
Explanation: No explanation is available for this question!


6) When the angle between surface tension with the liquid (θ) is greater than 90^{o}, the liquid becomes
a. flat
b. concave upward
c. convex upward
d. unpredictable
Answer
Explanation

ANSWER: convex upward
Explanation: No explanation is available for this question!


7) The fluid will rise in capillary when the capillary is placed in fluid, if
a. the adhesion force between molecules of fluid and tube is less than the cohesion between liquid molecules
b. the adhesion force between molecules of fluid and tube is more than the cohesion between liquid molecules
c. the adhesion force between molecules of fluid and tube is equal to the cohesion between liquid molecules
d. cannot say
Answer
Explanation

ANSWER: the adhesion force between molecules of fluid and tube is more than the cohesion between liquid molecules
Explanation: No explanation is available for this question!


8) The below diagram is a graph of change in shear stress with respect to velocity gradient in a fluid. What is a type of the fluid?
a. Newtonian fluid
b. NonNewtonian fluid
c. Ideal fluid
d. Dilatent fluid
Answer
Explanation

ANSWER: NonNewtonian fluid
Explanation: No explanation is available for this question!


9) What is an ideal fluid?
a. A fluid which has no viscosity
b. A fluid which is incompressible
c. A fluid which has no surface tension
d. All of the above
Answer
Explanation

ANSWER: All of the above
Explanation: No explanation is available for this question!


10) Newton's law of viscosity states that
a. the shear stress applied to the fluid is directly proportional to the velocity gradient (du/dy)
b. the shear stress applied to the fluid is inversely proportional to the velocity gradient (du/dy)
c. the shear stress applied to the fluid is directly proportional to the specific weight of the fluid
d. the shear stress applied to the fluid is inversely proportional to the specific weight of the fluid
Answer
Explanation

ANSWER: the shear stress applied to the fluid is directly proportional to the velocity gradient (du/dy)
Explanation: No explanation is available for this question!

