ESAS PART 9 - GERALDINO REVIEWER

Which of the following states that the buoyant force on a floating object is equal to the weight of the water displaced?

• A. Bernoulli's theorem

• B. Archimedes' principles

• C. Pascal's law

• D. Continuity flow equation

What is the purpose of a surge tank in a pipe line

• A. To smoothen the flow of water

• B. To minimize friction losses in pipe

• C. To prevent occurrence of hydraulic jump

• D. To relieve the pressure due to water hammer

Which one is not a dimensionless parameter?

• A. Froude number

• B. Darcy-weisbach friction factor

• C. Kinematic viscosity

• D. Weber number

A venturimeter is used to measure which one?

• A. Pressure of a flowing liquid

• B. Discharge of liquid flowing in a pipe

• C. Pressure difference of liquid flowing between two points in a pipe line

• D. Velocity of a flowing liquid

Froude's number is the ratio of inertia force to which one?

• A. Pressure force

• B. Elastic force

• C. Gravity force

• D. Surface tension force

Which one is true about an ideal fluid?

• A. It satisfies the continuity flow equation

• B. It is similar to a perfect gas

• C. It is frictionless and incompressible

• D. It obeys Newton's law of viscosity

Which of the following instruments measure the average fluid velocity rather than a point or local velocity in a pipe?

• A. Venturi meter

• B. Orifice meter

• C. Pitot tube

• D. Both A and B

What is true about the polytropic exponent n, for a perfect gas undergoing an isobaric process?

• A. n > 0

• B. n→∞

• C. n = 0

• D. n < 0

Which one refers to a flow in which the quantity of liquid flowing per second is not constant?

• A. Streamline flow

• B. Turbulent flow

• C. Steady flow

• D. Unsteady flow

How do you call the velocity corresponding to Reynolds number of 2000?

• A. Sub-sonic velocity

• B. Super-sonic velocity

• C. Lower critical velocity

• D. Higher critical velocity