Fluid Flow

A fluid with constant density, is _____.

• thick

• viscous

• compressible

• incompressible

Which of the following statements does NOT

describe an ideal fluid at constant temperature?

• An ideal fluid is incompressible

• An ideal fluid has constant density

• An ideal fluid has internal friction

• The flow of an ideal fluid is always steady

Which of the following statements is NOT correct?

• Streamlines are imaginary lines drawn to

  show the fluid flow

• Closely spaced streamlines indicate low

  velocity and high pressure

• Streamlines are always drawn parallel to

  the direction of the fluid flow

• Objects require less energy to move

  through a smooth streamlined flow

Which of the following is not a condition for a fluid

to be ideal?

• Non-viscous

• Incompressible

• Transparent

• Laminar flow

The flow of a fluid through a pipe is laminar. Which

of the following statements correctly describes the

velocity of the fluid?

• At a particular position the velocity is

  constant

• At a particular position the velocity is

  continually changing

• The velocity is a maximum at the edges of

  the pipe

• The velocity is always the same in adjacent

  layers

Which of the following options is not true about

the fluid shown in the figure below?

• It is an ideal fluid

• It has a steady flow

• It has laminar flow

• It has turbulent flow

Which of the following statements is/are true

about the liquid flowing from A to B around an object as shown in the figure below?

I. The liquid is in laminar, non-steady flow

II. There is a transition from laminar to

turbulent flow

III. There is a transition from turbulent flow to

laminar flow

• I only

• II only

• III only

• I and III only

Which type of fluid flow is smooth, and predictable?

• Turbulent

• Viscous

• Laminar

• Inertial

Turbulent flow is characterized by _______

• low flow rates

• irregular and chaotic flow

• regular streamlines

• constant speed

Which of the following is an example of turbulent

flow?

• The flow of water through a hose

• Pouring olive oil into a pan

• The wisps of smoke from a blown-out

  candle

• The flow of water in the center of a calm

  stream