Deck 4: Fundamental Hydrodynamics

Question 1

Which type of current measuring device consists of a propeller assembly immersed in flowing water with a mechanism calibrated to convert the turning of the propeller to a velocity?

A)pitot tube
C)current meter
B)weir
D)Venturi meter

Answer 1

C

Question 2

Which of the following describes potential energy per unit weight of a mass of water due to the pressure exerted from above?

A)position head
C)velocity head
B)pressure head
D)head loss

Answer 2

B

Question 3

Head loss describes the loss of energy per unit weight of a mass of water due to friction and turbulence.

Answer 3

True

Question 4

The ____________________ grade line depicts total energy (total energy head) at all stations along the system.

Question 5

The continuity equation is expressed as ____.

A)
C)
B)
D)

Question 6

The energy grade line (EGL) depicts potential energy (position plus pressure head) at all stations along the system.

Question 7

All particles of water flowing in a conduit travel generally in the same direction and generally at the same speed.

Question 8

The ____________________ flume consists of a constriction in the channel designed to produce critical depth in the flow stream.

Question 9

A Venturi meter consists of a carefully designed constriction in the pipe that causes flow velocity to increase in accordance with the continuity equation.

Question 10

Which flow occurs when the cross-sectional area of the conduit remains constant?

A)nonuniform flow
C)laminar flow
B)unsteady flow
D)uniform flow

Question 11

Steady flow occurs when discharge is ____________________ over time.

Question 12

represents ___________________ Principle.

Question 13

Which describes a smooth flow of water with relatively low velocity?

A)turbulent flow
C)laminar flow
B)steady flow
D)nonuniform flow

Question 14

A(n) ____________________ tube consists of an open-ended tube with a 90-degree bend near one end.

Question 15

Steady flow results from a relatively rapid change of discharge, such as the opening of a gate or closing of a valve.