Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

HGE > HYDRAULICS > Flashcards

HYDRAULICS Flashcards

1
Q

Energy content of the flow per unit weight

A

Head

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

The discharge or flow rate at every section of the stream is the same

A

Continuous Flow

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Height the fluid would rise to in a piezometer

A

HGL

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Plot of the total energy content (Bernoulli content)

A

Energy Grade Line

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Pressure surge or wave resulting when a fluid in motion is forced to stop or change direction suddenly (momentum change)

A

Water Hammer

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Fixed flow rate at a specific minimum elevation

A

Critical Flow

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Same flow rate at any time

A

Steady Flow

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Same velocity at any section

A

Uniform Flow

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Fluid is a substance that

A) cannot be subjected to shear forces
B) always expands until it fills any container
C) has the same shear stress at a point regardless of its motion
D) cannot remain at rest under action of any shear force

A

D

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Density of water is maximum at

A) 0 deg C
B) 4 deg C
C) 100 deg C
D) 20 deg C

A

B

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Property of a fluid by which its own molecules are attracted is called

A) Adhesion
B) Cohesion
C) Viscosity
D) Surface Tension

A

B

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Property of fluid by which molecules of different kinds of fluids are attracted to each other is called

A) Adhesion
B) Cohesion
C) Viscosity
D) Surface Tension

A

A

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

The normal stress in a fluid will be constant in all directions at a point only if

A) it is compressible
B) it has zero viscosity
C) it is frictionless
D) it is at rest

A

D

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Specific weight of sea water is more that of pure water because it contains

A) dissolved air
B) dissolved salt
C) suspended matter
D) all of the above

A

D

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Free surface of a liquid tents to contract to the smallest possible area due to force of

A) surface tension
B) viscosity
C) friction
D) cohesion

A

A

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

A liquid would wet the solid, if adhesion forces as compared to cohesion forces are

A) less
B) more
C) equal
D) less at low temperature and more at high temperature

A

B

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Barometer is used to measure

A) pressure in pipes, channels, etc
B) atmospheric pressure
C) very low pressure
D) difference of pressure between two points

A

B

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

Manometer is used to measure

A) pressure in pipes, channels, etc
B) atmospheric pressure
C) very low pressure
D) velocity in pipes

A

A

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

If cohesion between molecules of a fluid is greater than adhesion between fluid and glass, then the free level of fluid in a dipped glass tube will be

A) higher than the surface of liquid
B) the same as the surface of liquid
C) lower than the surface of liquid
D) unpredictable

A

C

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

When a fluid is subjected to resistance, it undergoes a volumetric change due to

A) cohesion
B) strain
C) compressibility
D) adhesion

A

C

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

Liquids transmit pressure equally in all the directions according to

A) Boyle’s law
B) Archimedes principle
C) Pascal’s law
D) Newton’s formula

A

C

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

The rise or depression of a liquid in a tube due to surface tension with an increase in size of tube will

A) increase
B) remain unaffected
C) may increase or decrease depending on the characteristics of liquid
D) decrease

A

D

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

Mercury is often used in barometer because

A) it is the best liquid
B) the height of barometer will be less
C) its vapor pressure is so low that it may be neglected
D) both B and C

A

D

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

The point in the immersed body through which the resultant pressure of the liquid may be taken to act is known as

A) meta center
B) center of pressure
C) center of buoyancy
D) center of gravity

A

B

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Q

Which of the following is the correct relation between centroid and the center of pressure of a plane submerged in a liquid

A) CG is always below CP
B) CP is always below CG
C) CG is either at CP or below it
D) CP is either at CG or below it

A

D

26
Q

The total pressure force on a plane area is equal to the area multiplied by the intensity of pressure at the centroid, if

A) the area is horizontal
B) the area is vertical
C) the area is inclined
D) all of the above

A

D

27
Q

Choose the wrong statement

A) The horizontal component of the hydrostatic force on any surface is equal to the normal force on the vertical projection of the surface
B) The horizontal component acts through the center of pressure for the vertical projection
C) The vertical component of the hydrostatic force on any surface is equal to the weight of the volume of the liquid above the area
D) The vertical component passes through the center of pressure of the volume

A

D

28
Q

Center of pressure on an inclined plane is

A) at the centroid
B) above the centroid
C) below the centroid
D) at metacenter

A

C

29
Q

Can center of pressure for a vertical plane submerged surface ever be above center of gravity

A) Yes
B) No
C) It can be above in cases where the surface height is very large
D) None of the mentioned

A

B

30
Q

In a vertically submerged plane surface, pressure at every point remains same

A) True
B) False

A

B

31
Q

For an inclined plate the pressure intensity at every point differs

A) True
B) False

A

A

32
Q

The magnitude of total pressure and center of pressure is independent on the shape of the submerged plane surface

A) True
B) False

A

B

33
Q

What is the variation of total pressure with depth for any submerged surface if we neglect variation in the density?

A) Linear
B) Parabolic
C) Curvilinear
D) Logarithmic

A

A

34
Q

” A body in a fluid is acted by a buoyant force which is equal to the weight of the fluid displaced”

A

Archimedes Principle

35
Q

The resultant upward pressure of a fluid on a floating body is equal to the weight of the fluid displaced by the body

A) Equilibrium of a floating body
B) Archimedes’ principle
C) Bernoulli’s theorem
D) Metacentric principle

A

B

36
Q

The resultant upward pressure of the fluid on an immersed body is called

A) upthrust
B) buoyant fore
C) center of pressure
D) all of the above

A

B

37
Q

What is the principal cause of action of buoyant force on a body submerged partially or fully in fluid?

A) Displacement of fluid due to submerged body
B) Development of force due to dynamic action
C) Internal shear forced mitigating external forces
D) None of the mentioned

A

A

38
Q

The center of gravity of the volume of the liquid displaced by an immersed body is called

A) metacenter
B) center of pressure
C) center of buoyancy
D) center of gravity

A

C

39
Q

The horizontal component of buoyant force is

A) Negligible
B) Same as buoyant force
C) Zero
D) None of the above

A

C

40
Q

The line of action of the buoyant force acts through the

A) centroid of the volume of fluid vertically above the body
B) center of the volume of floating body
C) center of gravity of any submerged body
D) centroid of the displaced volume of fluid

A

D

41
Q

Choose the wrong statement

A) any weight, floating or immersed in a liquid, is acted upon by a buoyant force
B) buoyant force is equal to the weight of the liquid displaced
C) the point through which buoyant force acts, is called the center of buoyancy
D) center of buoyancy is located above the center of gravity of the displaced fluid

A

D

42
Q

According to the principle of buoyancy a body totally or partially immersed in a fluid will be lifted up by a force equal to

A) the weight of the body
B) more than the weight of the body
C) less than the weight of the body
D) weight of the fluid displaced by the body

A

D

43
Q

How can relatively denser object be made to float on the less dense fluid?

A) by altering the shape
B) by altering the forces acting on the object
C) by altering the shear forces acting on the object
D) none of the mentioned

A

A

44
Q

Translation from side to side

A

Sway

45
Q

Translation from forward to backward

A

Surge

46
Q

Translation from upward to downward

A

Heave

47
Q

Rotation on vertical axis

A

Yaw

48
Q

Rotation on minor axis

A

Pitch

49
Q

Rotation on major axis

A

Roll

50
Q

The conditions for the stable equilibrium of a floating body are

A) the metacenter should lie above the center of gravity
B) the center of buoyancy and the center of gravity must lie on the same vertical line
C) a righting couple should be formed
D) all of the above

A

D

51
Q

Metacentric height is given as the distance between

A) the center of gravity of the body and the meta center
B) the center of gravity of the body and the center of buoyancy
C) the center of gravity of the body and the center of pressure
D) center of buoyancy and metacenter

A

A

52
Q

Metacenter is the point of intersection of

A) Vertical upward force through eg of the body and center line of body
B) buoyant force and the center line of body
C) midpoint between eg and center of buoyancy
D) all of the above

A

B

53
Q

When a body floating in a liquid, is displaced slightly, it oscillates about

A) cg of body
B) center of pressure
C) center of buoyancy
D) metacenter

A

D

54
Q

When the ship’s metacenter and center of gravity coincide at same point then the vessel is said to be in

A) equilibrium
B) stable equilibrium
C) unstable equilibrium
D) neutral equilibrium

A

D

55
Q

Conduits where liquid flows with free or atmoshperic surface

A

Open Channels

56
Q

The same depth, cross sectional area and velocity for a length of flow

A

Uniform Flow

57
Q

Channel bed is parallel to the EGL

A

Uniform Flow

58
Q

Depth of flow where the discharge is maximum for a given specific energy

A

Critical Depth

59
Q

Depth of flow where E is minimum for a given Q

A

Critical Depth

60
Q

Type of shock, where the flow undergoes a sudden transition from swift thin (shallow) flow to tranquil, thick (deep) flow

A

Hydraulic Jump

61
Q
A

HGE (3 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions