In a footstep bearing, if the speed of the shaft is doubled, then the torque required to overcome the viscous resistance will be

Question

In a footstep bearing, if the speed of the shaft is doubled, then the torque required to overcome the viscous resistance will be

A. Double

Correct Answer :

A. Double

Share this question with your friends

Show all Fluid Mechanics MCQ

Comment

When an internal mouthpiece is running free, the discharge through the mouthpiece is: (where a = Area of mouthpiece, and H = Height of liquid above the mouthpiece)

Discuss this answer

A pipe of length more than double the diameter of orifice fitted externally or internally to the orifice is called a

A. Notch

B. Weir

D. Nozzle

Discuss this answer

The length of a liquid stream while flowing over a weir __________ at the ends of the sill.

Discuss this answer

The pressure measured with the help of a Piezometer tube is in

A. N/mm2

B. N/m2

Discuss this answer

The point at which the resultant pressure on an immersed surface acts, is known as

Discuss this answer

The velocity corresponding to Reynold number of 2800, is called

Discuss this answer

Kinematic viscosity is dependent upon

D. Flow

Discuss this answer

An odd shaped body weighing 7.5 kg and occupying 0.01 m3 volume will be completely submerged in a fluid having specific gravity of

A. 1

B. 1.2

C. 0.8

D. 0.75

Discuss this answer

Uniform flow occurs when

Discuss this answer

Bernoulli's equation is applied to

Discuss this answer

The property of a fluid which enables it to resist tensile stress is known as

Discuss this answer

The shear stress between the two liquid layers is __________ proportional to the distance between two layers.

Discuss this answer

In order to increase sensitivity of U-tube manometer, one leg is usually inclined by angle θ. Sensitivity of inclined tube to sensitivity of Utube is equal to

A. Sinθ

C. Cosθ

Discuss this answer

A jet of water discharging from a 40 mm diameter orifice has a diameter of 32 mm at its vena contracta. The coefficient of contraction is

A. 0.46

B. 0.64

C. 0.78

D. 0.87

Discuss this answer

All the terms of energy in Bernoulli's equation have dimension of

A. Energy

B. Work

C. Mass

D. Length

Discuss this answer

An air vessel is provided at the summit in a siphon to

Discuss this answer

An object having 10 kg mass weighs 9.81 kg on a spring balance. The value of 'g' at this place is

Discuss this answer

The velocity of the liquid flowing through the divergent portion of a Venturimeter

Discuss this answer

The buoyancy depends upon the

Discuss this answer

Dynamic viscosity of most of the liquids with rise in temperature

Discuss this answer

The centre of pressure acts __________ the centre of gravity of immersed surface.

A. At

B. Above

C. Below

Discuss this answer

A vessel of 4 m³ contains oil which weighs 30 kN. The specific weight of the oil is

Discuss this answer

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

Discuss this answer

The meatcentric height is the distance between the

Discuss this answer

In a free vortex motion, the radial component of velocity everywhere is

C. Zero

Discuss this answer

The discharge through a convergent mouthpiece is __________ the discharge through an internal mouthpiece of the same diameter and head of water.

D. Double

Discuss this answer

Resultant pressure of the liquid in the case of an immersed body acts through

Discuss this answer

A body floats in stable equilibrium

Discuss this answer

The intensity of pressure on an immersed surface __________ with the increase in depth.

Discuss this answer

A glass tube of small diameter (d) is dipped in fluid. The height of rise or fall in the tube given by (where w = Specific weight of liquid, α = Angle of contact of the liquid surface, and σ = Surface tension)

Discuss this answer

Answer 1

B. Four times

Answer 2

C. Eight times

Answer 3

D. Sixteen times

Answer 4

A. 0.5 a. √2gH

Answer 5

B. 0.707 a. √2gH

Answer 6

C. 0.855 a. √2gH

Answer 7

D. a. √2gH

Answer 8

C. Mouthpiece

Answer 9

A. Expands

Answer 10

B. Does not change

Answer 11

C. Contracts

Answer 12

D. None of these

Answer 13

C. Head of liquid

Answer 14

D. All of these

Answer 15

A. Centre of gravity

Answer 16

B. Centre of depth

Answer 17

C. Centre of pressure

Answer 18

D. Centre of immersed surface

Answer 19

A. Sub-sonic velocity

Answer 20

B. Super-sonic velocity

Answer 21

C. Lower critical velocity

Answer 22

D. Higher critical velocity

Answer 23

A. Pressure

Answer 24

B. Distance

Answer 25

C. Density

Answer 26

A. The flow is steady

Answer 27

B. The flow is streamline

Answer 28

C. Size and shape of the cross section in a particular length remain constant

Answer 29

D. Size and cross section change uniformly along length

Answer 30

A. Venturimeter

Answer 31

B. Orifice meter

Answer 32

C. Pitot tube

Answer 33

D. All of these

Answer 34

A. Compressibility

Answer 35

B. Surface tension

Answer 36

C. Cohesion

Answer 37

D. Adhesion

Answer 38

A. Directly

Answer 39

B. Inversely

Answer 40

C. Both A and B

Answer 41

D. None of these

Answer 42

B. 1/Sinθ

Answer 43

D. 1/Cosθ

Answer 44

A. Avoid interruption in the flow

Answer 45

B. Increase discharge

Answer 46

C. Increase velocity

Answer 47

D. Maintain pressure difference

Answer 48

A. 10 m/sec²

Answer 49

B. 9.81 m/sec²

Answer 50

C. 9.75 m/sec²

Answer 51

D. 9 m/sec

Answer 52

A. Remains constant

Answer 53

B. Increases

Answer 54

C. Decreases

Answer 55

D. Depends upon mass of liquid

Answer 56

A. Weight of the liquid displaced

Answer 57

B. Pressure with which the liquid is displaced

Answer 58

C. Viscosity of the liquid

Answer 59

D. Compressibility of the liquid

Answer 60

A. Increases

Answer 61

B. Decreases

Answer 62

C. Remain unaffected

Answer 63

D. Unpredictable

Answer 64

D. None of these

Answer 65

A. 4.5 kN/m³

Answer 66

B. 6 kN/m³

Answer 67

C. 7.5 kN/m³

Answer 68

D. 10 kN/m³

Answer 69

A. Centre of gravity

Answer 70

B. Centre of pressure

Answer 71

C. Metacentre

Answer 72

D. Centre of buoyancy

Answer 73

A. Centre of gravity of the floating body and the centre of buoyancy

Answer 74

B. Centre of gravity of the floating body and the metacentre

Answer 75

C. Metacentre and centre of buoyancy

Answer 76

D. Original centre of buoyancy and new centre of buoyancy

Answer 77

A. Maximum

Answer 78

B. Minimum

Answer 79

D. Nonzero and finite

Answer 80

A. Equal to

Answer 81

B. One-half

Answer 82

C. Three fourth

Answer 83

A. Centre of gravity

Answer 84

B. Centre of pressure

Answer 85

C. Metacentre

Answer 86

D. Centre of buoyancy

Answer 87

A. When its meatcentric height is zero

Answer 88

B. When the metacentre is above C.G.

Answer 89

C. When its e.g. is below its center of buoyancy

Answer 90

D. Metacentre has nothing to do with position of e.g. for determining stability

Answer 91

A. Does not change

Answer 92

B. Increases

Answer 93

C. Decreases

Answer 94

D. None of these

Answer 95

A. 4wd/σ cosα

Answer 96

B. σ cosα/4wd

Answer 97

C. 4σ cosα/wd

Answer 98

D. wd/4σ cosα

In a footstep bearing, if the speed of the shaft is doubled, then the torque required to overcome the viscous resistance will be

Correct Answer :

Show all Fluid Mechanics MCQ

Related Questions

When an internal mouthpiece is running free, the discharge through the mouthpiece is: (where a = Area of mouthpiece, and H = Height of liquid above the mouthpiece)

A pipe of length more than double the diameter of orifice fitted externally or internally to the orifice is called a

The length of a liquid stream while flowing over a weir __________ at the ends of the sill.

The pressure measured with the help of a Piezometer tube is in

The point at which the resultant pressure on an immersed surface acts, is known as

The velocity corresponding to Reynold number of 2800, is called

Kinematic viscosity is dependent upon

An odd shaped body weighing 7.5 kg and occupying 0.01 m3 volume will be completely submerged in a fluid having specific gravity of

Uniform flow occurs when

Bernoulli's equation is applied to

The property of a fluid which enables it to resist tensile stress is known as

The shear stress between the two liquid layers is __________ proportional to the distance between two layers.

In order to increase sensitivity of U-tube manometer, one leg is usually inclined by angle θ. Sensitivity of inclined tube to sensitivity of Utube is equal to

A jet of water discharging from a 40 mm diameter orifice has a diameter of 32 mm at its vena contracta. The coefficient of contraction is

All the terms of energy in Bernoulli's equation have dimension of

An air vessel is provided at the summit in a siphon to

An object having 10 kg mass weighs 9.81 kg on a spring balance. The value of 'g' at this place is

The velocity of the liquid flowing through the divergent portion of a Venturimeter

The buoyancy depends upon the

Dynamic viscosity of most of the liquids with rise in temperature

The centre of pressure acts __________ the centre of gravity of immersed surface.

A vessel of 4 m³ contains oil which weighs 30 kN. The specific weight of the oil is

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

The meatcentric height is the distance between the

In a free vortex motion, the radial component of velocity everywhere is

The discharge through a convergent mouthpiece is __________ the discharge through an internal mouthpiece of the same diameter and head of water.

Resultant pressure of the liquid in the case of an immersed body acts through

A body floats in stable equilibrium

The intensity of pressure on an immersed surface __________ with the increase in depth.

A glass tube of small diameter (d) is dipped in fluid. The height of rise or fall in the tube given by (where w = Specific weight of liquid, α = Angle of contact of the liquid surface, and σ = Surface tension)

Also checkout

In a footstep bearing, if the speed of the shaft is doubled, then the torque required to overcome the viscous resistance will be

Correct Answer :

Show all Fluid Mechanics MCQ

Related Questions

When an internal mouthpiece is running free, the discharge through the mouthpiece is: (where a = Area of mouthpiece, and H = Height of liquid above the mouthpiece)

A pipe of length more than double the diameter of orifice fitted externally or internally to the orifice is called a

The length of a liquid stream while flowing over a weir __________ at the ends of the sill.

The pressure measured with the help of a Piezometer tube is in

The point at which the resultant pressure on an immersed surface acts, is known as

The velocity corresponding to Reynold number of 2800, is called

Kinematic viscosity is dependent upon

An odd shaped body weighing 7.5 kg and occupying 0.01 m3 volume will be completely submerged in a fluid having specific gravity of

Uniform flow occurs when

Bernoulli's equation is applied to

The property of a fluid which enables it to resist tensile stress is known as

The shear stress between the two liquid layers is __________ proportional to the distance between two layers.

In order to increase sensitivity of U-tube manometer, one leg is usually inclined by angle θ. Sensitivity of inclined tube to sensitivity of Utube is equal to

A jet of water discharging from a 40 mm diameter orifice has a diameter of 32 mm at its vena contracta. The coefficient of contraction is

All the terms of energy in Bernoulli's equation have dimension of

An air vessel is provided at the summit in a siphon to

An object having 10 kg mass weighs 9.81 kg on a spring balance. The value of 'g' at this place is

The velocity of the liquid flowing through the divergent portion of a Venturimeter

The buoyancy depends upon the

Dynamic viscosity of most of the liquids with rise in temperature

The centre of pressure acts __________ the centre of gravity of immersed surface.

A vessel of 4 m3 contains oil which weighs 30 kN. The specific weight of the oil is

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

The meatcentric height is the distance between the

In a free vortex motion, the radial component of velocity everywhere is

The discharge through a convergent mouthpiece is __________ the discharge through an internal mouthpiece of the same diameter and head of water.

Resultant pressure of the liquid in the case of an immersed body acts through

A body floats in stable equilibrium

The intensity of pressure on an immersed surface __________ with the increase in depth.

A glass tube of small diameter (d) is dipped in fluid. The height of rise or fall in the tube given by (where w = Specific weight of liquid, α = Angle of contact of the liquid surface, and σ = Surface tension)

Also checkout

A vessel of 4 m³ contains oil which weighs 30 kN. The specific weight of the oil is