Home
Current Affairs January 2024

What is the correct answer?

4

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

A. Vacuum pressure

B. Gauge pressure

C. Absolute pressure

D. Atmospheric pressure

Correct Answer :

B. Gauge pressure


Related Questions

What is the correct answer?

4

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

A. Increase

B. Remain unaffected

C. May increase or decrease depending on the characteristics of liquid

D. Decrease

What is the correct answer?

4

In one dimensional flow, the flow

A. Is steady and uniform

B. Takes place in straight line

C. Takes place in curve

D. Takes place in one direction

What is the correct answer?

4

Barometer is used to measure

A. Velocity of liquid

B. Atmospheric pressure

C. Pressure in pipes and channels

D. Difference of pressure between two points in a pipe

What is the correct answer?

4

According to Bazin's formula, the discharge over a rectangular weir is mL2g x H3/2where m is equal to

A. 0.405 + (0.003/H)

B. 0.003 + (0.405/H)

C. 0.405 + (H/0.003)

D. 0.003 + (H/0.405)

What is the correct answer?

4

The flow of water through the hole in the bottom of a wash basin is an example of

A. Steady flow

B. Uniform flow

C. Free vortex

D. Forced vortex

What is the correct answer?

4

The discharge through a siphon spillway is

A. Cd × a × √(2gH)

B. Cd × a × √(2g) × H3/2

C. Cd × a × √(2g) × H2

D. Cd × a × √(2g) × H5/2

What is the correct answer?

4

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

A. Directly

B. Inversely

C. Both A and B

D. None of these

What is the correct answer?

4

The pressure of fluid due to hammer blow is

A. Directly proportional to density of fluid

B. Inversely proportional to density of fluid

C. Directly proportional to (density)1/2 of fluid

D. Inversely proportional to (density)1/2 of fluid

What is the correct answer?

4

In an immersed body, centre of pressure is

A. At the centre of gravity

B. Above the centre of gravity

C. Below be centre of gravity

D. Could be above or below e.g. depending on density of body and liquid

What is the correct answer?

4

The flow in which each liquid particle has a definite path and their paths do not cross each other is called

A. One dimensional flow

B. Streamline flow

C. Steady flow

D. Turbulent flow

What is the correct answer?

4

The ratio of the inertia force to the __________ is called Euler's number.

A. Pressure force

B. Elastic force

C. Surface tension force

D. Viscous force

What is the correct answer?

4

Falling drops of water become spheres due to the property of

A. Surface tension of water

B. Compressibility of water

C. Capillarity of water

D. Viscosity of water

What is the correct answer?

4

For manometer, a better liquid combination is one having

A. Higher surface tension

B. Lower surface tension

C. Surface tension is no criterion

D. High density and viscosity

What is the correct answer?

4

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

A. Remains constant

B. Increases

C. Decreases

D. Depends upon mass of liquid

What is the correct answer?

4

Mach number is significant in

A. Supersonics, as with projectiles and jet propulsion

B. Full immersion or completely enclosed flow, as with pipes, aircraft wings, nozzles etc.

C. Simultaneous motion through two fluids where there is a surface of discontinuity, gravity force, and wave making effects, as with ship's hulls

D. All of the above

What is the correct answer?

4

A nozzle is generally made of

A. Cylindrical shape

B. Convergent shape

C. Divergent shape

D. Convergent-divergent shape

What is the correct answer?

4

The kinematic viscosity is the

A. Ratio of absolute viscosity to the density of the liquid

B. Ratio of density of the liquid to the absolute viscosity

C. Product of absolute viscosity and density of the liquid

D. Product of absolute viscosity and mass of the liquid

What is the correct answer?

4

The viscosity of water is __________ than that of mercury.

A. Higher

B. Lower

C. Same as

D. None of these

What is the correct answer?

4

An open tank containing liquid is made to move from rest with a uniform acceleration. The angle 0 which the free surface of liquid makes with the horizontal is such that (where a = Horizontal acceleration of the tank, and g = Acceleration due to gravity)

A. tanθ = a/g

B. tanθ = 2 a/g

C. tanθ = a/2g

D. tanθ = a2/2g

What is the correct answer?

4

The maximum efficiency of transmission through a pipe is

A. 50 %

B. 56.7 %

C. 66.67 %

D. 76.66 %

What is the correct answer?

4

Mercury is often used in barometer because

A. It is the best liquid

B. The height of barometer will be less

C. Its vapour pressure is so low that it may be neglected

D. Both (B) and (C)

What is the correct answer?

4

The error in discharge (dQ/Q) to the error in measurement of head (dH/H) over a triangular notch is given by

A. dQ/Q = 3/2 × (dH/H)

B. dQ/Q = 2 × (dH/H)

C. dQ/Q = 5/2 × (dH/H)

D. dQ/Q = 3 × (dH/H)

What is the correct answer?

4

Kinematic viscosity is dependent upon

A. Pressure

B. Distance

C. Density

D. Flow

What is the correct answer?

4

Reynolds number is significant in

A. Supersonics, as with projectile and jet propulsion

B. Full immersion or completely enclosed flow, as with pipes, aircraft wings, nozzles etc.

C. Simultaneous motion through two fluids where there is a surface of discontinuity, gravity forces, and wave making effect, as with ship's hulls

D. All of the above

What is the correct answer?

4

The rise of liquid along the walls of a revolving cylinder about the initial level is __________ the depression of the liquid at the axis of rotation.

A. Same as

B. Less than

C. More than

D. None of these

What is the correct answer?

4

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

A. Adhesion

B. Cohesion

C. Viscosity

D. Compressibility

What is the correct answer?

4

The total pressure on an immersed surface inclined at an angle θ with the liquid surface is

A. wA

B. wx

C. wAx

D. wAx/sinθ

What is the correct answer?

4

The coefficient of venturi-flume, generally, lies between

A. 0.3 to 0.45

B. 0.50 to 0.75

C. 0.75 to 0.95

D. 0.95 to 1.0

What is the correct answer?

4

The stability of a dam is checked for

A. Tension at the base

B. Overturning of the wall or dam

C. Sliding of the wall or dam

D. All of these

What is the correct answer?

4

For measuring flow by a Venturimeter, if should be installed in

A. Vertical line

B. Horizontal line

C. Inclined line with flow downward

D. In any direction and in any location