Home
Current Affairs January 2024

What is the correct answer?

4

The resultant of all normal pressures acts

A. At C.G. of body

B. At center of pressure

C. Vertically upwards

D. At metacentre

Correct Answer :

C. Vertically upwards


Related Questions

What is the correct answer?

4

Select the correct statement

A. Local atmospheric pressure depends upon elevation of locality only

B. Standard atmospheric pressure is the mean local atmospheric pressure a* sea level

C. Local atmospheric pressure is always below standard atmospheric pressure

D. A barometer reads the difference between local and standard atmospheric pressure

What is the correct answer?

4

When the Mach number is more than 6, the flow is called

A. Sub-sonic flow

B. Sonic flow

C. Super-sonic flow

D. Hyper-sonic flow

What is the correct answer?

4

The maximum discharge over a broad crested weir is

A. 0.384 Cd × L × H1/2

B. 0.384 Cd × L × H3/2

C. 1.71 Cd × L × H1/2

D. 1.71 Cd × L × H3/2

What is the correct answer?

4

The loss of head due to viscosity for laminar flow in pipes is (where d = Diameter of pipe, l = Length of pipe, v = Velocity of the liquid in the pipe, μ = Viscosity of the liquid, and w = Specific weight of the flowing liquid)

A. 4μvl/wd²

B. 8μvl/wd²

C. 16μvl/wd²

D. 32μvl/wd²

What is the correct answer?

4

The unit of viscosity is

A. Metres² per sec

B. kg-sec/metre

C. Newton-sec per metre²

D. Newton-sec per meter

What is the correct answer?

4

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

A. Adhesion

B. Cohesion

C. Viscosity

D. Compressibility

What is the correct answer?

4

Bulk modulus of a fluid __________ as the pressure increases.

A. Remain same

B. Decreases

C. Increases

D. None of these

What is the correct answer?

4

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

A. Centre of gravity

B. Centre of pressure

C. Metacentre

D. Centre of buoyancy

What is the correct answer?

4

Metacentric height is the distance between the metacentre and

A. Water surface

B. Center of pressure

C. Center of gravity

D. Center of buoyancy

What is the correct answer?

4

A flow in which the quantity of liquid flowing per second is not constant, is called

A. Streamline flow

B. Turbulent flow

C. Steady flow

D. Unsteady flow

What is the correct answer?

4

In a forced vortex, the velocity of flow everywhere within the fluid is

A. Maximum

B. Minimum

C. Zero

D. Nonzero finite

What is the correct answer?

4

Total pressure on a lmxlm gate immersed vertically at a depth of 2 m below the free water surface will be

A. 1000 kg

B. 4000 kg

C. 2000 kg

D. 8000 kg

What is the correct answer?

4

A point, in a compressible flow where the velocity of fluid is zero, is called

A. Critical point

B. Vena contracta

C. Stagnation point

D. None of these

What is the correct answer?

4

The buoyancy depends on

A. Mass of liquid displaced

B. Viscosity of the liquid

C. Pressure of the liquid displaced

D. Depth of immersion

What is the correct answer?

4

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

What is the correct answer?

4

A balloon lifting in air follows the following principle

A. Law of gravitation

B. Archimedes principle

C. Principle of buoyancy

D. All of the above

What is the correct answer?

4

The tangential velocity of the water element having a free vortex is

A. Directly proportional to its distance from the centre

B. Inversely proportional to its distance from the centre

C. Directly proportional to its (distance)2 from the centre

D. Inversely proportional to its (distance)2 from the centre

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

An average value of coefficient of velocity is

A. 0.62

B. 0.76

C. 0.84

D. 0.97

What is the correct answer?

4

The discharge over a rectangular notch is

A. Inversely proportional to H3/2

B. Directly proportional to H3/2

C. Inversely proportional to H5/2

D. Directly proportional to H5/2

What is the correct answer?

4

A flow in which the viscosity of fluid is dominating over the inertia force is called

A. Steady flow

B. Unsteady flow

C. Laminar flow

D. Turbulent flow

What is the correct answer?

4

In case of flow through parallel pipes,

A. The head loss for all the pipes is same

B. The total discharge is equal to the sum of discharges in the various pipes

C. The total head loss is the sum of head losses in the various pipes

D. Both (A) and (B)

What is the correct answer?

4

An internal mouthpiece is said to be running free if the length of the mouthpiece is __________ the diameter of the orifice.

A. Less than twice

B. More than twice

C. Less than three times

D. More than three times

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

A piece weighing 3 kg in air was found to weigh 2.5 kg when submerged in water. Its specific gravity is

A. 1

B. 5

C. 7

D. 6

What is the correct answer?

4

The variation in the volume of a liquid with the variation of pressure is called its

A. Surface tension

B. Compressibility

C. Capillarity

D. Viscosity

What is the correct answer?

4

The property of fluid by virtue of which it offers resistance to shear is called

A. Surface tension

B. Adhesion

C. Cohesion

D. Viscosity

What is the correct answer?

4

The line of action of the buoyant force acts through the Centroid of the

A. Submerged body

B. Volume of the floating body

C. Volume of the fluid vertically above the body

D. Displaced volume of the fluid

What is the correct answer?

4

The pressure less than atmospheric pressure is known as

A. Suction pressure

B. Vacuum pressure

C. Negative gauge pressure

D. All of these

What is the correct answer?

4

The discharge over a triangular notch is

A. Inversely proportional to H3/2

B. Directly proportional to H3/2

C. Inversely proportional to H5/2

D. Directly proportional to H5/2