Home
Current Affairs January 2024

What is the correct answer?

4

Uniform flow occurs when

A. The direction and magnitude of the velocity at all points are identical

B. The velocity of successive fluid particles, at any point, is the same at successive periods of time

C. The magnitude and direction of the velocity do not change from point to point in the fluid

D. The fluid particles move in plane or parallel planes and the streamline patterns are identical in each pleasure

Correct Answer :

C. The magnitude and direction of the velocity do not change from point to point in the fluid


Related Questions

What is the correct answer?

4

The continuity equation is connected with

A. Open channel/pipe flow

B. Compressibility of fluids

C. Conservation of mass

D. Steady/unsteady flow

What is the correct answer?

4

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

A. Expands

B. Does not change

C. Contracts

D. None of these

What is the correct answer?

4

In an isothermal atmosphere, the pressure

A. Decreases linearly with elevation

B. Remain constant

C. Varies in the same way as the density

D. Increases exponentially with elevation

What is the correct answer?

4

A body floats in stable equilibrium

A. When its meatcentric height is zero

B. When the metacentre is above C.G.

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

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

What is the correct answer?

4

The force present in a moving liquid is

A. Inertia force

B. Viscous force

C. Gravity force

D. All of these

What is the correct answer?

4

A flow whose streamline is represented by a curve, is called

A. One-dimensional flow

B. Two-dimensional flow

C. Three-dimensional flow

D. Four-dimensional flow

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

A square surface 3 m × 3 m lies in a vertical line in water pipe its upper edge at water surface. The hydrostatic force on square surface is

A. 9,000 kg

B. 13,500 kg

C. 18,000 kg

D. 27,000 kg

What is the correct answer?

4

For a perfect incompressible liquid, flowing in a continuous stream, the total energy of a particle remains the same, while the particle moves from one point to another. This statement is called

A. Continuity equation

B. Bernoulli's equation

C. Pascal's law

D. Archimedess principle

What is the correct answer?

4

Fluid is a substance which offers no resistance to change of

A. Pressure

B. Flow

C. Shape

D. Volume

What is the correct answer?

4

The height of a water column equivalent to a pressure of 0.15 MPa is

A. 15.3 m

B. 25.3 m

C. 35.3 m

D. 45.3 m

What is the correct answer?

4

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

What is the correct answer?

4

Unit of surface tension is

A. Energy/unit area

B. Velocity/unit area

C. Both of the above

D. It has no units

What is the correct answer?

4

Free surface of a liquid behaves like a sheet and tends to contract to smallest possible area due to the

A. Force of adhesion

B. Force of cohesion

C. Force of friction

D. Force of diffusion

What is the correct answer?

4

Which of the following instruments is used to measure flow on the application of Bernoulli's theorem?

A. Venturimeter

B. Orifice plate

C. Nozzle

D. All of the above

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

The force of buoyancy is always __________ the weight of the liquid displaced by the body.

A. Equal to

B. Less than

C. More than

D. None of these

What is the correct answer?

4

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

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

A fluid which obeys the Newton's law of viscosity is termed as

A. Real fluid

B. Ideal fluid

C. Newtonian fluid

D. Non-Newtonian fluid

What is the correct answer?

4

The discharge in an open channel corresponding to critical depth is

A. Zero

B. Minimum

C. Maximum

D. None of these

What is the correct answer?

4

Whenever a plate is held immersed at some angle with the direction of flow of the liquid, it is subjected to some pressure. The component of this pressure, in the direction of flow of the liquid, is known as

A. Lift

B. Drag

C. Stagnation pressure

D. Bulk modulus

What is the correct answer?

4

Which of the following instrument can be used for measuring speed of a submarine moving in deep sea?

A. Venturimeter

B. Orifice plate

C. Hot wire anemometer

D. Pitot tube

What is the correct answer?

4

The density of water is 1000 kg/m3 at

A. 0° C

B. 0° K

C. 4° C

D. 20° C

What is the correct answer?

4

The hydraulic mean depth or the hydraulic radius is the ratio of

A. Area of flow and wetted perimeter

B. Wetted perimeter and diameter of pipe

C. Velocity of flow and area of flow

D. None of these

What is the correct answer?

4

Two pipe systems can be said to be equivalent, when the following quantities are same

A. Friction loss and flow

B. Length and diameter

C. Flow and length

D. Friction factor and diameter

What is the correct answer?

4

The equation of continuity holds good when the flow

A. Is steady

B. Is one dimensional

C. Velocity is uniform at all the cross sections

D. All of the above

What is the correct answer?

4

In a depressed nappe

A. The pressure below the nappe is atmospheric

B. The pressure below the nappe is negative

C. The pressure above the nappe is atmospheric

D. The pressure above the nappe is negative

What is the correct answer?

4

The product of mass and acceleration of flowing liquid is called

A. Inertia force

B. Viscous force

C. Gravity force

D. Pressure force

What is the correct answer?

4

A piece of metal of specific gravity 7 floats in mercury of specific gravity 13.6. What fraction of its volume is under mercury?

A. 0.5

B. 0.4

C. 0.515

D. 0.5