Hydraulics And Fluid Mechanics MCQ Questions & Answers

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Each section contains 100 MCQs on Hydraulics and Fluid Mechanics .

A fluid of kinematic viscosity 0.4 cm²/sec flows through a 8 cm diameter pipe. The maximum velocity for laminar flow will be

A) Less than 1 m/sec B) 1 m/sec C) 1.5 m/sec D) 2 m/sec

Discuss

Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

Stream lines and path lines always coincide in case of

A) steady flow B) laminar flow C) uniform flow D) turbulent flow

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

Center of pressure on an inclined plane is

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

Discuss

Answer & Solution

Answer: Option C

No explanation is given for this question. Let's Discuss on Board

Which of the following velocity potentials satisfies continuity equation?

A) x²y B) x² - y² C) cosx D) x² + y²

Discuss

Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

Capillary action is due to the

A) surface tension B) cohesion of the liquid C) adhesion of the liquid molecules and the molecules on the surface of a solid D) all of the above

Discuss

Answer & Solution

Answer: Option D

No explanation is given for this question. Let's Discuss on Board

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

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

The capillary rise at 20°C in a clean glass tube of 1 mm bore containing water is ap-proximately

A) 5 mm B) 10 mm C) 20 mm D) 30 mm

Discuss

Answer & Solution

Answer: Option D

No explanation is given for this question. Let's Discuss on Board

The continuity equation is connected with

A) viscous/unviscous fluids B) compressibility of fluids C) conservation of mass D) steady/unsteady flow

Discuss

Answer & Solution

Answer: Option C

No explanation is given for this question. Let's Discuss on Board

Kinematic viscosity is dependent upon

A) pressure B) distance C) flow D) density

Discuss

Answer & Solution

Answer: Option D

No explanation is given for this question. Let's Discuss on Board

Froude 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 dis-continuity, gravity forces, and wave making effect, as with ship’s hulls D) all of the above

Discuss

Answer & Solution

Answer: Option C

No explanation is given for this question. Let's Discuss on Board

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Hydraulics And Fluid Mechanics MCQ Questions & Answers | Civil Engineering