Test: Laminar Flow in Pipes - 2 | 6 Questions MCQ Test

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This mock test of Test: Laminar Flow in Pipes - 2 for Civil Engineering (CE) helps you for every Civil Engineering (CE) entrance exam. This contains 6 Multiple Choice Questions for Civil Engineering (CE) Test: Laminar Flow in Pipes - 2 (mcq) to study with solutions a complete question bank. The solved questions answers in this Test: Laminar Flow in Pipes - 2 quiz give you a good mix of easy questions and tough questions. Civil Engineering (CE) students definitely take this Test: Laminar Flow in Pipes - 2 exercise for a better result in the exam. You can find other Test: Laminar Flow in Pipes - 2 extra questions, long questions & short questions for Civil Engineering (CE) on EduRev as well by searching above.

QUESTION: 1

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

Solution:

Maximum Reynold's number for laminar flow = 2000

QUESTION: 2

On a flat plate, point A is at the mid-section and point B is the trailing edge. The shear stresses τ_A at A and τ_B at B are such that

A.
τ_A > τ_B
B.
τ_B > τ_A
C.
τ_A = τ_B
D.
τ_A = τ_B if the boundary layer is laminar

Solution:

QUESTION: 3

In a two-dimensional flow of a viscous fluid couette flow is defined for

A.
pressure-gradient-driven laminar flow between fixed parallel plates
B.
pressure-gradient-driven laminar flow through non-circular duct
C.
pressure-gradient driven laminar flow through pipe
D.
laminar flow between a fixed and a moving plate

Solution:

Coutte flow is characterized as flow of very low value of Reynolds number between two parallel plate, one is fixed and other is movable.

QUESTION: 4

Consider the following statements regarding the laminar flow through a circular pipe:
1. The friction factor is constant.
2. Thp friction factor dspends Upon the pipe roughness.
3. The friction factor varies inversely with the Reynolds number of flow.
4. The velocity distribution is parabolic.
5. The pressure drop varies directly with the mean velocity.
Of these statements:

A.
1 and 4 are correct
B.
2 and 3 are correct
C.
2 and 4 are correct
D.
3 and 4 are correct

Solution:

For laminar flow th rough circular pipe It is neither constant, and does not depend on pipe roughness.
As head loss varies directly with mean velocity so pressure drop also.

QUESTION: 5

The velocity profile in fully developed laminar flow in a pipe of diameter D is given by u = u₀(1 - 4r²/D²), where r is the radial distance from the center. If the viscosity of the fluid is μ, the pressure drop across a length L of the pipe is