Fluid Mechanics - Part 1 Online Exam Quiz

Fluid Mechanics - Part 1 GK Quiz. Question and Answers related to Fluid Mechanics - Part 1. MCQ (Multiple Choice Questions with answers about Fluid Mechanics - Part 1

The fluid property, due to which, mercury does not wet the glass is


A : surface tension

B : viscosity

C : cohesion

D : adhesion

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Laminar flow of a Newtonion fluid ceases to exist, when the Reynolds number exceeds


A : 4000

B : 2100

C : 1500

D : 3000

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When the momentum of one fluid is used for moving another fluid, such a device is called a/an


A : jet pump

B : blower

C : acid egg

D : none of these

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The normal stress is the same in all directions at a point in a fluid, when the fluid is


A : non-viscous.

B : incompressible.

C : both (a) and (b).

D : having no motion of one fluid layer relative to the other.

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Head developed by a centrifugal pump depends on its


A : speed

B : impeller diameter

C : both (a) and (b)

D : neither (a) nor (b)

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Hydraulic mean depth ( D m ) for a circular pipe of diameter 'D' flowing full is 0.25 D. For a circular channel, at D m = 0.3 D, gives the condition for the maximum


A : flow rate

B : mean velocity

C : both 'a' & 'b'

D : neither 'a' nor 'b'

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The head loss in turbulent flow in a pipe varies


A : as velocity

B : as (velocity) 2

C : inversely as the square of diameter

D : inversely as the velocity

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Most commonly used joint in the underground pipe lines is the


A : sleevejoint

B : coupling

C : flange

D : expansion joint

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Schedule number of a pipe, which is a measure of its wall thickness, is given by


A : 1000 P'/S

B : 100 P'/S

C : 1000 S/P'

D : 10000 P'/S

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The net positive suction head (NPSH) of a centrifugal pump is defined as the sum of the velocity head and the pressure head at the


A : discharge.

B : suction.

C : suction minus vapor pressure of the liquid at suction temperature.

D : discharge minus vapor pressure of the liquid at the discharge temperature.

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