MCQs of Flow through pipes (Fluid Mechanics and Hydraulic Machines - 3141906)

Fluid Mechanics and Hydraulic Machines (3141906) MCQs

MCQs of Flow through pipes

Showing 1 to 10 out of 28 Questions

Which one of the following is a major loss?

(a)	Frictional loss
(b)	Shock loss
(c)	Entry loss
(d)	Exit loss

Which property of the fluid accounts for the major losses in pipes?

(a)	Density
(b)	Specific gravity
(c)	Viscosity
(d)	Compressibility

The frictional resistance for fluids in motion is

(a)	proportional to the velocity in laminar flow and to the square of the velocity in turbulent flow
(b)	proportional to the square of the velocity in laminar flow and to the velocity in turbulent flow
(c)	proportional to the velocity in both laminar flow and turbulent flow
(d)	proportional to the square of the velocity in both laminar flow and turbulent flow

Which one of the following is correct?

(a)	Darcy-Weisbach’s formula is generally used for head loss in flow through both pipes and open channels
(b)	Chezy’s formula is generally used for head loss in flow through both pipes and open channels
(c)	Darcy-Weisbach’s formula is generally used for head loss in flow through both pipes and Chezy’s formula for open channels
(d)	Chezy’s formula is generally used for head loss in flow through both pipes and Darcy-Weisbach’s formula for open channels

A liquid flows through pipes 1 and 2 with the same flow velocity. If the ratio of their pipe diameters

d_{1} : d_{2}

be 3:2, what will be the ratio of the head loss in the two pipes?

(a)	3:2
(b)	9:4
(c)	2:3
(d)	4:9

A liquid flows through two similar pipes 1 and 2. If the ratio of their flow velocities

V_{1} : V_{2}

be 2:3, what will be the ratio of the head loss in the two pipes

(a)	3:2
(b)	9:4
(c)	2:3
(d)	4:9

A liquid flows with the same velocity through two pipes 1 and 2 having the same diameter. If the length of the second pipe be twice that of the first pipe, what should be the ratio of the head loss in the two pipes?

(a)	1;2
(b)	2:1
(c)	1:4
(d)	4:1

The head loss at the entrance of the pipe is ............. the head loss at it’s exit.

(a)	equal to
(b)	half
(c)	twice
(d)	four times

On which of the factors does the co-efficient of bend in a pipe depend?

(a)	angle of bend and radius of curvature of the bend
(b)	angle of bend and radius of the pipe
(c)	radius of curvature of the bend and pipe
(d)	radius of curvature of the bend and pipe and angle of bend

10.

Energy gradient line takes into consideration

(a)	potential and kinetic heads only
(b)	potential and pressure heads only
(c)	kinetic and pressure heads only
(d)	potential, kinetic and pressure heads

Showing 1 to 10 out of 28 Questions