Fluid Mechanics and Hydraulic Machines (3141906) MCQs

MCQs of Flow through pipes

Showing 11 to 20 out of 28 Questions
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11.
Hydraulic 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
Answer:

Option (b)

12.
The liquid flowing through a series of pipes can take-up .........................
(a) pipes of different diameters
(b) pipes of the same diameters only
(c) single pipe only
(d) short pipes only
Answer:

Option (a)

13.
What is the total loss developed in a series of pipes?
(a) Sum of losses in each pipe only
(b) Sum of local losses only
(c) Sum of local losses plus the losses in each pipe
(d) Zero
Answer:

Option (c)

14.
Which among the following is not a loss that is developed in the pipe?
(a) Entry
(b) Exit
(c) The connection between two pipes
(d) Liquid velocity
Answer:

Option (d)

15.
How do we determine the total discharge through parallel pipes?
(a) Add them
(b) Subtract them
(c) Multiply them
(d) Divide them
Answer:

Option (a)

16.
Coefficient of friction of laminar flow is
(a) Re16
(b) Re64
(c) 16Re
(d) 64Re
Answer:

Option (c)

17.
Where is a water hammer developed in hydro-electric power plants?
(a) Reservoir
(b) Penstock
(c) Turbine blades
(d) Pipe line
Answer:

Option (b)

18.
Water hammer is developed in which power plant?
(a) Solar
(b) Nuclear
(c) Hydro
(d) Wind
Answer:

Option (c)

19.
What is the function of a surge tank?
(a) It causes water hammer
(b) Produces surge in the pipeline
(c) Relieves water hammer
(d) Supplies water at constant pressure
Answer:

Option (c)

20.
What is the correct formula for loss at the exit of a pipe?
(a) he=0.5V22g
(b) he=V22g
(c) he=2V2g
(d) he=4V2g
Answer:

Option (b)

Showing 11 to 20 out of 28 Questions
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