Fluid Mechanics and Hydraulic Machines (3141906) MCQs

MCQs of The Energy Equation and its Application

Showing 11 to 20 out of 32 Questions
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11.
The ratio of actual discharge to theoretical discharge through an orifice is
(a) CdCv
(b) CvCd
(c) Cc×Cv
(d) Cv×Cd
Answer:

Option (c)

12.
The actual velocity at vena contracta for flow through an orifice from a reservoir of height H is
(a) 2gH
(b) Cv2gH
(c) Cd2gH
(d) none of the above
Answer:

Option (b)

13.
The coefficient of discharge, velocity and contraction are related as
(a) Cd=Cc+Cv
(b) Cd=Cc×Cv
(c) Cd=Cc-Cv
(d) Cd=CcCv
Answer:

Option (b)

14.
The value of the coefficient of discharge in comparison to the coefficient of velocity is
(a) more
(b) less
(c) same
(d) unpredictable
Answer:

Option (b)

15.
The fluid jet discharging from a 100mm diameter orifice has a diameter of 80mm at its vena-contracta. The coefficient of contraction is
(a) 0.8
(b) 1.25
(c) 0.2
(d) 0.64
Answer:

Option (d)

16.
Bernoulli's theorem deals with the conservation of
(a) mass
(b) energy
(c) momentum
(d) force
Answer:

Option (b)

17.
The discharge through an orifice fitted in a tank can be increased by
(a) fitting a short length of pipe to the outside
(b) sharpening the edges of the orifice
(c) fitting a long length of pipe to the outside
(d) all of the above
Answer:

Option (a)

18.
The Cipoletti notch is designed as a trapezoid with its sides sloping at 1 horizontal and
(a) 1 vertical
(b) 2 vertical
(c) 3 vertical
(d) 4 vertical
Answer:

Option (d)

19.
Euler's equation of motion for liquids is based on the assumption that the
(a) flow is streamline
(b) flow takes place continuously
(c) flow is homogeneous and incompressible
(d) flow is irrotational
Answer:

Option (c)

20.
The study of force which produces fluid motion is called as
(a) fluid kinematics
(b) fluid dynamics
(c) fluid statics
(d) none of the above
Answer:

Option (b)

Showing 11 to 20 out of 32 Questions
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