Fundamental momentum equation for a hydraulic jump, is

A $${\text{D}}_1^2 - {\text{D}}_2^2 = \frac{{2{\text{q}}}}{{\text{g}}}\left( {{{\text{V}}_1} - {{\text{V}}_2}} \right)$$
B $${\text{D}}_2^2 - {\text{D}}_1^2 = \frac{{2{\text{q}}}}{{\text{g}}}\left( {{{\text{V}}_1} - {{\text{V}}_2}} \right)$$
C $${\text{D}}_1^2 - {\text{D}}_2^2 = \frac{{2{\text{q}}}}{{\text{g}}}\left( {{{\text{V}}_2} - {{\text{V}}_1}} \right)$$
D $${\text{D}}_1^2 + {\text{D}}_2^2 = \frac{{2{\text{q}}}}{{\text{g}}}\left( {{{\text{V}}_2} - {{\text{V}}_1}} \right)$$

Correct Answer: $${\text{D}}_2^2 - {\text{D}}_1^2 = \frac{{2{\text{q}}}}{{\text{g}}}\left( {{{\text{V}}_1} - {{\text{V}}_2}} \right)$$

Bissoy MCQ
#Civil Engineering #Irrigation Engineering

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একজন অ্যাথলেট পৃথিবীতে দীর্ঘ লাফ দিয়ে সর্বোচ্চ 4 m দূরত্ব যেতে পারেন। এই অ্যাথলেট চাঁদের পৃষ্ঠে দীর্ঘ লাফ দিয়ে সর্বোচ্চ কত দূর যেতে পারবেন ? [পৃথিবীর ভর ও ব্যাসার্ধ চাঁদের ভর ও ব্যাসার্ধের যথাক্রমে 81 গুণ ও 4 গুণ] (An athlete can cross a maximum distance 4 m by a long jump on earth surface. What is the maximum distance the athlete can cross by a long jump on moon's surface? [The mass and radius of earth are 81 times and 4 times of moon's mass and radius, respectively.])
A 0.79m
B 9 m
C 20.25 m
D 16 m
E 32.35 m
A hydraulic jump is generally formed when a stream moving with
A A hyper-critical velocity meets a stream moving with a critical velocity
B A hyper-critical velocity meets a stream moving with a hyper-critical velocity
C A hyper-critical velocity meets a stream moving with a sub-critical velocity
D A sub-critical velocity meets a stream moving with a hyper-critical velocity
In open channel flow in a rectangular channel, the ratio between the critical depth and the initial depth, when a hydraulic jump occurs is
A 0.5
B 0.84
C 1.84
D 1.25
What is the change in the angular momentum of a system as per the Law of Conservation of Angular momentum, if the total external torque acting is zero?
A Remains constant
B Becomes zero
C Increases exponentially
D None of the above
The most economical section of a rectangular channel is one which has hydraulic mean depth or hydraulic radius equal to
A Half the depth
B Half the breadth
C Twice the depth
D Twice the breadth
The hydraulic mean depth or the hydraulic radius is the ratio of
A Area of flow and wetted perimeter
B Wetted perimeter and diameter of pipe
C Velocity of flow and area of flow
D None of these
If the height of the hydraulic gradient line above the floor of thickness t is h and the specific gravity of the material of the floor is G, the minimum thickness t of the floor downstream of the crest-wall, is given by the equation
A $${\text{t}} = \frac{{{\text{h}} + 1}}{{{\text{G}} + {\text{t}}}}$$
B $${\text{t}} = \frac{{{\text{h}} - 1}}{{{\text{G}} + {\text{t}}}}$$
C $${\text{t}} = \frac{{{\text{h}} - 1}}{{{\text{G}} - {\text{t}}}}$$
D $${\text{t}} = \frac{{{\text{h}} + 1}}{{\text{G}}}$$
'Jump through hoops' means-
A to do something easy and fair
B to do something laboriously
C to do something complicated
D to do something auxiliary
When Tereshkova made her first jump, she was an employee-
A In a local textile factory
B in a sewing factory
C in a kindergarten school
D in an aerospace company
What will be the step of the interpreter in a jump statement when an exception is thrown?
A The interpreter stops its work
B The interpreter throws another exception
C The interpreter jumps to the nearest enclosing exception handler
D The interpreter throws an error

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