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GATE CE 2019 Fluid Mechanics Revision Quiz 2 (App update required to attempt this test)
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Question 1
A ship's model of scale 1 : 100 had a wave resistance of 1 kg at its design speed. The corresponding wave resistance in prototype will be
Question 2
A fluid is flowing is through a circular pipe. For flow to be laminar the friction factor (10-3) for the pipe flow can be
Question 3
Consider the following statements
1) Streamlines are the time averaged of the direction of the fluid motion throughout the flow field.
2) Partial derivative of the stream function with respect to any direction gives the velocity component in that direction.
3) Streakline and pathline are flow patterns that have some age and thus a time history associated with them.
4) Pathlines are the time-exposed flow path of an individual particle over some time period.
which combination of the above statements is true?
1) Streamlines are the time averaged of the direction of the fluid motion throughout the flow field.
2) Partial derivative of the stream function with respect to any direction gives the velocity component in that direction.
3) Streakline and pathline are flow patterns that have some age and thus a time history associated with them.
4) Pathlines are the time-exposed flow path of an individual particle over some time period.
which combination of the above statements is true?
Question 4
Water flows through a pipe of diameter 20cm and length 50m when one end of the pipe is connected to a tank and other end of the pipe is open to the atmosphere. The pipe is horizontal and the height of water in the tank is 4m above the center of the pipe. Considering all minor losses determine the total energy at the inlet of the pipe. Take f= 0.036.
Question 5
Consider the following statements. Which of the following statements are CORRECT?
A) A flow net is applicable to irrotational fluid flow.
B) For a given boundary, a flow net is applicable to one chosen direction of flow; if the flow is reversed the flow net will change.
C) A flow net is so constructed that the size of the mesh is inversely proportional to the local velocity.
D) For a given boundary, a flow net is the same whether the flow is in one direction or the other.
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Aug 20ESE & GATE CE
