Related Questions

A tank is fitted with 8 pipes, some of them that fill the tank and others that are waste pipe meant to those that empty the tank can empty it in 6 hours. If all the pipes are kept open when the tank is full, it will take exactly 6 hours for the tank to empty. How many of these are these are fill pipes?
A 2
B 4
C 6
D 5
The total population of 10 countries in the Asian zone is greater than the total population of 11 countries in the European zone. What can we say if one of the countries is dropped from the Asian zone ?
A Total population of the Asian zone will still be greater than the total population of the European zone
B Total population of the European zone will be greater than the total population of the Asian zone
C Total population of both zones will be equal
D We cannot say anything conclusively
In case of hydraulically smooth pipe, the resistance to flow depends only on the Reynolds number, whereas for a hydraulically rough pipe, the resistance to flow is governed by the relative roughness. Two pipes are said to have the same hydraulic roughness, when they have equal values of
A Relative roughness
B Absolute roughness
C Friction co-efficient for flows at equal Reynold number
D All of the above
If Arif works alone he will take 20 more hours to complete a task than if he works with Babu to complete the task. If Babu work alone, he will take 5 more hours to complete the task than if he works with Arif to complete the task. What is the ratio of the time taken by Arif to than taken by Babu if each of them works alone to complete the task?
A 2 : 1
B 5 : 3
C 7 : 5
D None of these
Choose the correct synonym of "Turbulence "
A Traditionally
B Certainly
C Turmoli
D Restless
Tendency to turbulence flow is directly proportional to
A Diameter of the blood vessel
B Density of blood
C Velocity of blood flow
D Viscosity of blood
E Elasticity of vessel wall
Who has written the book 'My Frozen Turbulence in Kashmir'?
A Anees Jung
B Jagmohan
C M. J. Akbar
D Nissim Ezekiel
Baffles are provided in a shell and tube heat exchanger to increase the turbulence and velocity of the shell side fluid. Which of the following shaped baffles does not fall in the category of transverse baffle?
A Segmental baffle
B Flat plate extending across the wall
C Disk type baffle
D Helical type baffle
Noise produced by cooling fans (employed in air cooled heat exchangers or cooling tower) is mainly caused due to the turbulence created by blade passage through air. It can be reduced by use of a slower fan
A With greater number of blades
B Of increased diameter
C Both A & B
D Neither A nor B
In isotropic turbulence, the __________ are equal to each other.
A Temporal velocity components
B Mean square of velocity fluctuations in the three co-ordinate directions
C Root mean square of velocity fluctuations in the three co-ordinate directions
D None of these

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