Related Questions

For one dimensional flow of an incompressible fluid in unsteady state in x-direction, the continuity equation is given by
A $$\frac{{\partial {\text{u}}}}{{\partial {\text{x}}}} = 0$$
B $$\frac{{\partial \left( {\rho {\text{u}}} \right)}}{{\partial {\text{x}}}} = 0$$
C $$\frac{{\partial {\text{u}}}}{{\partial {\text{x}}}} = - \frac{{\partial \rho }}{{\partial {\text{t}}}}$$
D $$\frac{{\partial \rho }}{{\partial {\text{t}}}} = 0$$
Unsteady state heat conduction occurs, when
A Temperature distribution is independent of time
B Temperature distribution is dependent on time
C Heat flows in one direction only
D Three dimensional heat flow is concerned
An example of unsteady non uniform flow is the flow of liquid under pressure through a
A Tapering pipe at constant flow rate
B Tapering pipe at either decreasing or increasing flow rate
C Long pipeline of constant diameter
D None of these
The component of acceleration resulting due to unsteady nature of flow is called __________ acceleration.
A Normal
B Local
C Convective
D Tangential
Unsteady uniform flow is represented by flow through a/an
A Long pipe at constant rate
B Long pipe at decreasing rate
C Expanding tube at increasing rate
D Expanding tube at constant rate
Unsteady non-uniform flow is represented by flow through a/an
A Long pipe at constant rate
B Long pipe at decreasing rate
C Expanding tube at increasing rate
D Expanding tube at constant rate
Chemical potential (an intensive property) of a substance is a force that drives the chemical system to equilibrium and is equal to its partial molar properties. The reatio of chemical potential to free energy of a pure substance at oconstant temperature and pressure is
A 0
B 1
C ∞
D None of these
'Utilities' in a chemical process plant includes compressed air, steam, water, electrical power, oxygen, acetylene, fuel gases etc. Utility costs for ordinary chemical process plants ranges roughly from __________ percent of the total product cost.
A 1 to 5
B 10 to 20
C 25 to 35
D 35 to 45
A survey was conducted among the students of Khulna University to find out how many forms of physical exercise usually swam, 25% said they usually did jogging, 20% said they played cricket, 15% said they usually played football and 20 respondents said they did not take any form of exercise. From the above findings it can be concluded that.
A The student of khulna University do not usually take physical exercise.
B No respondent took more than one form of exercise.
C The method of data collection was not valid.
D Some of the respondents took more than one form of exercise.
The economic life of a large chemical process plant as compared to a small chemical plant is
A Only slightly more
B Much more
C Slightly less
D Almost equal

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