A. constant
B. variable
C. zero
D. zero under limiting conditions
E. never zero
Related Mcqs:
- The total energy of each particle at various places in the case of perfect incompres sible fluid flowing in continuous sream________________?
D. keeps on increasing
B. keeps on decreasing
C. remains constant
D. may increase/decrease
E. unpredictable - If cohesion between molecules of a fluid is greater than adhesion between fluid and glass, then the free level of fluid in a dipped glass tube will be_________________?
A. higher than the surface of liquid
B. the same as the surface of liquid
C. lower than the surface of liquid
D. unpredictable
E. none of the above - In a forced vortex, the velocity of flow everywhere within the fluid is__________________?
A. maximum
B. minimum
C. zero
D. non-zero finite
E. unpredictable - According to Bernoulli’s equation for steady ideal fluid flow_______________?
A. principle of conservation of mass holds
B. velocity and pressure are inversely proportional
C. total energy is constant throughout
D. the energy is constant along a stream-line but may vary across streamlines
E. none of the above - Steady flow occurs when____________________?
A. the direction and magnitude of the velocity at all points are identical
B. the velocity of successive fluid par-ticles, at any point, is the same at suc-cessive periods of time
C. the magnitude and direction of the velocity do not change from point to point in the fluid
D. the fluid particles move in plane or parallel planes and the streamline pat-terns are identical in each plane
E. velocity, depth, pressure, etc. change from point to point in the fluid flow - The settling velocity of a spherical particle of diameter less than 0.1 mm as per Stock’s law, is__________________?
A. Vs = 418 (Gs – Gw) d [(3T + 70)/100]
B. Vs = 418 (Gs – Gw)d² [(3T + 70)/100]
C. Vs = 218 (Gs – Gw)d² [(3T + 70)/100]
D. Vs = 218 (Gs – Gw)d [(3T + 70)/100] - The flow in which each liquid particle has a definite path and their paths do not cross each other is called____________________?
A. one dimensional flow
B. uniform flow
C. steady flow
D. turbulent flow
E. streamline flow - The pressure at a point in a fluid will not be same in all the directions when the fluid is________________?
A. moving
B. viscous
C. viscous and static
D. inviscous and moving
E. viscous and moving - The resultant upward pressure of a fluid on a floating body is equal to the weight of the fluid displaced by the body. This definition is according to____________________?
A. Buoyancy
B. Equilibrium of a floating body
C. Archimedes’ principle
D. Bernoulli’s theorem
E. Metacentric principle - An ideal flow of any fluid must satisfy ___________________?
A. Pascal law
B. Newton’s law of viscosity
C. boundary layer theory
D. continuity equation
E. Bernoulli’s theorem
