As per Newton’s law of viscosity, the shear stress for a given rate of angular deformation of fluid is proportional to (where, μ = fluid viscosity) ?
A. 1/μ
B. μ
C. μ2
D. 1/μ2
Fluid Mechanics for Chemical
Which of the following equations is valid for laminar flow of a fluid through packed bed ?
Which of the following equations is valid for laminar flow of a fluid through packed bed ?
A. Fanning equation
B. Kozeny – Karman equation
C. Hagen-Poiseuille equation
D. Blake-Plummer equation
A piezometer provided in the pipe measures__________________?
A piezometer provided in the pipe measures__________________?
A. Friction factor
B. Static pressure
C. Dynamic pressure
D. None of these
Drag force on the float of a Rotameter is (where Q = flow rate of the)__________________?
Drag force on the float of a Rotameter is (where Q = flow rate of the)__________________?
A. ∝ Q
B. ∝ √Q
C. ∝ Q2
D. Constant
Toothpaste is a__________________?
Toothpaste is a__________________?
A. Bingham plastic
B. Pseudo-plastic
C. Newtonian liquid
D. Dilatent
In a dry packed bed, the pressure drop will be changed by increasing the flow rate as__________________?
In a dry packed bed, the pressure drop will be changed by increasing the flow rate as__________________?
A. V1.8
B. V-0.8
C. V
D. V-1
Pick out the correct statement pertaining to transition/ entrance length in fluid flow ?
Pick out the correct statement pertaining to transition/ entrance length in fluid flow ?
A. The length of entrance region of pipe, in which full development of fluid flow takes place
such that velocity profile does not change downstream, is called the transition length
B. Transition length for laminar flow of Newtonian fluids in a pipe of diameter ‘d’ is equal to
0.05. D.NRe
C. Transition length for turbulent flow of Newtonian fluids in a smooth pipe of diameter ‘d’ is
equal to 50 D
D. All A., B. and C.
Which law/principle of solid mechanics is similar/equivalent to Newton’s law of viscosity in fluid mechanics ?
Which law/principle of solid mechanics is similar/equivalent to Newton’s law of viscosity in fluid mechanics ?
A. Archimedes principle
B. Newton’s second law of motion
C. Hooke’s law
D. Newton’s third law of motion
Which of the following is used for very accurate measurement of flow of gas at low velocity ?
Which of the following is used for very accurate measurement of flow of gas at low velocity ?
A. Pitot tube
B. Rotameter
C. Segmental orificemeter
D. Hot wire anemometer
The speed of a sound wave in a gas is analogous to the speed of ______________________?
The speed of a sound wave in a gas is analogous to the speed of ______________________?
A. An elementary wave in an open channel
B. Flow in an open channel
C. A disturbance travelling upstream in moving fluid
D. None of these