591. Remote control valve is a __________ valve.
Gate
Butterfly
Needle
Globe
✅ The correct answer is option B.
Fluid Mechanics MCQs
592. Which of the following equations applies to the fluid flow through a packed bed for very large Reynolds number?
Fanning equation
Blake-Pllummer equation
Hagen-Poiseulle equation
Kozney-Karman equation
✅ The correct answer is option B.
593. What is the ratio of total kinetic energy of fluid passing per second to the value obtained on the basis of average velocity (for laminar flow through a circular pipe)?
0.5
1
1.5
2
✅ The correct answer is option D.
594. Hydrometer measures the specific gravity of liquids based on the principles of buoyancy. Pycnometer is used to measure the specific gravity of
Powder & grannular solids
Liquids
Low melting point semi-solids
All of the above
✅ The correct answer is option D.
595. Piezometric head is the sum of the __________ heads.
Elevation & kinetic energy
Elevation & pressure
Kinetic energy & pressure
None of these
✅ The correct answer is option B.
596. The velocity distribution in direction normal to the direction of flow in plane Poiseuille flow is
Hyperbolic
Parabolic
Linear
None of these
✅ The correct answer is option B.
597. Brownian movement is prominent in the particle size range of __________ microns in case of settling of a particle in a fluid.
2 to 3
0.01 to 0.10
200 to 300
100 to 1000
✅ The correct answer is option A.
598. Laminar flow of a Newtonion fluid ceases to exist, when the Reynolds number exceeds
4000
2100
1500
3000
✅ The correct answer is option B.
599. Steady fluid flow occurs, when the derivative of flow variables satisfy the following condition.
∂/∂s = 0
∂/∂t = 0
∂/∂s = constant
∂/∂t = constant
✅ The correct answer is option B.
600. Nominal size of a pipe is an indication of its __________ diameter.
Inner
Outer
Approximate
None of these
✅ The correct answer is option C.