Fluid Mechanics (Chemical Perspective) – Multiple Choice Questions (MCQs)

1. 73. What is 'non-Newtonian rheology'?

   • A. The study of the deformation and flow of non-Newtonian fluids
   • B. The study of Newtonian fluids
   • C. The study of fluid statics
   • D. The study of heat transfer

2. 74. What is 'shear stress' (τ)?

   • A. Force per unit area acting parallel to a surface
   • B. Force per unit area acting perpendicular to a surface
   • C. Energy per unit mass
   • D. Volume per unit mass

3. 75. What is 'shear rate' (γ̇)?

   • A. The rate of deformation of a fluid element
   • B. The rate of fluid flow
   • C. The rate of pressure change
   • D. The rate of temperature change

4. 76. What is 'hydrostatic paradox'?

   • A. The pressure at a given depth in a static fluid is independent of the shape of the container
   • B. The pressure depends on the shape of the container
   • C. The pressure depends on the volume of the container
   • D. The pressure depends on the mass of the fluid

5. 77. What is a 'manometer' used for?

   • A. To measure pressure differences
   • B. To measure fluid flow rate
   • C. To measure fluid temperature
   • D. To measure fluid density

6. 78. What is 'Pitot-static tube'?

   • A. A device combining a Pitot tube and a static pressure tap to measure local velocity and static pressure simultaneously
   • B. A device for measuring average velocity
   • C. A device for measuring fluid density
   • D. A device for measuring fluid viscosity

7. 79. What is a 'pump casing'?

   • A. The stationary housing that encloses the impeller of a centrifugal pump
   • B. The rotating part of the pump
   • C. The motor that drives the pump
   • D. The suction pipe

8. 80. What is 'impeller' in a centrifugal pump?

   • A. The rotating component that imparts energy to the fluid
   • B. The stationary part of the pump
   • C. The motor
   • D. The discharge pipe

9. 81. What is 'priming a pump'?

   • A. The process of filling the pump casing and suction line with liquid to remove air or vapor
   • B. The process of starting the pump
   • C. The process of stopping the pump
   • D. The process of cleaning the pump

10. 82. What is 'cavitation damage'?

    • A. Erosion and pitting on pump components caused by the collapse of vapor bubbles
    • B. Corrosion of pump components
    • C. Wear and tear due to friction
    • D. Damage from solid particles

11. 83. What is a 'blower'?

    • A. A device used to move large volumes of gas at relatively low pressures
    • B. A device used to move small volumes of gas at high pressures
    • C. A device used to pump liquids
    • D. A device used to generate vacuum

12. 84. What is a 'compressor'?

    • A. A device used to increase the pressure of a gas
    • B. A device used to move liquids
    • C. A device used to reduce pressure
    • D. A device used to mix gases