Mechanics of Fluids MCQ (Multiple Choice Questions) PDF Download

Bernoulli's principle states that, for streamline motion of an incompressible non-viscous fluid:

1. the pressure at any part + the kinetic energy per unit volume = constant
2. the kinetic energy per unit volume + the potential energy per unit volume = constant
3. the pressure at any part + the potential energy per unit volume = constant
4. the pressure at any part + the kinetic energy per unit volume + the potential energy per unit volume = constant

Density of air is

1. 1⁄8 of water
2. 1⁄7 of water
3. 1⁄45 of water
4. 1⁄800 of water

1 torr is equal to

1. 1 N⁄m²
2. 1 mm Hg
3. 1 bar
4. All of the above

"Upthrust = Weight of the liquid displaced" is known as

1. Bernoulli's Principle
2. Archimedes' Principle
3. Pascal's Law
4. Coulomb's law

Bernoulli's principle shows that, at points in a moving fluid where the potential energy change is very small

1. the pressure is low where the velocity is low and similarly, the pressure is high where the velocity is high
2. the pressure is low where the velocity is high and conversely, the pressure is high where the velocity is low
3. pressure becomes independent of the velocity of the moving fluid
4. pressure remain independent of the speed of the stationary fluid